#authentic fossil bivalve

[uk-fossils]

Crepidula Fossil Bivalve – Lower Miocene, Clallam Formation, Washington USA, Genuine Specimen

A genuine and well-preserved Crepidula fossil bivalve from the Lower Miocene epoch, approximately 16–20 million years old. This fossil was discovered in the Clallam Formation of Northwestern Washington, USA, an important geological unit known for preserving a diverse assemblage of marine molluscs.

The genus Crepidula, commonly known as slipper shells, is a marine gastropod mollusc (often mistaken for a bivalve due to its shell shape) with a distinctive internal shelf structure. This specimen reflects the shallow marine environments of the early Miocene in the Pacific Northwest.

Fossil Type: Gastropod (commonly called a slipper shell, not a true bivalve)

Genus: Crepidula

Geological Age: Lower Miocene (approx. 16–20 million years ago)

Formation: Clallam Formation

Depositional Environment: The Clallam Formation was deposited in a shallow, warm marine setting with good water circulation, supporting abundant marine life. The sediments include sandstone and siltstone beds that preserved mollusc shells in fine detail.

Morphological Features:

Convex outer shell with a smooth to slightly ridged surface

Internal “shelf” typical of Crepidula species visible in some specimens

Preservation may include original shell material or internal moulds

Notable:

Authentic specimen from the Clallam Formation, Washington State

A well-known genus with evolutionary and ecological interest

Ideal for fossil collectors, educators, and marine paleontology enthusiasts

Actual item shown – photo depicts the exact specimen you will receive

Authenticity: All of our fossils are 100% genuine natural specimens and come with a Certificate of Authenticity. The photo includes a 1cm scale cube for reference – please view the image for accurate sizing.

Add this genuine Crepidula fossil to your collection – a classic marine mollusc from the Lower Miocene seas of the Pacific Northwest, showcasing a beautifully preserved snapshot of ancient ocean life.

[carnegiemuseumnaturalhistory]

A Journey to France to Uncover the Mysteries of the Carnegie’s Grand Staircase

The Carnegie Institute has been in existence for 125 years and is one of the greatest architectural buildings ever designed in Pittsburgh. In 1985, Carnegie Institute President Robert Wilburn invited Dr. Cynthia R. Field, the Smithsonian’s Architecture Historian, to assess the artistic value of the museum. He asked, “what do you think is the most valuable specimen or painting in the museum?” She said, “The Building Itself is the Greatest Object of the entire Museum Collection” (Fig. 1).

Fig. 1: Carnegie plaque

The internationally-famous architect, I.M. Pei, who designed the Louvre’s glass pyramid that sits in the Louvre’s central courtyard in Paris, France, opined, “Architecture is the very mirror of life. You only have to cast your eyes on buildings to feel the presence of the past, the spirit of a place; they are the reflection of society.” In 2018, Architecture Digest ranked the Carnegie’s Grand Staircase the 8th best museum staircase in the world. The Grand Staircase was built by the Pittsburgh architectural firm of Alden and Harlow at the apex of America’s Gilded-Age building boom. During my research, I discovered that the architects employed multicolored classic marbles and fossil limestones in the interior design from Algeria, Croatia, Greece, France, Ireland, Italy, and the United States. The commission to build the Grand Staircase in 1907 incorporated two classical French fossil limestones in the columns and pillars, floor tiles, steps, walls, balconies, and water fountains. This monumental Beaux-Arts style staircase is modeled after the L‘Opéra Garnier ‛a Paris, Grand Staircase in France, c. 1875, and was visited by a French Delegation with Andrew Carnegie (Fig. 2). The architecture described as Beaux-Arts was taught at the École des Beaux-Arts in Paris, from the mid-19th century until 1900. It drew upon the principles of French neoclassicism and used modern building materials, i.e., iron and glass. And as such, it became a preferred architectural style in the United States from 1895 until 1910 in cities such as, Boston, Chicago, New York City, Pittsburgh, and Washington D.C.

Fig. 2: French delegation and Andrew Carnegie

In 2019, The Carnegie’s Grand Staircase and Music Hall Foyer were recognized in the book La pierre de l’Échaillon Une histoire locale, une renommée international for the use of Échaillon jaune (yellow) ornamental stone in the museum’s columns, pillars, and walls (Fig. 3). This book was published by S.P.I.A. (Sauvegarde du Partrimoine Industriel d’Autrefois, a historical society founded by Jean Paul Rey, president) (Fig. 4).  In the book, they describe how a small French village of l’Échaillon, pronounced Esh-ee-own, received recognition for its white marble (a limestone) used by famous French architects in 64 classic buildings and sculptures from 1875 to the early 20th century (Fig. 5).  I first met Jean Paul in October of 2016, when I was invited to give a presentation at an S.P.I.A. meeting on my research on the Carnegie’s l’Échaillon.  The meeting was held in an old schoolhouse in the village of Saint-Quentin-sur-Isère, Département de Isère, in southeast France.

Fig. 3: The Grand Staircase

Fig. 4: Jean Paul Rey and Albert D. Kollar

Fig. 5: Book cover

The French Limestones in the Carnegie’s Architecture

The Carnegie building stones research project progressed significantly, once we obtained the digital images of the architect’s blueprints from the Carnegie Museum of Art’s Architecture Department. With the assistance of my co-authors, Rich Fedosick and Kay Hughes of the Section of Invertebrate Paleontology, we examined the blueprints to understand the architects Marble Index terminology (Fig. 6). Eventually, we were able to interpret and recognize the location of the two French limestones based on the Marble Index letters, E for Échaillon and H for Hauteville. From a nonscientific perspective, the architects considered the Carnegie’s interior stones to be marbles. However, the geological definition of a marble is when a rock defined as a limestone or dolomite is subjected to high heat and pressure from geologic forces forms a metamorphic rock.  The six stones listed in the Marble Index as marbles, are limestones, a sedimentary rock enriched with fossil seashells. The characteristic rudist fossils and yellow color that distinguish the Échaillon stone are found in the 18 pillars and the 22 columns that rise 3.8 meters or 12.5 feet about the Grand Staircase, and in the walls of the Music Hall Foyer (Fig. 7).

Fig. 6: Marble index E and H letters

Fig. 7: Échaillon fossils

The other French limestone used in the Carnegie is Hauteville. This limestone was quarried from the Plateau d’Hauteville in the Ain Department, in eastern France. I visited this quarry in 2016 to investigate the geology of the quarry operation, to uncover evidence of the common fossil snail Nerinea in the quarry rock (Fig. 8), and to learn more about the cultural history of the region (Fig. 9).  The Hauteville limestone was used in the Grand Staircase walls, balcony features, water fountains, vestibule steps, and as floor tiles. Other locations include, the Hall of Sculpture and Hall of Architecture floors, the walls along the grand hallway, the Music Hall vestibule floor, the Founder’s Room vestibule floor, the floor and steps in the Smoking Room (now offices), the Forbes Avenue vestibule entrances to the music hall, carriage drive, and museum and fine arts. Moreover, the Hauteville floor tiles are distributed throughout the Carnegie Library of Pittsburgh main entrance corridors. The Hauteville stone is beige in color and contains many visible fossils, none more distinctive than the robust Nerinea, a 12.7 cm/5-inch-long snail that serves as the index fossil for the limestone identification (Fig. 10).

Fig. 8: Hauteville Quarry fossil snail

Fig. 9: Hauteville directional signs

Fig. 10: Nerinea snail in Carnegie floor

Introduction to the l’Échaillon Carrières

There are three carrières or quarries in the Vercors cliffs located in the Isère River Valley that were excavated for White Echaillon or “Echaillon blanc,” Yellow Echaillon or “Echaillon jaune,” and Pink Echaillon or “Echaillon rose” during the 19th and early 20th century (Fig. 11).  These unique color combinations became popular for various interior and exterior architecture features in 194 buildings in western Europe, North Africa, and the United States. In 2016, Jean Paul Rey and members of S.P.I.A. led me on a field trip to the abandoned classic l’Échaillon white quarries (Fig. 12). We explored what is thought to be a 2,000-year-old Roman quarry and walked through a maze of underground caverns and narrow tunnels that contained abandoned mining equipment.  The other two Echaillon carrières are located several kilometers south in the small villages of Lignet, where the Pink Echaillon was quarried (Fig. 13) and Rovon, where the Yellow Echaillon was excavated (Fig. 14).

Fig. 11: Echaillon quarries locations, S.P.I.A.

Fig. 12: Visit to Echaillon

Fig. 13: Lignet Quarry Marker

Fig. 14: Rovon quarry

Cularo, Grenoble, and the white l’Echaillon stone

A fortuitous discovery was made by S.P.I.A. for their book while searching for evidence of the white l’Echaillon in the Gallo-Romans era 4th century Cularo or Grenoble, France today. In the Saint Laurent crypt that is preserved many meters below the modern-day street level tramway, a white capitol on top of a white limestone column was identified as l’Echaillon. This white capitol stone is presumably from the Roman quarry adjacent to the white l’Echaillon underground caverns. When Emperor Gratian ruled the Roman Empire from 367 to 383 A.D., he renamed Cularo after himself. Cularo thus became Gratianopolis, which through a later phonetic shift became Graignovol and then Grenoble. Although hard to find among the narrow streets and passageways of Grenoble, is a section of a Roman wall that once encircled Cularo, a portion of which is protected by a fence. This historic wall can be seen at Passage Sainte-Claire on the corner of Rue Lafayette, in the central city of Grenoble (Fig. 15). I suspect some of the white cobbles embedded in the wall may have their origin from the white l’Echaillon Roman quarry. Undoubtedly, more research will be necessary to make an affirmative conclusion.

Fig. 15: Roman wall

“Geology of the l’Échaillon Carrières”

The drawing of a new geologic map on the l’Echaillon carrières by Professor Thierry Dumont of the Université Grenoble-Alpes, confirms stratigraphically, the ages of the three limestone quarries. Among the three, the white Echaillon limestone is late Jurassic in age, whereas the pink Lignet and yellow Rovon limestones are early Cretaceous in age. The formal geologic name for the rose and yellow limestones is the Urgonian Formation. Fossils are abundant in the three limestones. Dr. Claudie Durand of Le musèum d’Histoire naturelle de Grenoble (Fig. 16) curated a diverse collection of 163 species of invertebrate fossils from l’Echaillon first published in 1919. Geologically, the three limestones were deposited in the tropical Tethys Seaway a circum-equatorial ocean of the Mesozoic Era. The strata form the Vercors carbonate platform, a buildup of late Mesozoic rudist (bivalve mollusk) reefs spanning 25 million years of evolution from (late Jurassic 140 million years ago to early Cretaceous 165 million years ago) (Fig. 17).  

Fig. 16: Dr. Claudie Durand

Fig. 17: Rudist (bivalve) reef fossils

The Rovon carrière provenance and fossils

The primary goal of this research is to define the geology and authenticate the specific provenance of all marbles, fossil limestones, sandstones, and the singular igneous granite rock used in the Carnegie building. The search for the provenance of the Carnegie’s yellow Echaillon was initiated in December of 2017 by Jean Paul Rey, when we were introduced to the Forman of the modern-day Rovon quarry. After a long discussion about our objectives, he granted permission to visit the old quarry. As darkness fell, we met with a local farmer who directed us to the quarry location in the Vercors cliffs that rise some 538 meters above his snow-covered field (Fig. 18).  

Fig. 18: Verors cliffs and old Rovon quarry

In October of 2018, the S.P.I.A. team pre-arranged to have several 4-wheel trucks transport ten people including Professor Fabienne Giraud-Guillot of the Université Grenoble-Alpes to the Rovon quarry. We ascended the long steep road that ended some 500 m from the main quarry. Surprisingly, the quarry was filled with massive limestone boulders that were cut by mechanical wire saws from the cliff rock (Fig. 19). Such large boulders make it virtually impossible to break with small hammers. For actual fossil collecting purposes, it is better to search for smaller size rocks to break apart (Fig. 20). This past October, transport to the Rovon quarry riding in a 55-year-old Russian built farm tractor was a treat (Fig. 21). And the fossil collecting was a success with 21 complete specimens collected for the museum of the diagnostic Caprina rudist bivalve clam (Fig. 22). The shape of these fossils closely resembles the fossils preserved in the Echaillon limestone in the Grand Staircase and Music Hall Foyer. Additional geologic data is being reviewed by colleagues from the Geology Department at the University of Zagreb in Croatia and the University of Ireland at Galway.  

Fig. 19: S.P.I.A. team

Fig. 20: Collecting fossils

Fig. 21: Russian tractor

Fig. 22: Caprina rudist clam

“Carnegie’s Grand Staircase in the 21st Century”

A study published this month by the BMJ, formerly The British Medical Journal, suggested that “when people of all ages participate in the arts and visit museums once a month or even every few months, they are likely to be more engaged in the world and may actually live longer.” Years ago, the Oscar winner actor Russell Crowe was in Pittsburgh, and he was asked what he did on his days off. In reply, he said, “I ride my bicycle to look at buildings and the architecture of the city.” I. M. Pei states, “Architecture brings people together.” I agree.

Maybe it’s time to reconsider how the Carnegie’s Grand Staircase is promoted to the public at large. For instance, the current arrangement of the free-standing dioramas situated on the first floor, awkwardly impede the flow of patrons walking among the pillars, columns, and the taking of photographs of the Grand Staircase.  Moreover, the placement of these dioramas detracts from the visual enjoyment of the famous John White Alexander multicolor murals. An artistic feature of the murals is their connection to the stone colors to enhance the first and second floors architectural features. The best vantage points to see this fabulous spectrum of color is from the third-floor balcony looking down to the first and second floors.

The Carnegie Museum of Art (Museum of Fine Arts) will be celebrating its 125th Anniversary in the fall of 2020. The Grand Staircase was designed as the showcase entrance to the Museum of Fine Arts for Pittsburghers of the early 20th Century. One hundred and twenty-five years later, perhaps, this world-class space can once again establish a new generation of museum patrons and become the destination as a place to be for its cultural and intellectual heritage.  And don’t forget, this staircase can be an Instagram-worthy site for a family portrait to encourage our younger audiences to visit too.

Albert D. Kollar is the Collection Manager in the Section of Invertebrate Paleontology at Carnegie Museum of Natural History. Museum employees are encouraged to blog about their unique experiences and knowledge gained from working at the museum.

[uk-fossils]

Oppelia subradiata Ammonite Bivalves Belemnite Multi Fossil Block Jurassic Dorset COA

A fascinating multi-fossil block featuring a beautifully preserved Oppelia subradiata ammonite, accompanied by bivalves and a belemnite, discovered by our own team members Alister and Alison on 30 April 2025 at Burton Bradstock, part of the iconic Jurassic Coast in Dorset, UK.

This specimen originates from the Inferior Oolite Formation, a Middle Jurassic unit known for its fossil-rich marine sediments. Oppelia subradiata is a slender, evolute ammonite with fine ribbing and a compressed shell. It belongs to:

Order: Ammonitida

Superfamily: Haploceratoidea

Family: Oppeliidae

Zone: Often associated with the Garantiana Zone

Geological Stage: Bajocian (~170 million years ago)

Depositional Environment: Shallow marine oolitic shelf, warm carbonate-rich seas

This block is a wonderful representation of Jurassic marine life, combining different fossil groups in a single matrix, offering a mini paleo-ecosystem snapshot.

It has been expertly cleaned, prepped and treated by Alison. The photo in this listing shows the exact specimen you will receive, and includes a 1cm scale cube for size reference. Please refer to the images for full dimensions.

We guarantee the provenance and authenticity of all our fossils. All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity (COA).

Perfect for collectors, educational use, or display, this multi-fossil block is both scientifically significant and visually striking.

Origin: Burton Bradstock, Dorset, United Kingdom

Formation: Inferior Oolite

Age: Bajocian Stage, Middle Jurassic (~170 Ma)

Species: Oppelia subradiata + bivalves + belemnite

Discovered by: Alister and Alison (30 April 2025)

Prepared by: Alison

Authenticity: 100% Genuine Fossil with COA

[uk-fossils]

Polished Fossil Bivalve | Lower Cretaceous Madagascar | Genuine Specimen with COA

Add a polished piece of prehistoric marine life to your collection with this exquisite Fossil Bivalve from the Lower Cretaceous period, discovered in Madagascar. Carefully polished to enhance its natural beauty, this specimen is a unique example of ancient marine molluscs and a stunning addition to any fossil or natural history collection.

Fossil Type: Bivalve Mollusc

Geological Period: Lower Cretaceous (~145 to 100 million years ago)

Location: Madagascar

Scale Rule: Squares/Cube = 1cm (Please see photo for full sizing details)

Specimen: The photo shows the exact item you will receive

Authenticity: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity

Geological and Paleontological Information

This fossil bivalve originates from marine deposits formed during the Lower Cretaceous, a time when Madagascar was part of the southern supercontinent Gondwana. These ancient seas supported a diverse array of molluscs, including bivalves like this example. While the exact genus and species are not specified, bivalves from this region and period are often linked to families such as Trigoniidae, Inoceramidae, or Ostreidae, common in Cretaceous marine strata.

Phylum: Mollusca

Class: Bivalvia

Morphological Features: Typically two symmetrical shells joined by a hinge; this specimen is polished to reveal structural details such as growth lines, shell ridges, and colour banding within the mineralised shell

Depositional Environment: Shallow marine environment with fine-grained sediment, conducive to fossilisation of shell-bearing organisms

Geological Stage: Likely from the Barremian to Aptian stages of the Early Cretaceous (specific stratigraphy not provided)

Notable Aspects

Polished fossil bivalves from Madagascar are prized for their excellent preservation and the stunning patterns that emerge when polished. These fossils represent not only a window into marine life over 100 million years ago but also the geological history of Madagascar's evolving sedimentary basins.

Why Buy From Us?

100% genuine fossil guaranteed with Certificate of Authenticity

Polished for display, study, or gifting

Carefully sourced and curated specimen

Actual item shown in photographs

Own a beautifully preserved piece of natural history today with this authentic polished fossil bivalve from the Lower Cretaceous of Madagascar — a true relic of Earth’s ancient oceans.

[uk-fossils]

Fossil Pectin Shell – Eocene Epoch, Clallam Bay Washington USA, Genuine Bivalve Specimen

A well-preserved Fossil Pectin Shell (scallop) from the Eocene Epoch, approximately 40–50 million years old. This specimen was collected from the Clallam Formation near Clallam Bay, Washington State, USA, a site known for producing beautifully preserved marine invertebrate fossils from the early Paleogene period.

Pectin shells belong to the family Pectinidae, a group of marine bivalves distinguished by their fan-shaped, radially ribbed shells. This fossil showcases the elegant symmetry and surface ribbing typical of this family, preserved in fine-grained sediment.

Fossil Type: Bivalve (Scallop) Shell

Geological Age: Eocene – Ypresian to Lutetian Stages

Formation: Clallam Formation

Depositional Environment: The Clallam Formation was deposited in a shallow marine environment along a continental shelf. Calm conditions and fine silts contributed to the exceptional preservation of molluscs, echinoderms, and other invertebrates in the fossil record.

Morphological Features:

Distinct fan-shaped shell outline

Radiating ribs across the surface

Some specimens retain hinge or growth lines

Notable:

Classic marine invertebrate from the Eocene of the Pacific Northwest

Ideal for educational displays, fossil collectors, or palaeontology enthusiasts

The photograph shows the exact item offered for sale

Authenticity: All of our fossils are 100% genuine natural specimens and come with a Certificate of Authenticity. Please refer to the scale image for exact size – each square or cube equals 1cm.

This Eocene Pectin shell from Clallam Bay offers a glimpse into the marine ecosystems of ancient Washington. A beautiful and scientifically valuable specimen for any fossil enthusiast.

[uk-fossils]

Calpitaria sp. Fossil Bivalve - Bracklesham Beds, Eocene, UK | Genuine Specimen + COA

Calpitaria sp. Fossil Bivalve – Bracklesham Beds, Eocene Epoch

Discover a genuine piece of natural history with this Calpitaria sp. fossil bivalve, carefully extracted from the Bracklesham Beds, dating back to the Eocene Epoch. This remarkable fossil was found in Lee-on-Solent, Hampshire, UK, and is a stunning addition to any fossil collection.

Authenticity Guaranteed: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity for your peace of mind. The fossil shown in the images is the exact specimen you will receive.

Origin & Preparation:

Location: Lee-on-Solent, Hampshire, UK

Geological Formation: Bracklesham Beds

Age: Eocene Epoch (~56–33.9 million years ago)

Discovery Date: 08 March 2025

Discovered By: Our expert team members, Alister and Alison

Preparation: Cleaned, prepped, and treated by Alison to enhance preservation and visibility of fossilized details

Sizing & Presentation:

Scale cube in the photo = 1cm for reference

For full dimensions, please refer to the provided images

Perfect for: ✔ Fossil Collectors ✔ Educational Use ✔ Gifts for Paleontology Enthusiasts ✔ Museum Displays ✔ Natural History Lovers

Own a unique piece of ancient marine history and bring a touch of prehistoric life into your collection today! Fast & Secure Shipping Available.

[uk-fossils]

Pleuromya costata Fossil Bivalve - Lower Lias, Jurassic, Gloucestershire, UK - Genuine Prehistoric Fossil

This is a genuine fossil specimen of Pleuromya costata, an extinct species of bivalve, discovered in the Lower Lias deposits of Gloucestershire, UK. Dating back to the Early Jurassic period (~200-180 million years ago), this bivalve lived in shallow marine environments that were rich in prehistoric marine life, including ammonites, belemnites, and early marine reptiles.

The fossil is well-preserved, showcasing the characteristic elongated shape and ribbed shell structure of Pleuromya costata. Fossils from the Lower Lias Formation provide vital insights into the marine biodiversity and sedimentary environments of the Jurassic period.

Key Features:

Species: Pleuromya costata (Prehistoric Bivalve)

Fossil Type: Bivalve Shell

Age: Early Jurassic (~200-180 million years old)

Formation: Lower Lias

Location: Gloucestershire, UK

Condition: Well-preserved, showcasing detailed shell structure and surface features

Authenticity: 100% genuine fossil, supplied with a Certificate of Authenticity

Photo: The item in the listing is the exact specimen you will receive

Pleuromya costata was a filter-feeding bivalve that thrived in Jurassic seas, playing an important role in ancient marine ecosystems. These fossils are highly collectible due to their scientific significance and their connection to the diverse marine life of the Jurassic period.

This fossil is an excellent addition to any fossil collection, natural history display, or educational exhibit. It also makes a fantastic gift for fossil enthusiasts, geologists, and those fascinated by prehistoric marine environments.

Additional Information:

Scale cube = 1cm for size reference. Please see listing photos for full dimensions.

This is a carefully selected, high-quality specimen.

Ships securely packaged to ensure safe arrival.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity

Fast & Secure Shipping – We take great care in packaging each fossil to ensure it arrives in perfect condition!

Own a rare and scientifically significant piece of prehistoric history – add this Pleuromya costata Fossil Bivalve from the Jurassic, Gloucestershire, UK to your collection today!

[uk-fossils]

Astarte obliqua Fossil Bivalve | Bajocian | Jurassic | Somerset, UK | Genuine Specimen w/ COA

Own a fascinating piece of Jurassic marine history with this Astarte obliqua fossil bivalve, dating back to the Bajocian stage of the Jurassic period (approximately 170 - 168 million years ago) from Somerset, UK. This well-preserved fossil captures the structure of an ancient bivalve that once thrived in warm, shallow seas.

Fossil Details:

Species: Astarte obliqua (extinct bivalve mollusk)

Fossil Type: Bivalve Shell

Age: Bajocian Stage, Jurassic (approx. 170 - 168 million years old)

Origin: Somerset, UK

Authenticity: 100% Genuine Fossil - Comes with a Certificate of Authenticity

About Astarte obliqua & Its Environment:

Astarte obliqua was a filter-feeding bivalve that lived in soft marine sediments. As part of the Jurassic marine ecosystem, these mollusks contributed to the biodiversity of the ancient seafloor. The Jurassic deposits of Somerset are well known for their fossil-rich sediments, preserving a wide variety of marine life from the Middle Jurassic period.

Why Choose This Fossil?

Carefully selected authentic specimen—you will receive the exact fossil shown in the photos.

A great addition to any fossil collection, educational display, or gift for a paleontology enthusiast.

Scale rule in photos (squares/cube = 1cm) for accurate size reference.

This is a rare opportunity to own a Jurassic bivalve fossil from the fossil-rich deposits of Somerset, UK. Limited availability – add this incredible specimen to your collection today!

[uk-fossils]

Pholadomya fidicula Fossil Bivalve | Bajocian | Jurassic | Dorset Coast, UK | Genuine Specimen w/ COA

Own a fascinating piece of Jurassic marine history with this Pholadomya fidicula fossil bivalve, dating back to the Bajocian stage of the Jurassic period (approximately 170 - 168 million years ago) from the Dorset Coast, UK. This well-preserved fossil showcases the structure of an ancient bivalve that once thrived in warm, shallow seas.

Fossil Details:

Species: Pholadomya fidicula (extinct bivalve mollusk)

Fossil Type: Bivalve Shell

Age: Bajocian Stage, Jurassic (approx. 170 - 168 million years old)

Origin: Dorset Coast, UK

Authenticity: 100% Genuine Fossil - Comes with a Certificate of Authenticity

About Pholadomya fidicula & Its Environment:

Pholadomya fidicula was a burrowing bivalve that lived in soft marine sediments. As part of the Jurassic ecosystem, these mollusks played a crucial role in filtering seawater and contributing to the biodiversity of ancient shallow marine environments. The Dorset Coast is world-renowned for its Jurassic fossil deposits, offering insights into the prehistoric life that thrived in these warm, tropical seas.

Why Choose This Fossil?

Carefully selected authentic specimen—you will receive the exact fossil shown in the photos.

A fascinating addition to any fossil collection, educational display, or gift for a paleontology enthusiast.

Scale rule in photos (squares/cube = 1cm) for accurate size reference.

This is a rare opportunity to own a Jurassic bivalve fossil from the famous fossil-rich Dorset Coast. Limited availability – add this remarkable piece of natural history to your collection today!

[uk-fossils]

Pleuromya tellina Fossil Bivalve | Middle Inferior Oolite | Jurassic | Gloucestershire, UK | Genuine Specimen w/ COA

Discover an authentic piece of Jurassic marine history with this Pleuromya tellina fossil bivalve, dating back to the Middle Inferior Oolite (approximately 174 - 168 million years ago) from Gloucestershire, UK. This well-preserved fossil represents an ancient bivalve species that thrived in the shallow, warm seas of the Jurassic period.

Fossil Details:

Species: Pleuromya tellina (extinct bivalve mollusk)

Fossil Type: Bivalve Shell

Formation: Middle Inferior Oolite

Age: Jurassic (approx. 174 - 168 million years old)

Origin: Gloucestershire, UK

Authenticity: 100% Genuine Fossil - Comes with a Certificate of Authenticity

About Pleuromya tellina & Its Environment:

Pleuromya tellina was a Jurassic bivalve that inhabited shallow marine environments. As a filter feeder, it played a crucial role in the ancient ecosystem, living in sediment-rich seabeds. The Inferior Oolite Formation, where this fossil was discovered, consists of oolitic limestone deposits that formed in warm, shallow seas during the Middle Jurassic, preserving a diverse array of marine life.

Why Choose This Fossil?

Carefully selected authentic specimen—you will receive the exact fossil shown in the photos.

A fantastic addition to any fossil collection, educational display, or gift for a paleontology enthusiast.

Scale rule in photos (squares/cube = 1cm) for accurate size reference.

This rare fossilized bivalve from the Jurassic seas of the UK is a unique and valuable specimen. Limited availability – add this incredible piece of Earth’s history to your collection today!

[uk-fossils]

Double Venericardia Fossil Bivalve - Eocene, Bracklesham Beds, Sussex, UK - 100% Genuine w/ COA

Discover an incredible Double Venericardia Fossil Bivalve, a fascinating piece from the Eocene epoch, found within the renowned Bracklesham Beds at Bracklesham Bay, Sussex, UK. Dating back over 40 million years, this fossil showcases an extinct genus of marine bivalve mollusks that thrived in ancient marine environments, providing an exceptional glimpse into prehistoric ecosystems.

This particular specimen was discovered by our expert team members, Alister and Alison, on 00 January 1900, and has been carefully cleaned, prepped, and treated by Alison to ensure its remarkable preservation. The distinct ridged shell patterns characteristic of Venericardia bivalves are beautifully displayed, with both halves of the bivalve intact, making it an even rarer and more desirable piece for fossil collectors, educators, and enthusiasts of natural history.

Species: Double Venericardia Fossil Bivalve

Age: Eocene (Approximately 40-50 million years old)

Formation: Bracklesham Beds

Location: Bracklesham Bay, Sussex, UK

Authenticity: 100% genuine fossil, comes with a Certificate of Authenticity

Sizing: Scale cube = 1cm (Full dimensions available in listing photos)

ACTUAL SPECIMEN AS SEEN: The specimen shown in the listing is the exact fossil you will receive. Each piece is hand-selected and professionally photographed to ensure you receive an accurate representation of your fossil. Due to the unique nature of fossils, once this item is sold, a similar specimen with updated images and details will be listed.

Please note that some fossils may be propped up for photography purposes. While we strive to depict colors as accurately as possible, variations may occur due to lighting and screen settings.

Your fossil will be securely packaged to ensure safe worldwide delivery. Whether you are expanding your fossil collection, looking for an educational specimen, or searching for a unique gift, this rare Double Venericardia Fossil Bivalve is an excellent choice.

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[uk-fossils]

Venericardia Fossil Bivalve - Eocene, Bracklesham Beds, Sussex, UK - 100% Genuine w/ COA

Discover an incredible Venericardia Fossil Bivalve, a fascinating piece from the Eocene epoch, found within the renowned Bracklesham Beds at Bracklesham Bay, Sussex, UK. Dating back over 40 million years, this fossil showcases an extinct genus of marine bivalve mollusks that thrived in ancient marine environments, providing an exceptional glimpse into prehistoric ecosystems.

This particular specimen was discovered by our expert team members, Alister and Alison, on 00 January 1900, and has been carefully cleaned, prepped, and treated by Alison to ensure its remarkable preservation. The distinct ridged shell patterns characteristic of Venericardia bivalves are beautifully displayed, making it an ideal addition for fossil collectors, educators, and enthusiasts of natural history.

Species: Venericardia Fossil Bivalve

Age: Eocene (Approximately 40-50 million years old)

Formation: Bracklesham Beds

Location: Bracklesham Bay, Sussex, UK

Authenticity: 100% genuine fossil, comes with a Certificate of Authenticity

Sizing: Scale cube = 1cm (Full dimensions available in listing photos)

ACTUAL SPECIMEN AS SEEN: The specimen shown in the listing is the exact fossil you will receive. Each piece is hand-selected and professionally photographed to ensure you receive an accurate representation of your fossil. Due to the unique nature of fossils, once this item is sold, a similar specimen with updated images and details will be listed.

Please note that some fossils may be propped up for photography purposes. While we strive to depict colors as accurately as possible, variations may occur due to lighting and screen settings.

Your fossil will be securely packaged to ensure safe worldwide delivery. Whether you are expanding your fossil collection, looking for an educational specimen, or searching for a unique gift, this rare Venericardia Fossil Bivalve is an excellent choice.

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[uk-fossils]

Rare Cardita listeri Fossil Bivalve – Middle Lias, Lower Sinemurian, Jurassic, UK | Authentic Specimen

Rare Cardita listeri Fossil Bivalve – Lower Sinemurian Stage, Jurassic Period – Blockley, United Kingdom

This listing features a rare Cardita listeri fossil bivalve from the Lower Sinemurian stage of the Jurassic period, discovered in the Middle Lias Formation at Blockley, United Kingdom. This well-preserved specimen highlights the distinct ridged shell structure that characterizes the Cardita genus.

About Cardita listeri:

Cardita listeri is an extinct species of marine bivalve that thrived in the shallow seas during the Jurassic period. Known for its thick, robust shell with pronounced radial ribs, Cardita listeri was a burrowing filter feeder, playing a vital role in ancient marine ecosystems. Its durable shell allowed it to withstand dynamic marine conditions, making it a common find in certain fossil beds.

Geological Context:

Formation: Middle Lias

Age: Lower Sinemurian, Jurassic (~199 – 190 million years ago)

Location: Blockley, United Kingdom

The Middle Lias Formation is renowned for its rich marine fossil deposits, preserving a variety of life forms such as ammonites, belemnites, gastropods, and bivalves like Cardita listeri. The Lower Sinemurian period marks a time of abundant shallow seas, ideal for marine biodiversity.

Fossil Details:

100% Genuine Cardita listeri Fossil Bivalve

Age: Lower Sinemurian, Jurassic (~199 – 190 million years ago)

Origin: Blockley, United Kingdom

Thick, Ribbed Shell Structure with Natural Detailing

Scale Rule Squares/Cube = 1cm (Please refer to photos for full sizing)

Comes with a Certificate of Authenticity

From the prestigious Alice Purnell Collection, one of the world’s largest ammonite and marine fossil collections

Why This Specimen is Special:

Rare Jurassic Bivalve Fossil from the UK

Detailed ribbed shell in excellent preservation

Ideal for Collectors, Museums, or Educational Displays

Carefully selected for its geological and historical significance

A unique addition to any fossil or natural history collection

This Cardita listeri fossil bivalve offers a glimpse into Earth’s prehistoric marine environments and is perfect for fossil enthusiasts, educators, and collectors.

📦 Fast & Secure Shipping 🛡️ 100% Authenticity Guaranteed 💎 A Premium Collector’s Fossil Specimen

Add this remarkable piece of Jurassic marine history to your collection today!

[uk-fossils]

Rare Cardita listeri Fossil Bivalve – Middle Lias, Lower Sinemurian, Jurassic, UK | Authentic Specimen

Rare Cardita listeri Fossil Bivalve – Lower Sinemurian Stage, Jurassic Period – Blockley, United Kingdom

This listing features a rare Cardita listeri fossil bivalve from the Lower Sinemurian stage of the Jurassic period, discovered in the Middle Lias Formation at Blockley, United Kingdom. This well-preserved specimen highlights the distinct ridged shell structure that characterizes the Cardita genus.

About Cardita listeri:

Cardita listeri is an extinct species of marine bivalve that thrived in the shallow seas during the Jurassic period. Known for its thick, robust shell with pronounced radial ribs, Cardita listeri was a burrowing filter feeder, playing a vital role in ancient marine ecosystems. Its durable shell allowed it to withstand dynamic marine conditions, making it a common find in certain fossil beds.

Geological Context:

Formation: Middle Lias

Age: Lower Sinemurian, Jurassic (~199 – 190 million years ago)

Location: Blockley, United Kingdom

The Middle Lias Formation is renowned for its rich marine fossil deposits, preserving a variety of life forms such as ammonites, belemnites, gastropods, and bivalves like Cardita listeri. The Lower Sinemurian period marks a time of abundant shallow seas, ideal for marine biodiversity.

Fossil Details:

100% Genuine Cardita listeri Fossil Bivalve

Age: Lower Sinemurian, Jurassic (~199 – 190 million years ago)

Origin: Blockley, United Kingdom

Thick, Ribbed Shell Structure with Natural Detailing

Scale Rule Squares/Cube = 1cm (Please refer to photos for full sizing)

Comes with a Certificate of Authenticity

From the prestigious Alice Purnell Collection, one of the world’s largest ammonite and marine fossil collections

Why This Specimen is Special:

Rare Jurassic Bivalve Fossil from the UK

Detailed ribbed shell in excellent preservation

Ideal for Collectors, Museums, or Educational Displays

Carefully selected for its geological and historical significance

A unique addition to any fossil or natural history collection

This Cardita listeri fossil bivalve offers a glimpse into Earth’s prehistoric marine environments and is perfect for fossil enthusiasts, educators, and collectors.

📦 Fast & Secure Shipping 🛡️ 100% Authenticity Guaranteed 💎 A Premium Collector’s Fossil Specimen

Add this remarkable piece of Jurassic marine history to your collection today!

[uk-fossils]

Rare Pleuromya costata Fossil Bivalve – Middle Lias, Lower Sinemurian, Jurassic, UK | Authentic Specimen

Rare Pleuromya costata Fossil Bivalve – Lower Sinemurian Stage, Jurassic Period – Blockley, United Kingdom

This listing features a rare Pleuromya costata fossil bivalve from the Lower Sinemurian stage of the Jurassic period, discovered in the Middle Lias Formation at Blockley, United Kingdom. This well-preserved specimen showcases the distinctive ribbed shell structure characteristic of the Pleuromya genus.

About Pleuromya costata:

Pleuromya costata is an extinct species of marine bivalve that inhabited shallow seas during the Jurassic period. Recognized for its elongated, ribbed shell and streamlined form, Pleuromya costata was adapted for life partially buried in soft seafloor sediments. As a filter feeder, it played a key role in the ancient marine ecosystem.

Geological Context:

Formation: Middle Lias

Age: Lower Sinemurian, Jurassic (~199 – 190 million years ago)

Location: Blockley, United Kingdom

The Middle Lias Formation is a renowned fossil-bearing deposit, known for its rich marine life, including ammonites, belemnites, gastropods, and bivalves like Pleuromya. The Lower Sinemurian stage marks a time when shallow seas flourished with diverse marine organisms, now preserved in sedimentary rock layers.

Fossil Details:

100% Genuine Pleuromya costata Fossil Bivalve

Age: Lower Sinemurian, Jurassic (~199 – 190 million years ago)

Origin: Blockley, United Kingdom

Elongated Shell with Prominent Ribbing

Scale Rule Squares/Cube = 1cm (Please see photos for full sizing)

Comes with a Certificate of Authenticity

From the renowned Alice Purnell Collection, one of the world’s largest ammonite and marine fossil collections

Why This Specimen is Special:

Rare Jurassic Bivalve Fossil from the UK

Well-preserved ribbed shell structure

Ideal for Collectors, Museums, or Educational Displays

Carefully selected for its scientific and historical significance

A valuable addition to any fossil or natural history collection

This Pleuromya costata fossil bivalve offers a remarkable glimpse into Earth’s ancient marine ecosystems and is perfect for fossil enthusiasts, educators, and collectors.

📦 Fast & Secure Shipping 🛡️ 100% Authenticity Guaranteed 💎 A Premium Collector’s Fossil Specimen

Add this exceptional piece of Jurassic marine history to your collection today!

[uk-fossils]

Rare Pleuromya uniformis Fossil Bivalve – Middle Lias, Lower Sinemurian, Jurassic, UK | Authentic Specimen

Rare Pleuromya uniformis Fossil Bivalve – Lower Sinemurian Stage, Jurassic Period – Blockley, United Kingdom

This listing features a rare Pleuromya uniformis fossil bivalve from the Lower Sinemurian stage of the Jurassic period, found in the Middle Lias Formation at Blockley, United Kingdom. This genuine specimen showcases the elongated shell structure and fine preservation typical of the Pleuromya genus.

About Pleuromya uniformis:

Pleuromya uniformis is an extinct species of marine bivalve that thrived in shallow seas during the Jurassic period. Known for its elongated, symmetrical shell and subtle growth lines, Pleuromya was a sediment-dwelling filter feeder that played a significant role in Jurassic marine ecosystems. Its streamlined form made it well-suited for life buried within soft seafloor sediments.

Geological Context:

Formation: Middle Lias

Age: Lower Sinemurian, Jurassic (~199 – 190 million years ago)

Location: Blockley, United Kingdom

The Middle Lias Formation is renowned for its rich fossil record, preserving a variety of marine life including ammonites, belemnites, gastropods, and bivalves like Pleuromya. The Lower Sinemurian stage represents a time of extensive shallow seas, ideal for the proliferation of marine invertebrates.

Fossil Details:

100% Genuine Pleuromya uniformis Fossil Bivalve

Age: Lower Sinemurian, Jurassic (~199 – 190 million years ago)

Origin: Blockley, United Kingdom

Elongated Shell with Fine Growth Lines

Scale Rule Squares/Cube = 1cm (Please refer to photos for full sizing)

Comes with a Certificate of Authenticity

From the prestigious Alice Purnell Collection, one of the world’s largest ammonite and marine fossil collections

Why This Specimen is Special:

Rare Jurassic Bivalve Fossil from the UK

Excellent preservation showcasing natural shell features

Ideal for Collectors, Museums, or Educational Displays

Carefully selected for its scientific and historical significance

A valuable addition to any fossil or natural history collection

This Pleuromya uniformis fossil bivalve offers a fascinating glimpse into ancient marine ecosystems and is perfect for fossil enthusiasts, educators, and collectors.

📦 Fast & Secure Shipping 🛡️ 100% Authenticity Guaranteed 💎 A Premium Collector’s Fossil Specimen

Add this incredible piece of Jurassic marine history to your collection today!