#fossilised echinoid test

[uk-fossils]

CLYPEUS MULLERI Fossil Echinoid Sea Urchin Jurassic Inferior Oolite Wiltshire UK Authentic Specimen

This listing features a beautifully preserved fossil echinoid (sea urchin) of the species Clypeus mulleri, discovered in the Inferior Oolite Formation of Wiltshire, UK. This authentic Jurassic marine fossil is accompanied by a Certificate of Authenticity, and the photograph shows the actual specimen you will receive.

Clypeus mulleri is a well-known echinoid species from the Middle Jurassic and is part of the:

Order: Clypeasteroida

Family: Clypeidae

This echinoid lived during the Bajocian Stage of the Middle Jurassic Period, around 170–168 million years ago. The Inferior Oolite represents shallow marine environments, including oolitic and bioclastic limestones deposited in a warm, tropical sea.

Fossils from the oolite beds of Wiltshire are prized for their fine preservation and historical importance, with Clypeus mulleri being among the most characteristic species.

Morphological Features:

Large, rounded disc-shaped test with a slight central elevation

Petaloid ambulacra forming a five-petaled pattern on the upper surface

Fine radial symmetry with a smooth or lightly ornamented surface

Central peristome (mouth area) on the underside, typical of regular echinoids

These echinoids likely lived on or slightly buried in the sea floor, using tube feet for feeding and respiration.

Specimen Details:

Species: Clypeus mulleri

Fossil Type: Echinoid (Sea Urchin) Test

Geological Unit: Inferior Oolite Formation

Geological Age: Middle Jurassic (Bajocian Stage)

Location: Wiltshire, United Kingdom

Depositional Environment: Shallow warm marine platform (oolitic limestone)

Family: Clypeidae

This is a genuine and attractive example of a classic British Jurassic echinoid, perfect for fossil collectors, educators, or natural history enthusiasts.

Scale rule squares/cube = 1cm. Please see the photo for full sizing and details.

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

[bunny-ology]

Finally found some information on marine fossils.... Had to call and ask a marine paleontologist in Maryland

If you don't know if it is a fossil or not and it's BONE - take a lighter to it. If it smells like burning hair, it's modern. Not fossilised

However if it is NOT bone... That's hard... HCl tests are not effective. Shells are mostly made of calcium carbonate. Easiest way to tell is if it is in a *matrix or not, in a matrix means that it is fossil. Next thing, if it is highly detailed, hollow, NOT CRUSHED, then it is modern. **Echinoids especially. An uncrushed echinoid? That's not very likely to happen, if at all. Has someone already documented what it is? Is it super specific with exactly the species and genus? That's probably modern. Is that species and genus still alive today? Very very probably modern

*a matrix is the base rock. Usually some mixture of different things

** sea urchins and sea dollars fall into this category.

[uk-fossils]

British Chalk Fossil Echinoid – Echinocorys scutata elevata | Santonian Upper Chalk Foreness Point Kent UK | Genuine Specimen with COA

This listing features an authentic British Chalk fossil echinoid – Echinocorys scutata elevata, sourced from the Upper Chalk Formation of the Santonian stage in the Late Cretaceous, collected at Foreness Point, Margate, Kent, UK. This rare subspecies is recognised for its higher domed test and more elevated profile compared to other Echinocorys forms.

Fossil Type: Echinoid (Sea Urchin)

Species/Subspecies: Echinocorys scutata elevata

Geological Period: Late Cretaceous (~86.3 to 83.6 million years ago)

Geological Stage: Santonian

Formation: Upper Chalk (Chalk Group)

Location: Foreness Point, Margate, Kent, United Kingdom

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

Specimen: You will receive the exact item shown in the photos

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

Geological and Paleontological Context

Echinocorys scutata elevata is a distinctive and relatively uncommon form of echinoid from the British Upper Chalk. It lived in soft marine sediments in a calm, shallow sea during the Late Cretaceous, and its form reflects adaptations for infaunal life.

Phylum: Echinodermata

Class: Echinoidea

Order: Holasteroida

Family: Holasteridae

Genus: Echinocorys

Subspecies: scutata elevata

Depositional Environment: Quiet, carbonate-rich shallow marine shelf dominated by coccolith deposition; ideal for fossilisation of echinoids and other invertebrates

Morphological Features: More strongly domed test with a slightly narrower base, distinct ambulacral petals and well-developed oral and aboral structures; typically larger and taller than vulgaris forms

Biozone: Found within the Santonian stratigraphic intervals in association with inoceramids and foraminifera commonly used in UK chalk biostratigraphy

Notable: Echinocorys scutata elevata is prized for its morphological contrast with flatter echinoid forms and is useful in evolutionary and paleoenvironmental interpretation of Cretaceous chalk faunas

Why This Fossil Is Special

This is a beautifully preserved, A-grade example of Echinocorys scutata elevata. Its height and symmetry set it apart from more common subspecies, making it a visually striking and scientifically interesting addition to any collection.

Why Buy From Us?

100% genuine fossil with Certificate of Authenticity

You will receive the exact specimen shown in the listing photos

Ethically collected from reputable geological sites in the UK

Ideal for collectors, educators, museums, or natural history enthusiasts

Secure a rare and striking example of Britain’s Cretaceous marine fauna with this Echinocorys scutata elevata fossil echinoid from the Upper Chalk of Foreness Point, Kent—a unique relic of ancient seas dating back over 85 million years.

[uk-fossils]

British Chalk Fossil Echinoid – Echinocorys scutata vulgaris | Santonian Upper Chalk Foreness Point Kent UK | Genuine Specimen with COA

This listing features an authentic British Chalk fossil echinoid – Echinocorys scutata vulgaris, sourced from the Upper Chalk Formation of the Santonian stage in the Late Cretaceous, collected at Foreness Point, Margate, Kent, UK. This classic subspecies is a well-documented and widely distributed form of Echinocorys scutata, valued for its symmetry and robust preservation.

Fossil Type: Echinoid (Sea Urchin)

Species/Subspecies: Echinocorys scutata vulgaris

Geological Period: Late Cretaceous (~86.3 to 83.6 million years ago)

Geological Stage: Santonian

Formation: Upper Chalk (Chalk Group)

Location: Foreness Point, Margate, Kent, United Kingdom

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

Specimen: You will receive the exact item shown in the photos

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

Geological and Paleontological Context

Echinocorys scutata vulgaris is the most common form of the Echinocorys genus and played an important role in the ancient chalk sea ecosystems of Late Cretaceous Europe. These echinoids lived in soft seabed sediments, feeding on detritus, and are often found in chalk deposits with exceptional preservation.

Phylum: Echinodermata

Class: Echinoidea

Order: Holasteroida

Family: Holasteridae

Genus: Echinocorys

Subspecies: scutata vulgaris

Depositional Environment: Calm, shallow marine platform composed of fine carbonate sediments; rich in coccoliths and marine microfossils ideal for fossilisation

Morphological Features: Subglobular test with smooth to faintly striated surface, five weakly developed ambulacral petals, centrally positioned peristome and periproct

Biozone: Found within mid to late Santonian biozones including foraminiferal and inoceramid bivalve zones that help define regional stratigraphy

Notable: The vulgaris form is an important biostratigraphic marker and a key reference in echinoid taxonomy and British chalk paleontology

Why This Fossil Is Special

This is a classic example of British Cretaceous chalk echinoids. Its preservation and completeness make it not only a beautiful natural object but also a scientifically significant specimen. Ideal for educational, decorative, or scientific purposes.

Why Buy From Us?

100% genuine fossil with Certificate of Authenticity

You will receive the exact specimen shown in the listing photos

Ethically collected from reputable geological sites in the UK

Ideal for collectors, educators, museums, or natural history enthusiasts

Secure a genuine piece of Britain's geological legacy with this Echinocorys scutata vulgaris fossil echinoid from the Upper Chalk of Foreness Point, Kent—a timeless relic of life from over 85 million years ago.

[uk-fossils]

British Chalk Fossil Echinoid – Echinocorys scutata | Santonian Upper Chalk Foreness Point Margate Kent UK | Genuine Specimen with COA

Offered here is a classic example of Echinocorys scutata, an extinct fossil echinoid (sea urchin) from the Upper Chalk Formation, deposited during the Santonian stage of the Late Cretaceous period, and collected from the well-known coastal site of Foreness Point, Margate, Kent, UK. This iconic species is one of the most recognisable and important fossils from the British chalk.

Fossil Type: Echinoid (Sea Urchin)

Species: Echinocorys scutata

Geological Period: Late Cretaceous (~86.3 to 83.6 million years ago)

Geological Stage: Santonian

Formation: Upper Chalk (Chalk Group)

Location: Foreness Point, Margate, Kent, United Kingdom

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

Specimen: The fossil in the photo is the exact one you will receive

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

Geological and Paleontological Context

Echinocorys scutata is a widespread and well-documented species of irregular echinoid, commonly found throughout the Upper Cretaceous chalk of Europe. It lived as a deposit feeder, burrowing within soft seafloor sediments beneath the ancient Cretaceous seas.

Phylum: Echinodermata

Class: Echinoidea

Order: Holasteroida

Family: Holasteridae

Genus: Echinocorys

Species: scutata

Depositional Environment: Quiet, shallow marine shelf with fine carbonate sedimentation from coccoliths; conditions ideal for fossilisation of echinoids and other marine invertebrates

Morphological Features: Oval to subglobular test (shell), well-developed ambulacral petals on the aboral surface, with a central periproct and flattened oral surface; radial symmetry with slight elongation along the oral-aboral axis

Biozone: Frequently found in mid-to-late Santonian stratigraphic levels; associated with key foraminiferal and inoceramid zones

Notable: Echinocorys scutata is an important biostratigraphic indicator for Upper Cretaceous chalk sequences and is widely used in geological studies of the British chalk

Why This Fossil is Special

This specimen is a true classic of British fossil collecting. Well-preserved, naturally shaped, and collected from a site of national geological importance, this Echinocorys scutata fossil makes an excellent teaching tool or collector’s piece. Its simple symmetry and subtle surface features also make it a beautiful display fossil.

Why Buy From Us?

100% genuine fossil with Certificate of Authenticity

You receive the exact item pictured

Carefully sourced from reputable British chalk fossil sites

Perfect for collectors, educators, or display in natural history settings

Add a timeless fossil to your collection with this Echinocorys scutata chalk echinoid from the Santonian stage of the Upper Cretaceous, Foreness Point, Kent—an elegant remnant of ancient marine life from over 85 million years ago.

[uk-fossils]

A-Grade British Chalk Fossil Echinoid – Echinocorys scutata depressula | Santonian Cretaceous Broadstairs Kent UK

This is a fine-quality, A-grade fossil specimen of Echinocorys scutata depressula, a subspecies of sea urchin from the Upper Chalk Formation, dated to the Santonian stage of the Late Cretaceous period, collected from the fossil-rich coastal site of Broadstairs, Kent, UK. This distinct form is flatter than other Echinocorys variants, making it a valuable addition to any echinoid or marine invertebrate fossil collection.

Fossil Type: Echinoid (Sea Urchin)

Species/Subspecies: Echinocorys scutata depressula

Geological Period: Late Cretaceous (~86.3 to 83.6 million years ago)

Geological Stage: Santonian

Formation: Upper Chalk (Chalk Group)

Location: Broadstairs, Kent, United Kingdom

Scale Rule: Squares/Cube = 1cm (Please refer to photo for exact sizing)

Specimen: The exact specimen shown in the listing photo is what you will receive

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

Geological and Paleontological Information

Echinocorys scutata depressula represents a distinct subspecies of the well-known chalk echinoid, notable for its depressed (flattened) profile and broad, slightly lower dome. These echinoids thrived in soft chalk marine seafloors, where they lived as infaunal deposit feeders.

Phylum: Echinodermata

Class: Echinoidea

Order: Holasteroida

Family: Holasteridae

Genus: Echinocorys

Subspecies: scutata depressula

Depositional Environment: Quiet, low-energy marine shelf; deposition of coccolith-rich chalk created ideal conditions for fossilisation of echinoids and other invertebrates

Morphological Features: Flattened, oval test (shell) with well-defined ambulacral petals; peristome and periproct typically located on flattened oral surface; delicate striae sometimes preserved

Biozone: Likely falls within mid to late Santonian ammonite or inoceramid biozones; important for stratigraphic correlation in UK chalk studies

Notable: This subspecies is less commonly encountered than scutata scutata and offers a refined morphotype for comparative echinoid studies

Why This Fossil is Special

A beautifully preserved flattened echinoid fossil from one of Britain’s most iconic Cretaceous formations, Echinocorys scutata depressula is an excellent study specimen and a visually striking display fossil. Its low profile and complete preservation make it a particularly collectible example.

Why Buy From Us?

100% genuine fossil with Certificate of Authenticity

You will receive the exact specimen shown in the photos

Carefully selected from reputable UK fossil sites

Perfect for fossil collectors, paleontology educators, and museum-quality display

Bring home an elegant piece of British geological history with this Echinocorys scutata depressula echinoid fossil from the Santonian Upper Chalk of Broadstairs, Kent—a well-preserved marine treasure from over 85 million years ago.

[uk-fossils]

Phymosoma magnificum Regular Echinoid Fossil, Campanian Stage, Cretaceous France | Authentic Specimen + COA

Phymosoma magnificum Regular Echinoid Fossil – Campanian Stage, Late Cretaceous, Talmont, Charente-Maritime, France

This striking fossil is a beautifully preserved specimen of Phymosoma magnificum, a regular echinoid (sea urchin) from the Campanian stage of the Late Cretaceous, approximately 83.6 to 72.1 million years ago. It was collected from the marine limestone beds around Talmont, located in the Charente-Maritime department of southwestern France—an area renowned for producing finely preserved Cretaceous invertebrate fossils.

Fossil Type & Species:

Type: Invertebrate Fossil (Regular Echinoid / Sea Urchin)

Species: Phymosoma magnificum

Phylum: Echinodermata

Class: Echinoidea

Order: Phymosomatoida (or Cidaroida, classification varies)

Family: Phymosomatidae

Described by: Agassiz, mid-19th century (genus authority)

Geological & Stratigraphic Details:

Location: Talmont-sur-Gironde, Charente-Maritime, France

Formation: Campanian marine chalk and marl beds

Geological Stage: Campanian (Late Cretaceous)

Age: ~83.6–72.1 million years ago

Biozone: Campanian echinoid-rich strata (specific subzone unassigned)

Depositional Environment: Shallow marine carbonate platform with quiet depositional conditions ideal for fossilisation of echinoderms and other invertebrates

Morphology & Features: This Phymosoma magnificum fossil displays:

Thick, rounded test (shell) with a symmetrical and slightly flattened shape

Prominent primary tubercles used for spine attachment, arranged in radiating rows

Deeply impressed ambulacral zones giving the shell a distinct petaloid appearance

Natural preservation in hues of beige, light brown, or pale grey

Often displays partial or associated spines and well-defined plate ornamentation

Notable: Phymosoma magnificum is one of the more ornate and well-known Cretaceous echinoid species from France. Its robust test, deeply impressed features, and balanced form make it both scientifically valuable and aesthetically striking. These fossils are often found in collections and museum exhibits focusing on Mesozoic marine invertebrates.

Specimen Details:

Origin: Talmont, Charente-Maritime, France

Species: Phymosoma magnificum

Fossil Type: Regular Echinoid / Sea Urchin Shell

Geological Stage: Campanian, Late Cretaceous

Size Reference: Scale rule square = 1cm (see listing photo for exact dimensions)

Note: You will receive the exact fossil specimen pictured

Authenticity & Quality: This fossil is 100% genuine, professionally verified, and selected for its completeness and natural appeal. It includes a Certificate of Authenticity. No restorations or enhancements applied.

Why Choose This Fossil? A perfect piece for:

Collectors of echinoids and Cretaceous fossils

Educational displays on marine palaeontology

Decorative natural history exhibits

Unique gifts for fossil enthusiasts and geologists

Shipping & Packaging: We use eco-conscious packaging and ship with full tracking and protection. Each fossil is carefully wrapped to ensure safe delivery.

Add an elegant and scientifically significant Cretaceous sea urchin to your collection with this stunning Phymosoma magnificum fossil from Talmont, France.

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

[uk-fossils]

Phymosoma magnificum Regular Echinoid Fossil, Campanian Stage, Cretaceous France | Authentic Specimen + COA

Phymosoma magnificum Regular Echinoid Fossil – Campanian Stage, Late Cretaceous, Talmont, Charente-Maritime, France

This striking fossil is a beautifully preserved specimen of Phymosoma magnificum, a regular echinoid (sea urchin) from the Campanian stage of the Late Cretaceous, approximately 83.6 to 72.1 million years ago. It was collected from the marine limestone beds around Talmont, located in the Charente-Maritime department of southwestern France—an area renowned for producing finely preserved Cretaceous invertebrate fossils.

Fossil Type & Species:

Type: Invertebrate Fossil (Regular Echinoid / Sea Urchin)

Species: Phymosoma magnificum

Phylum: Echinodermata

Class: Echinoidea

Order: Phymosomatoida (or Cidaroida, classification varies)

Family: Phymosomatidae

Described by: Agassiz, mid-19th century (genus authority)

Geological & Stratigraphic Details:

Location: Talmont-sur-Gironde, Charente-Maritime, France

Formation: Campanian marine chalk and marl beds

Geological Stage: Campanian (Late Cretaceous)

Age: ~83.6–72.1 million years ago

Biozone: Campanian echinoid-rich strata (specific subzone unassigned)

Depositional Environment: Shallow marine carbonate platform with quiet depositional conditions ideal for fossilisation of echinoderms and other invertebrates

Morphology & Features: This Phymosoma magnificum fossil displays:

Thick, rounded test (shell) with a symmetrical and slightly flattened shape

Prominent primary tubercles used for spine attachment, arranged in radiating rows

Deeply impressed ambulacral zones giving the shell a distinct petaloid appearance

Natural preservation in hues of beige, light brown, or pale grey

Often displays partial or associated spines and well-defined plate ornamentation

Notable: Phymosoma magnificum is one of the more ornate and well-known Cretaceous echinoid species from France. Its robust test, deeply impressed features, and balanced form make it both scientifically valuable and aesthetically striking. These fossils are often found in collections and museum exhibits focusing on Mesozoic marine invertebrates.

Specimen Details:

Origin: Talmont, Charente-Maritime, France

Species: Phymosoma magnificum

Fossil Type: Regular Echinoid / Sea Urchin Shell

Geological Stage: Campanian, Late Cretaceous

Size Reference: Scale rule square = 1cm (see listing photo for exact dimensions)

Note: You will receive the exact fossil specimen pictured

Authenticity & Quality: This fossil is 100% genuine, professionally verified, and selected for its completeness and natural appeal. It includes a Certificate of Authenticity. No restorations or enhancements applied.

Why Choose This Fossil? A perfect piece for:

Collectors of echinoids and Cretaceous fossils

Educational displays on marine palaeontology

Decorative natural history exhibits

Unique gifts for fossil enthusiasts and geologists

Shipping & Packaging: We use eco-conscious packaging and ship with full tracking and protection. Each fossil is carefully wrapped to ensure safe delivery.

Add an elegant and scientifically significant Cretaceous sea urchin to your collection with this stunning Phymosoma magnificum fossil from Talmont, France.

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

[uk-fossils]

Phymosoma magnificum Regular Echinoid Fossil, Campanian Stage, Cretaceous France | Authentic Specimen + COA

Phymosoma magnificum Regular Echinoid Fossil – Campanian Stage, Late Cretaceous, Talmont, Charente-Maritime, France

This striking fossil is a beautifully preserved specimen of Phymosoma magnificum, a regular echinoid (sea urchin) from the Campanian stage of the Late Cretaceous, approximately 83.6 to 72.1 million years ago. It was collected from the marine limestone beds around Talmont, located in the Charente-Maritime department of southwestern France—an area renowned for producing finely preserved Cretaceous invertebrate fossils.

Fossil Type & Species:

Type: Invertebrate Fossil (Regular Echinoid / Sea Urchin)

Species: Phymosoma magnificum

Phylum: Echinodermata

Class: Echinoidea

Order: Phymosomatoida (or Cidaroida, classification varies)

Family: Phymosomatidae

Described by: Agassiz, mid-19th century (genus authority)

Geological & Stratigraphic Details:

Location: Talmont-sur-Gironde, Charente-Maritime, France

Formation: Campanian marine chalk and marl beds

Geological Stage: Campanian (Late Cretaceous)

Age: ~83.6–72.1 million years ago

Biozone: Campanian echinoid-rich strata (specific subzone unassigned)

Depositional Environment: Shallow marine carbonate platform with quiet depositional conditions ideal for fossilisation of echinoderms and other invertebrates

Morphology & Features: This Phymosoma magnificum fossil displays:

Thick, rounded test (shell) with a symmetrical and slightly flattened shape

Prominent primary tubercles used for spine attachment, arranged in radiating rows

Deeply impressed ambulacral zones giving the shell a distinct petaloid appearance

Natural preservation in hues of beige, light brown, or pale grey

Often displays partial or associated spines and well-defined plate ornamentation

Notable: Phymosoma magnificum is one of the more ornate and well-known Cretaceous echinoid species from France. Its robust test, deeply impressed features, and balanced form make it both scientifically valuable and aesthetically striking. These fossils are often found in collections and museum exhibits focusing on Mesozoic marine invertebrates.

Specimen Details:

Origin: Talmont, Charente-Maritime, France

Species: Phymosoma magnificum

Fossil Type: Regular Echinoid / Sea Urchin Shell

Geological Stage: Campanian, Late Cretaceous

Size Reference: Scale rule square = 1cm (see listing photo for exact dimensions)

Note: You will receive the exact fossil specimen pictured

Authenticity & Quality: This fossil is 100% genuine, professionally verified, and selected for its completeness and natural appeal. It includes a Certificate of Authenticity. No restorations or enhancements applied.

Why Choose This Fossil? A perfect piece for:

Collectors of echinoids and Cretaceous fossils

Educational displays on marine palaeontology

Decorative natural history exhibits

Unique gifts for fossil enthusiasts and geologists

Shipping & Packaging: We use eco-conscious packaging and ship with full tracking and protection. Each fossil is carefully wrapped to ensure safe delivery.

Add an elegant and scientifically significant Cretaceous sea urchin to your collection with this stunning Phymosoma magnificum fossil from Talmont, France.

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

[uk-fossils]

Phymosoma magnificum Regular Echinoid Fossil, Campanian Stage, Cretaceous France | Authentic Specimen + COA

Phymosoma magnificum Regular Echinoid Fossil – Campanian Stage, Late Cretaceous, Talmont, Charente-Maritime, France

This striking fossil is a beautifully preserved specimen of Phymosoma magnificum, a regular echinoid (sea urchin) from the Campanian stage of the Late Cretaceous, approximately 83.6 to 72.1 million years ago. It was collected from the marine limestone beds around Talmont, located in the Charente-Maritime department of southwestern France—an area renowned for producing finely preserved Cretaceous invertebrate fossils.

Fossil Type & Species:

Type: Invertebrate Fossil (Regular Echinoid / Sea Urchin)

Species: Phymosoma magnificum

Phylum: Echinodermata

Class: Echinoidea

Order: Phymosomatoida (or Cidaroida, classification varies)

Family: Phymosomatidae

Described by: Agassiz, mid-19th century (genus authority)

Geological & Stratigraphic Details:

Location: Talmont-sur-Gironde, Charente-Maritime, France

Formation: Campanian marine chalk and marl beds

Geological Stage: Campanian (Late Cretaceous)

Age: ~83.6–72.1 million years ago

Biozone: Campanian echinoid-rich strata (specific subzone unassigned)

Depositional Environment: Shallow marine carbonate platform with quiet depositional conditions ideal for fossilisation of echinoderms and other invertebrates

Morphology & Features: This Phymosoma magnificum fossil displays:

Thick, rounded test (shell) with a symmetrical and slightly flattened shape

Prominent primary tubercles used for spine attachment, arranged in radiating rows

Deeply impressed ambulacral zones giving the shell a distinct petaloid appearance

Natural preservation in hues of beige, light brown, or pale grey

Often displays partial or associated spines and well-defined plate ornamentation

Notable: Phymosoma magnificum is one of the more ornate and well-known Cretaceous echinoid species from France. Its robust test, deeply impressed features, and balanced form make it both scientifically valuable and aesthetically striking. These fossils are often found in collections and museum exhibits focusing on Mesozoic marine invertebrates.

Specimen Details:

Origin: Talmont, Charente-Maritime, France

Species: Phymosoma magnificum

Fossil Type: Regular Echinoid / Sea Urchin Shell

Geological Stage: Campanian, Late Cretaceous

Size Reference: Scale rule square = 1cm (see listing photo for exact dimensions)

Note: You will receive the exact fossil specimen pictured

Authenticity & Quality: This fossil is 100% genuine, professionally verified, and selected for its completeness and natural appeal. It includes a Certificate of Authenticity. No restorations or enhancements applied.

Why Choose This Fossil? A perfect piece for:

Collectors of echinoids and Cretaceous fossils

Educational displays on marine palaeontology

Decorative natural history exhibits

Unique gifts for fossil enthusiasts and geologists

Shipping & Packaging: We use eco-conscious packaging and ship with full tracking and protection. Each fossil is carefully wrapped to ensure safe delivery.

Add an elegant and scientifically significant Cretaceous sea urchin to your collection with this stunning Phymosoma magnificum fossil from Talmont, France.

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

[uk-fossils]

Acrosalenia hemicidaroides Echinoid Fossil + Spines, Bajocian Stage, Jurassic France | Rare Authentic Specimen + COA

Acrosalenia hemicidaroides Echinoid Fossil with Spines – Bajocian Stage, Middle Jurassic, Neufchâteau, France

This exceptionally rare fossil specimen features a beautifully preserved Acrosalenia hemicidaroides echinoid, complete with fossilised spines, from the Bajocian stage of the Middle Jurassic, approximately 170 to 168 million years ago. It was discovered in the renowned marine fossil deposits of Neufchâteau, northeastern France.

Fossil Type & Species:

Type: Invertebrate Fossil (Echinoid/Sea Urchin + Detached Spines)

Species: Acrosalenia hemicidaroides

Phylum: Echinodermata

Class: Echinoidea

Order: Cidaroida

Family: Hemicidaridae

Described by: d'Orbigny, 1850 (species known since the mid-19th century)

Geological & Stratigraphic Details:

Location: Neufchâteau, Vosges, France

Formation: Bajocian marine limestone/marl layers

Geological Stage: Bajocian, Middle Jurassic

Age: ~170–168 million years ago

Depositional Environment: Shallow marine carbonate platform, ideal for echinoderm preservation due to low-energy sedimentation and early calcite mineralisation

Biozone: Bajocian ammonite biozones (exact echinoid zonation not formally assigned)

Morphology & Features: This fossil displays key traits of Acrosalenia hemicidaroides:

Spherical to sub-hemispherical test (shell) with intricate tubercle patterns

Thick, robust primary spines, often found detached and fossilised alongside the test

Ambulacral plating in orderly radial arrangement with fine granulation

Distinct oral and aboral surfaces, sometimes visible in partially exposed or prepared examples

Colour ranges from pale grey to light brown due to local matrix mineralisation

Notable: This species is a classic example of Jurassic cidaroid echinoids and is rarely found with spines preserved in association. The presence of spines makes this a scientifically significant and highly aesthetic specimen, ideal for both collectors and educators.

Specimen Details:

Origin: Neufchâteau, France

Species: Acrosalenia hemicidaroides

Fossil Type: Echinoid (Sea Urchin) Test and Spines

Geological Stage: Bajocian, Middle Jurassic

Size Reference: Scale rule square = 1cm (see listing photos for accurate sizing)

Note: The specimen pictured is the exact item you will receive

Authenticity & Quality: All our fossils are guaranteed genuine and carefully selected. This piece includes a Certificate of Authenticity and has not been restored or enhanced.

Why Choose This Fossil? An ideal specimen for:

Serious fossil collectors and echinoderm enthusiasts

Museum or university-level palaeontology displays

Decorative fossil showcases

Education in marine palaeobiology and Jurassic ecosystems

Shipping & Packaging: All items are professionally packed with eco-conscious materials and shipped via tracked services for safe delivery.

Add a stunning piece of Jurassic marine life to your collection with this rare Acrosalenia hemicidaroides echinoid fossil complete with spines from Neufchâteau, France.

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

[uk-fossils]

Small Echinoid Fossil - Salenia prestensis - Cretaceous, Aptian, Morella Spain - Genuine Specimen with Certificate

This listing features a beautifully preserved small echinoid fossil of the species Salenia prestensis, sourced from the Aptian stage of the Cretaceous period in the Morella region, Castellón province, Spain. This genuine fossil showcases the characteristic features of this extinct sea urchin, offering both scientific value and aesthetic charm.

Salenia prestensis belonged to a genus of regular echinoids that lived during the Lower Cretaceous. These marine echinoderms are recognized by their spherical to slightly flattened tests, covered with tiny tubercles and spines in life. Fossils of this genus are relatively rare and sought after, particularly from the rich sedimentary beds of the Iberian Peninsula.

The exact fossil shown in the photographs is what you will receive, accompanied by a 1cm scale cube for sizing reference.

Geological & Fossil Context:

Species: Salenia prestensis (Regular Echinoid)

Type: Fossilised sea urchin (echinoderm)

Formation: Cretaceous marine limestone

Location: Morella, Castellón Province, Spain

Age: Aptian Stage, Lower Cretaceous (~125–113 million years ago)

Fossil Features:

Preservation: Excellent preservation of surface texture and overall form

Preparation: Carefully cleaned to reveal natural detail

Condition: 100% genuine and stable, suitable for display or study

Product Highlights:

Genuine Salenia prestensis echinoid fossil

Sourced from a classic Cretaceous locality in Spain

Includes a Certificate of Authenticity

An ideal piece for collectors, educators, or natural history enthusiasts

The Aptian marine deposits near Morella are well-known for producing high-quality fossils, and this echinoid is a perfect example of the biodiversity that flourished in Cretaceous seas. With its detailed morphology and historical significance, this fossil is both a decorative and educational treasure.

Please review all photos for size and detail. The item shown is the exact specimen you will receive.

Own a rare and exquisite Salenia prestensis echinoid fossil from Spain’s ancient seas.

[uk-fossils]

Hyposalenia Regular Echinoid Fossil - Greensand, Cretaceous, Seaton Devon UK - Genuine Specimen with Certificate

This listing features a well-preserved Hyposalenia regular echinoid fossil, discovered on 24 March 2025 by our expert fossil hunting team Alister and Alison at Seaton, Devon, United Kingdom. This small and beautifully detailed sea urchin fossil has been expertly cleaned, prepped, and treated by Alison, ensuring excellent preservation and scientific integrity.

Hyposalenia is a genus of regular echinoids (sea urchins) from the Cretaceous period, typically found in Greensand deposits. These echinoids are characterised by their symmetrical, globular test and neatly arranged tubercles that once supported spines. They lived in shallow marine environments, contributing to the rich biodiversity of the Cretaceous seas.

The fossil pictured is the exact specimen you will receive, shown alongside a 1cm scale cube for accurate sizing.

Geological & Fossil Context:

Species: Hyposalenia sp. (Regular echinoid)

Type: Fossilised marine invertebrate (sea urchin)

Formation: Greensand

Location: Seaton, Devon, United Kingdom

Age: Cretaceous (~145–66 million years ago)

Fossil Features:

Preservation: Excellent, with complete shell and tubercle detail

Preparation: Professionally cleaned, stabilised, and treated by Alison

Condition: Ready for study, education, or display

Product Highlights:

100% Authentic Fossil Echinoid

Discovered and prepared by Alister & Alison

Supplied with a Certificate of Authenticity

Ideal for collectors, educators, or fossil enthusiasts

The Greensand deposits of Seaton are well known for yielding marine fossils, and this Hyposalenia echinoid is a rare and valuable example. Its beautiful symmetry and preservation make it both a scientifically significant and aesthetically pleasing addition to any collection.

Please consult the listing photos for full sizing and details. The specimen shown is the exact one you will receive.

Add this genuine Cretaceous echinoid to your fossil collection today with this exceptional Hyposalenia fossil from Devon.