#authentic echinoid fossil

[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.

[uk-fossils]

Pseudodiadema depressum Regular Echinoid Fossil, Oxfordian Stage, Jurassic France | Authentic Specimen + COA

Pseudodiadema depressum Regular Echinoid Fossil – Oxfordian Stage, Late Jurassic, Cricqueboeuf, Normandy, France

This fine fossil specimen represents Pseudodiadema depressum, a regular echinoid (sea urchin) from the Oxfordian stage of the Late Jurassic, approximately 159 to 154 million years ago. It was recovered from the fossil-rich marine limestone beds of Cricqueboeuf, a renowned site in Normandy, northern France.

Fossil Type & Species:

Type: Invertebrate Fossil (Regular Echinoid / Sea Urchin)

Species: Pseudodiadema depressum

Phylum: Echinodermata

Class: Echinoidea

Order: Cidaroida

Superfamily: Pseudodiadematoidea

Family: Pseudodiadematidae

Described by: Cotteau, 1863

Geological & Stratigraphic Details:

Location: Cricqueboeuf, Calvados, Normandy, France

Formation: Oxfordian marine limestones

Geological Stage: Oxfordian (Upper Jurassic)

Age: ~159–154 million years ago

Biozone: Perisphinctes ammonite zone (regional correlation)

Depositional Environment: Shallow marine carbonate platform with calm, warm seas; ideal for the preservation of delicate echinoid shells in fine-grained limestones

Morphology & Features: This Pseudodiadema depressum specimen features:

Sub-hemispherical, symmetrical test with clear ambital outline

Densely arranged primary and secondary tubercles forming a detailed lattice across the shell

Well-developed ambulacral and interambulacral zones, sometimes showing fine pore structures

No spines attached, but tubercle structure suggests strong spine-bearing capability

Subtle colour variations from beige to pale brown, depending on matrix contact

Notable: Pseudodiadema depressum is a classic species of Jurassic echinoid used in palaeoenvironmental and biostratigraphic studies. Its compact test and distinctive tubercle patterning make it both scientifically important and visually appealing.

Specimen Details:

Origin: Cricqueboeuf, Normandy, France

Species: Pseudodiadema depressum

Fossil Type: Echinoid Shell (Regular Sea Urchin)

Geological Stage: Oxfordian, Late Jurassic

Size Reference: Scale rule square = 1cm (please refer to the listing photo for full size)

Note: You will receive the exact specimen shown in the photographs

Authenticity & Quality: All our fossils are genuine and professionally selected. This specimen includes a Certificate of Authenticity. No restorations or artificial enhancements are applied.

Why Choose This Fossil? Perfect for:

Fossil and echinoderm collectors

Academic and educational purposes

Natural history displays

Unique gifts with palaeontological value

Shipping & Packaging: Eco-conscious packaging and tracked global shipping ensure secure and swift delivery. Each fossil is packed with care to preserve detail and structure.

Own a finely preserved sea urchin from the Jurassic oceans of France with this authentic Pseudodiadema depressum echinoid fossil.

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

[uk-fossils]

Phymosoma texanum Fossil Regular Echinoid Lower Cretaceous Texas USA Genuine Specimen

Now available is a genuine Phymosoma texanum fossil, a classic regular echinoid (sea urchin) from the Lower Cretaceous Period (approximately 145 to 100 million years ago). This specimen was collected from the well-known fossil-bearing formations of Texas, USA, which have long yielded some of the finest Cretaceous echinoids in North America.

Geology & Origin:

During the Lower Cretaceous, the region now known as Texas was part of a shallow inland sea teeming with marine life. Organisms like Phymosoma texanum thrived on the sea floor, and when they died, their hard exoskeletons (tests) were buried by sediment. Over millions of years, mineralization preserved them in exquisite detail, creating this highly collectible fossil.

Fossil Type & Species:

Type: Fossil Echinoid (Regular Sea Urchin)

Species: Phymosoma texanum

Preservation: Very good, with well-defined test and tubercles

Features:

100% genuine, natural fossil specimen

Comes with a Certificate of Authenticity

Professionally selected for its preservation quality and detail

The exact specimen shown in the listing photos

Scale cube = 1cm: Full sizing viewable in photo for accuracy

Why Buy From Us? We specialize in offering authentic, expertly curated fossils from around the world. Each fossil is carefully selected and includes a Certificate of Authenticity, ensuring your complete confidence in its origin and quality.

Perfect for collectors, educators, or as a striking piece of prehistoric marine life for home or office display.

[uk-fossils]

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic, Banbury, Oxfordshire, UK | Authentic Specimen

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic Period – Southworld Quarry, Banbury, Oxfordshire, United Kingdom

This listing features a rare Clypeus ploti fossil echinoid from the Inferior Oolite Formation of the Jurassic period, discovered at Southworld Quarry, Banbury, Oxfordshire, United Kingdom. This authentic specimen showcases the characteristic flat, disc-like shape and intricate surface features typical of the Clypeus genus.

About Clypeus ploti:

Clypeus ploti is an extinct species of echinoid, commonly referred to as a sea urchin, that thrived in the shallow seas of the Jurassic period. Known for its distinctive circular, flattened test (shell) with radial symmetry and fine surface details, Clypeus ploti is one of the most recognizable echinoid fossils found in the UK. These echinoids were slow-moving bottom dwellers, feeding on detritus in the seafloor sediment.

Geological Context:

Formation: Inferior Oolite

Age: Middle Jurassic (~174 – 164 million years ago)

Location: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

The Inferior Oolite Formation is renowned for its fossil-rich limestone deposits, preserving a diverse range of marine life, including ammonites, bivalves, gastropods, and echinoids. The Middle Jurassic seas that covered Oxfordshire provided ideal conditions for the preservation of marine organisms like Clypeus ploti.

Fossil Details:

100% Genuine Clypeus ploti Fossil Echinoid

Age: Middle Jurassic (~174 – 164 million years ago)

Origin: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

Well-Preserved Flat Disc Shape with Fine Surface Detailing

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

Comes with a Certificate of Authenticity

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

Why This Specimen is Special:

Rare Jurassic Echinoid Fossil from the UK

Excellent preservation showcasing natural patterns and textures

Ideal for Collectors, Museums, or Educational Displays

Carefully selected for its geological and historical significance

A valuable addition to any fossil or natural history collection

This Clypeus ploti fossil echinoid is a stunning example of prehistoric marine life, offering a window into Earth’s ancient past. It is perfect for fossil enthusiasts, educators, and collectors.

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

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

[uk-fossils]

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic, Banbury, Oxfordshire, UK | Authentic Specimen

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic Period – Southworld Quarry, Banbury, Oxfordshire, United Kingdom

This listing features a rare Clypeus ploti fossil echinoid from the Inferior Oolite Formation of the Jurassic period, discovered at Southworld Quarry, Banbury, Oxfordshire, United Kingdom. This authentic specimen showcases the characteristic flat, disc-like shape and intricate surface features typical of the Clypeus genus.

About Clypeus ploti:

Clypeus ploti is an extinct species of echinoid, commonly referred to as a sea urchin, that thrived in the shallow seas of the Jurassic period. Known for its distinctive circular, flattened test (shell) with radial symmetry and fine surface details, Clypeus ploti is one of the most recognizable echinoid fossils found in the UK. These echinoids were slow-moving bottom dwellers, feeding on detritus in the seafloor sediment.

Geological Context:

Formation: Inferior Oolite

Age: Middle Jurassic (~174 – 164 million years ago)

Location: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

The Inferior Oolite Formation is renowned for its fossil-rich limestone deposits, preserving a diverse range of marine life, including ammonites, bivalves, gastropods, and echinoids. The Middle Jurassic seas that covered Oxfordshire provided ideal conditions for the preservation of marine organisms like Clypeus ploti.

Fossil Details:

100% Genuine Clypeus ploti Fossil Echinoid

Age: Middle Jurassic (~174 – 164 million years ago)

Origin: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

Well-Preserved Flat Disc Shape with Fine Surface Detailing

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

Comes with a Certificate of Authenticity

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

Why This Specimen is Special:

Rare Jurassic Echinoid Fossil from the UK

Excellent preservation showcasing natural patterns and textures

Ideal for Collectors, Museums, or Educational Displays

Carefully selected for its geological and historical significance

A valuable addition to any fossil or natural history collection

This Clypeus ploti fossil echinoid is a stunning example of prehistoric marine life, offering a window into Earth’s ancient past. It is perfect for fossil enthusiasts, educators, and collectors.

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

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

[uk-fossils]

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic, Banbury, Oxfordshire, UK | Authentic Specimen

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic Period – Southworld Quarry, Banbury, Oxfordshire, United Kingdom

This listing features a rare Clypeus ploti fossil echinoid from the Inferior Oolite Formation of the Jurassic period, discovered at Southworld Quarry, Banbury, Oxfordshire, United Kingdom. This authentic specimen showcases the characteristic flat, disc-like shape and intricate surface features typical of the Clypeus genus.

About Clypeus ploti:

Clypeus ploti is an extinct species of echinoid, commonly referred to as a sea urchin, that thrived in the shallow seas of the Jurassic period. Known for its distinctive circular, flattened test (shell) with radial symmetry and fine surface details, Clypeus ploti is one of the most recognizable echinoid fossils found in the UK. These echinoids were slow-moving bottom dwellers, feeding on detritus in the seafloor sediment.

Geological Context:

Formation: Inferior Oolite

Age: Middle Jurassic (~174 – 164 million years ago)

Location: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

The Inferior Oolite Formation is renowned for its fossil-rich limestone deposits, preserving a diverse range of marine life, including ammonites, bivalves, gastropods, and echinoids. The Middle Jurassic seas that covered Oxfordshire provided ideal conditions for the preservation of marine organisms like Clypeus ploti.

Fossil Details:

100% Genuine Clypeus ploti Fossil Echinoid

Age: Middle Jurassic (~174 – 164 million years ago)

Origin: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

Well-Preserved Flat Disc Shape with Fine Surface Detailing

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

Comes with a Certificate of Authenticity

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

Why This Specimen is Special:

Rare Jurassic Echinoid Fossil from the UK

Excellent preservation showcasing natural patterns and textures

Ideal for Collectors, Museums, or Educational Displays

Carefully selected for its geological and historical significance

A valuable addition to any fossil or natural history collection

This Clypeus ploti fossil echinoid is a stunning example of prehistoric marine life, offering a window into Earth’s ancient past. It is perfect for fossil enthusiasts, educators, and collectors.

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

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

[uk-fossils]

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic, Banbury, Oxfordshire, UK | Authentic Specimen

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic Period – Southworld Quarry, Banbury, Oxfordshire, United Kingdom

This listing features a rare Clypeus ploti fossil echinoid from the Inferior Oolite Formation of the Jurassic period, discovered at Southworld Quarry, Banbury, Oxfordshire, United Kingdom. This authentic specimen showcases the characteristic flat, disc-like shape and intricate surface features typical of the Clypeus genus.

About Clypeus ploti:

Clypeus ploti is an extinct species of echinoid, commonly referred to as a sea urchin, that thrived in the shallow seas of the Jurassic period. Known for its distinctive circular, flattened test (shell) with radial symmetry and fine surface details, Clypeus ploti is one of the most recognizable echinoid fossils found in the UK. These echinoids were slow-moving bottom dwellers, feeding on detritus in the seafloor sediment.

Geological Context:

Formation: Inferior Oolite

Age: Middle Jurassic (~174 – 164 million years ago)

Location: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

The Inferior Oolite Formation is renowned for its fossil-rich limestone deposits, preserving a diverse range of marine life, including ammonites, bivalves, gastropods, and echinoids. The Middle Jurassic seas that covered Oxfordshire provided ideal conditions for the preservation of marine organisms like Clypeus ploti.

Fossil Details:

100% Genuine Clypeus ploti Fossil Echinoid

Age: Middle Jurassic (~174 – 164 million years ago)

Origin: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

Well-Preserved Flat Disc Shape with Fine Surface Detailing

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

Comes with a Certificate of Authenticity

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

Why This Specimen is Special:

Rare Jurassic Echinoid Fossil from the UK

Excellent preservation showcasing natural patterns and textures

Ideal for Collectors, Museums, or Educational Displays

Carefully selected for its geological and historical significance

A valuable addition to any fossil or natural history collection

This Clypeus ploti fossil echinoid is a stunning example of prehistoric marine life, offering a window into Earth’s ancient past. It is perfect for fossil enthusiasts, educators, and collectors.

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

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

[uk-fossils]

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic, Banbury, Oxfordshire, UK | Authentic Specimen

Rare Clypeus ploti Fossil Echinoid – Inferior Oolite, Jurassic Period – Southworld Quarry, Banbury, Oxfordshire, United Kingdom

This listing features a rare Clypeus ploti fossil echinoid from the Inferior Oolite Formation of the Jurassic period, discovered at Southworld Quarry, Banbury, Oxfordshire, United Kingdom. This authentic specimen showcases the characteristic flat, disc-like shape and intricate surface features typical of the Clypeus genus.

About Clypeus ploti:

Clypeus ploti is an extinct species of echinoid, commonly referred to as a sea urchin, that thrived in the shallow seas of the Jurassic period. Known for its distinctive circular, flattened test (shell) with radial symmetry and fine surface details, Clypeus ploti is one of the most recognizable echinoid fossils found in the UK. These echinoids were slow-moving bottom dwellers, feeding on detritus in the seafloor sediment.

Geological Context:

Formation: Inferior Oolite

Age: Middle Jurassic (~174 – 164 million years ago)

Location: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

The Inferior Oolite Formation is renowned for its fossil-rich limestone deposits, preserving a diverse range of marine life, including ammonites, bivalves, gastropods, and echinoids. The Middle Jurassic seas that covered Oxfordshire provided ideal conditions for the preservation of marine organisms like Clypeus ploti.

Fossil Details:

100% Genuine Clypeus ploti Fossil Echinoid

Age: Middle Jurassic (~174 – 164 million years ago)

Origin: Southworld Quarry, Banbury, Oxfordshire, United Kingdom

Well-Preserved Flat Disc Shape with Fine Surface Detailing

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

Comes with a Certificate of Authenticity

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

Why This Specimen is Special:

Rare Jurassic Echinoid Fossil from the UK

Excellent preservation showcasing natural patterns and textures

Ideal for Collectors, Museums, or Educational Displays

Carefully selected for its geological and historical significance

A valuable addition to any fossil or natural history collection

This Clypeus ploti fossil echinoid is a stunning example of prehistoric marine life, offering a window into Earth’s ancient past. It is perfect for fossil enthusiasts, educators, and collectors.

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

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

[uk-fossils]

Rare Echinobrissus orbicularis Fossil Echinoid – Middle Jurassic, Northamptonshire, UK | Authentic Specimen

Rare Echinobrissus orbicularis Fossil Echinoid – Middle Jurassic Period – Northamptonshire, United Kingdom

This listing features a rare Echinobrissus orbicularis fossil echinoid from the Middle Jurassic period, discovered in Northamptonshire, United Kingdom. This beautifully preserved specimen showcases the distinctive rounded shape and intricate surface patterns characteristic of the Echinobrissus genus.

About Echinobrissus orbicularis:

Echinobrissus orbicularis is an extinct species of echinoid, commonly known as a sea urchin, that thrived in shallow marine environments during the Middle Jurassic. Known for its orbicular, flattened shell and finely detailed surface features, this species is a fascinating representation of Jurassic marine biodiversity. Echinoids like Echinobrissus played a crucial role in marine ecosystems as sediment feeders and are highly sought after by fossil collectors.

Geological Context:

Age: Middle Jurassic (~174 – 164 million years ago)

Location: Northamptonshire, United Kingdom

The Middle Jurassic period was a time of extensive shallow seas teeming with life. Northamptonshire is well-known for its rich fossil beds, which have yielded a diverse array of marine fossils, including ammonites, bivalves, and echinoids like Echinobrissus orbicularis.

Fossil Details:

100% Genuine Echinobrissus orbicularis Fossil Echinoid

Age: Middle Jurassic (~174 – 164 million years ago)

Origin: Northamptonshire, United Kingdom

Beautiful Natural Preservation with Intricate Surface Detailing

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

Comes with a Certificate of Authenticity

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

Why This Specimen is Special:

Rare Jurassic Echinoid Fossil from the UK

Excellent preservation showcasing natural textures

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 Echinobrissus orbicularis fossil echinoid provides 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 unique piece of Jurassic marine history to your collection today!

[uk-fossils]

HOLECTYPUS DEPRESSUS Fossil Echinoid Sea Urchin Jurassic Cornbrash Somerset UK Authentic Specimen

This listing features a well-preserved fossil echinoid (sea urchin) of the species Holectypus depressus, collected from the Cornbrash Formation in Somerset, United Kingdom. This authentic Jurassic marine invertebrate fossil is provided with a Certificate of Authenticity, and the photo shows the exact specimen you will receive.

Holectypus depressus belongs to:

Order: Holectypoida

Family: Holectypidae

This echinoid lived during the Bathonian Stage of the Middle Jurassic Period, approximately 168–166 million years ago. The Cornbrash Formation consists of marine shelly limestones and mudstones deposited in a shallow marine, inner shelf environment that supported a diverse array of invertebrate life.

Morphological Features:

Flattened, oval test (shell) with a low dome profile

Petaloid ambulacra with finely impressed pore pairs

Oral surface flattened with distinct peristome

Smooth to lightly granulated surface, often symmetrical

These features suggest an infaunal or semi-infaunal lifestyle, with the organism likely burrowing or living on soft marine sediments.

Specimen Details:

Species: Holectypus depressus

Fossil Type: Echinoid (Sea Urchin) Test

Geological Unit: Cornbrash Formation

Geological Age: Middle Jurassic (Bathonian Stage)

Location: Somerset, United Kingdom

Depositional Environment: Shallow marine shelf, calcareous muds and shelly limestones

Family: Holectypidae

This is a fine example of a Jurassic echinoid fossil from a historically significant geological unit in the UK, ideal for fossil collectors, educators, or anyone with a passion for ancient marine life.

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

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

[uk-fossils]

British Chalk Fossil Echinoid - Echinocorys scutata depressula - Santonian Cretaceous, Broadstairs UK

This listing offers a scientifically significant British Chalk Fossil Echinoid, identified as Echinocorys scutata depressula, collected from Broadstairs, Kent, UK. Dating to the Santonian Stage of the Late Cretaceous, this echinoid is a well-preserved relic of ancient marine life found within England’s Upper Chalk sequences.

Taxonomic Classification:

Order: Holasteroida

Superfamily: Echinocorythoidea

Family: Echinocorythidae

Genus & Species: Echinocorys scutata depressula

Geological Context:

Period: Cretaceous

Stage: Santonian (approx. 86–83 million years ago)

Formation: White Chalk Subgroup (likely part of the Seaford Chalk Formation)

Depositional Environment: Calm, warm epicontinental sea with low-energy conditions that favoured the preservation of delicate marine life in fine carbonate sediments.

Morphological Features:

Flattened (depressed) test shape – the defining feature of the depressula form

Bilateral symmetry, smooth tuberculation, and defined apical system

Distinct periproct and peristome regions with posterior sloping

Infaunal, deposit-feeding lifestyle within soft chalky mud

Scientific Importance:

The depressula morphotype represents a particular ecological adaptation or developmental variation within the broader Echinocorys scutata species group

Its occurrence within specific chalk biozones contributes to detailed stratigraphic and palaeoenvironmental reconstructions of the Late Cretaceous

Locality Information:

Broadstairs, Kent, UK – a notable fossil locality in southeast England, part of the classic White Chalk exposures. The region offers beautifully preserved echinoids, ammonites, and other marine fossils from the Upper Cretaceous.

Presentation & Authenticity:

All of our fossils are 100% Genuine Specimens and are supplied with a Certificate of Authenticity. The images included in this listing show the exact specimen you will receive. Please refer to the photo for full sizing – scale rule cube = 1cm.

This is a hand-picked piece of palaeontological heritage, selected for its clarity of features and preservation quality. Ideal for educational collections, scientific reference, or as a fascinating natural history display.

Own a unique and genuine part of Britain’s ancient seabed – over 80 million years in the making!

[uk-fossils]

British Chalk Fossil Echinoid - Echinocorys scutata gravesi - Santonian Cretaceous, Broadstairs UK

This listing features a high-quality British Chalk Fossil Echinoid, scientifically known as Echinocorys scutata gravesi. This fossil originates from the Santonian Stage of the Cretaceous Period, and was collected at Broadstairs, Kent, UK, an esteemed locality along the southeastern chalk coast of England.

Taxonomic Classification:

Order: Holasteroida

Superfamily: Echinocorythoidea

Family: Echinocorythidae

Genus and Species: Echinocorys scutata gravesi

Geological Context:

Period: Cretaceous

Stage: Santonian (Late Cretaceous)

Formation: Upper Chalk Formation

Depositional Environment: Marine shelf environment. The chalk was deposited in a warm, shallow sea that covered much of what is now Europe during the Late Cretaceous, composed largely of coccolith-rich calcareous ooze accumulating slowly on the seafloor.

Morphological Features:

A slightly elongated, sub-rectangular to domed test (shell), differing from other Echinocorys morphotypes by its proportion and surface profile

Distinct bilateral symmetry with sunken ambulacra and finely tuberculated surface

Well-defined periproct and peristome features with posterior sloping

Adapted for semi-infaunal life, often found partially buried in carbonate-rich sediment

Notable Significance:

The gravesi morphotype represents a distinct form within the Echinocorys scutata species group and is notable for its specific stratigraphic and geographic distribution.

Used in biostratigraphic zonation and environmental reconstructions of Late Cretaceous chalk seas.

Locality:

Broadstairs, Kent, UK – an important fossil site within the English Upper Chalk exposures, known for producing well-preserved echinoid fossils.

Presentation & Authenticity:

All of our fossils are 100% Genuine Specimens and come with a Certificate of Authenticity. The listing includes actual photographs of the exact specimen you will receive. Please note that the scale cube = 1cm, and full sizing is visible in the photo provided.

This is a carefully chosen, scientifically significant fossil specimen, ideal for collectors, educators, and enthusiasts of British palaeontology and marine Cretaceous life. A unique glimpse into Earth’s ancient seas from over 85 million years ago.

[uk-fossils]

British Chalk Fossil Echinoid - Echinocorys scutata tectiformis - Cretaceous, Birling Gap UK

Offered here is a superb example of a British Chalk Fossil Echinoid, specifically Echinocorys scutata tectiformis, from the Middle Chalk Formation of the Cretaceous Period. This particular specimen was found at the iconic fossil locality of Birling Gap, Sussex, UK—a well-known section of the southern chalk cliffs of England.

Taxonomic Classification:

Order: Holasteroida

Superfamily: Echinocorythoidea

Family: Echinocorythidae

Genus & Species: Echinocorys scutata tectiformis

Geological Context:

Period: Cretaceous

Stage: Coniacian to Early Campanian

Formation: Middle Chalk

Depositional Environment: Calm, shallow marine shelf. The chalk was deposited in warm, lime-rich seas during the Late Cretaceous, forming thick beds of pure calcium carbonate with abundant microfossils and echinoids.

Morphological Features:

Sub-pyramidal to tent-shaped test (shell), a distinguishing feature of the tectiformis form

Bilaterally symmetrical with a flattened base and raised apex

Strong development of interambulacral plates with granular tubercles

Marked periproct and peristome regions

Adapted for infaunal life, often partially buried in the chalk mud substrate

Notable & Scientific Significance:

Echinocorys scutata tectiformis is a notable morphotype that reflects ecological adaptations within the Echinocorys lineage.

These echinoids are important for biostratigraphy within the Chalk and are often used to help date layers and interpret depositional conditions.

Locality Details:

Location: Birling Gap, near Eastbourne, Sussex, UK

Stratigraphy: Part of the Seaford Chalk Formation within the White Chalk Subgroup, which is richly fossiliferous and provides excellent preservation of echinoderm fauna.

Presentation & Authenticity:

All of our fossils are 100% Genuine Specimens and come with a Certificate of Authenticity. The listing shows images of the actual fossil you will receive. The scale rule squares / cube = 1cm. Full sizing details can be seen in the accompanying photograph.

This is a hand-selected piece, chosen for its preservation, form, and scientific relevance. Ideal for fossil collectors, chalk enthusiasts, educational displays, or anyone interested in Britain’s geological past.

Bring a piece of the Cretaceous seabed into your collection today!

[uk-fossils]

British Chalk Fossil Echinoid - Echinocorys scutata vulgaris - Cretaceous, Seaford UK

Discover a beautifully preserved British Chalk Fossil Echinoid from the Cretaceous Period, identified as Echinocorys scutata vulgaris. This authentic specimen originates from the Middle Chalk Formation, found in Seaford, Sussex, UK.

This echinoid belongs to the:

Order: Holasteroida

Superfamily: Echinocorythoidea

Family: Echinocorythidae

Geological Age & Formation:

Period: Cretaceous

Stage: Coniacian to Campanian (likely Seaford Chalk Formation age)

Depositional Environment: Shallow marine shelf – calm, warm seas rich in carbonate sediments leading to extensive chalk deposits.

Species Details:

Echinocorys scutata vulgaris is a common chalk echinoid with a thick, ovate test (shell) and highly distinctive symmetrical shape, often likened to a biscuit in form. It was an infaunal detritivore, living partially buried in soft carbonate mud and feeding on organic particles within the sediment.

Morphological Features:

Bilateral symmetry with a slightly domed apex

Distinct ambulacral and interambulacral areas

Well-developed periproct and peristome areas

Test is often robust and shows fine tuberculation (preserved in quality specimens)

Locality: Seaford, East Sussex, England – a classic UK locality for chalk fossils. The Seaford Chalk Formation is part of the White Chalk Subgroup.

Notable Facts:

Often referred to as the "Chalk Heart Urchin"

Found in abundance during the Cretaceous in European chalk seas

Helps in biostratigraphic correlation within the chalk sequences of Europe

Fossil Authenticity and Presentation:

All of our fossils are 100% Genuine Specimens and come with a Certificate of Authenticity. This listing includes photographs of the actual fossil specimen you will receive. The scale in the photo is in 1cm squares (scale cube visible), and full sizing details are included in the images.

This specimen has been carefully selected for its preservation and display quality. A fascinating piece for collectors, educators, or anyone with an interest in palaeontology and British geological heritage.

[uk-fossils]

British Chalk Fossil Echinoid - Echinocorys scutata vulgaris - Cretaceous, Seaford UK

Discover a beautifully preserved British Chalk Fossil Echinoid from the Cretaceous Period, identified as Echinocorys scutata vulgaris. This authentic specimen originates from the Middle Chalk Formation, found in Seaford, Sussex, UK.

This echinoid belongs to the:

Order: Holasteroida

Superfamily: Echinocorythoidea

Family: Echinocorythidae

Geological Age & Formation:

Period: Cretaceous

Stage: Coniacian to Campanian (likely Seaford Chalk Formation age)

Depositional Environment: Shallow marine shelf – calm, warm seas rich in carbonate sediments leading to extensive chalk deposits.

Species Details:

Echinocorys scutata vulgaris is a common chalk echinoid with a thick, ovate test (shell) and highly distinctive symmetrical shape, often likened to a biscuit in form. It was an infaunal detritivore, living partially buried in soft carbonate mud and feeding on organic particles within the sediment.

Morphological Features:

Bilateral symmetry with a slightly domed apex

Distinct ambulacral and interambulacral areas

Well-developed periproct and peristome areas

Test is often robust and shows fine tuberculation (preserved in quality specimens)

Locality: Seaford, East Sussex, England – a classic UK locality for chalk fossils. The Seaford Chalk Formation is part of the White Chalk Subgroup.

Notable Facts:

Often referred to as the "Chalk Heart Urchin"

Found in abundance during the Cretaceous in European chalk seas

Helps in biostratigraphic correlation within the chalk sequences of Europe

Fossil Authenticity and Presentation:

All of our fossils are 100% Genuine Specimens and come with a Certificate of Authenticity. This listing includes photographs of the actual fossil specimen you will receive. The scale in the photo is in 1cm squares (scale cube visible), and full sizing details are included in the images.

This specimen has been carefully selected for its preservation and display quality. A fascinating piece for collectors, educators, or anyone with an interest in palaeontology and British geological heritage.

[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.