#authentic fossil echinoid

[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]

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]

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.

[uk-fossils]

Eusalenia Fossil Echinoid | Small Jurassic Sea Urchin Oxfordshire UK | Genuine w/ COA

Fossil Type & Species: Eusalenia (small fossil echinoid – sea urchin)

Geological Formation: Middle Oxford Clay Formation

Geological Period: Middle Jurassic (approx. 163 – 157 million years ago)

Locality: Oxfordshire, United Kingdom

Detailed Description: This listing features a well-preserved fossil echinoid from the extinct genus Eusalenia, a group of small, irregular sea urchins that inhabited the shallow marine environments of the Jurassic seas. This particular specimen was collected from the Middle Oxford Clay deposits in Oxfordshire, UK, an area celebrated for its rich and diverse marine fossil content.

The fossil echinoid exhibits classic characteristics of Eusalenia: a gently domed test (shell), small size, and bilateral symmetry, with subtle surface features and defined plate structures. These features reflect an adaptation to soft seafloor sediments, where these echinoids lived and fed as part of a thriving Mesozoic marine ecosystem.

Geological Insight: The Oxford Clay Formation represents a mid-Jurassic marine environment laid down in a warm, shallow epicontinental sea. It is particularly well known for its abundance of marine fossils, including ammonites, marine reptiles, and a variety of invertebrates like echinoids. The preservation within the fine clay matrix ensures that even small and delicate specimens like Eusalenia can retain excellent detail.

Item Specifics:

Genus: Eusalenia

Fossil Type: Echinoid (Sea Urchin)

Condition: Natural, unrestored

Geological Period: Middle Jurassic

Formation: Oxford Clay

Location: Oxfordshire, UK

Size: Please see scale photo with 1cm squares

Item: Exact specimen shown in listing

Authenticity Guarantee: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. Each piece is carefully selected for quality and scientific interest. The fossil shown in the images is the actual one you will receive.

Shipping & Packaging: Shipped securely with protective packaging and tracking. An excellent item for collectors, educators, or anyone fascinated by Earth’s prehistoric past.

[uk-fossils]

Phymosoma Fossil Regular Echinoid Lower Cretaceous Spain Genuine Specimen

This listing features a genuine Phymosoma fossil, an excellent example of a regular echinoid (sea urchin) from the Lower Cretaceous Period (approximately 145 to 100 million years ago). This well-preserved specimen originates from the marine fossil deposits of Spain, known for their quality Cretaceous echinoderms.

Geology & Origin:

During the Lower Cretaceous, much of what is now Spain was covered by shallow seas teeming with marine life. Echinoids like Phymosoma lived on the seafloor and were occasionally buried quickly under fine sediment, leading to exceptional fossil preservation. Today, these fossil beds yield some of the finest echinoid specimens in Europe.

Fossil Type & Species:

Type: Fossil Echinoid (Regular Sea Urchin)

Genus: Phymosoma

Preservation: Very good, with detailed test and natural morphology

Features:

100% genuine, natural fossil specimen

Includes a Certificate of Authenticity

Hand-selected for its aesthetic and scientific value

The exact specimen pictured is the one you will receive

Scale cube = 1cm: See photo for accurate sizing

Why Buy From Us? We offer only authentic, professionally prepared fossils, carefully selected from trusted sources. Every specimen is accompanied by a Certificate of Authenticity, ensuring complete buyer confidence.

An excellent addition for collectors, fossil enthusiasts, educators, or as a one-of-a-kind natural decor piece.

[uk-fossils]

Pygaster Fossil Regular Echinoid Jurassic Dorset UK Genuine Specimen

Featured here is a genuine Pygaster fossil, a well-preserved example of a regular echinoid (sea urchin) from the Jurassic Period (approximately 201 to 145 million years ago). This specimen was sourced from the famous fossil beds of Dorset, UK, part of England's renowned Jurassic Coast.

Geology & Origin:

The Jurassic Coast of Dorset is a UNESCO World Heritage Site, known globally for its rich fossil record and accessible sedimentary layers. During the Jurassic, this area was submerged under a warm shallow sea, ideal for marine organisms such as echinoids. As these creatures died, they were quickly buried under sediment and fossilized in exceptional detail. The result is a rare and scientifically valuable fossil like this specimen of Pygaster.

Fossil Type & Species:

Type: Fossil Echinoid (Regular Sea Urchin)

Genus: Pygaster

Preservation: Very good, with detailed test and surface features

Features:

100% genuine, natural fossil specimen

Includes a Certificate of Authenticity

Hand-selected for display quality and geological importance

The exact fossil pictured is the one you will receive

Scale cube = 1cm: See photo for accurate sizing

Why Buy From Us? We provide only authentic, professionally prepared fossils that are carefully sourced and selected. Every specimen is accompanied by a Certificate of Authenticity, giving you complete peace of mind.

Ideal for collectors, educators, natural history enthusiasts, or as a unique decor piece that brings Earth’s ancient marine world into your space.

[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]

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]

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]

Micraster cortestudinarium Fossil Echinoid Sea Urchin, Upper Chalk, Cretaceous Kent UK | Authentic Specimen + COA

Micraster cortestudinarium Fossil Echinoid – Upper Chalk, Late Cretaceous, Kent, United Kingdom

This beautifully preserved fossil sea urchin is a specimen of Micraster cortestudinarium, one of the most iconic echinoids of the Late Cretaceous. Collected from the Upper Chalk deposits of Kent, southern England, it dates to the Turonian–Coniacian stages of the Late Cretaceous, approximately 90 to 86 million years ago.

Fossil Type & Classification:

Type: Invertebrate Fossil (Regular Echinoid / Sea Urchin)

Species: Micraster cortestudinarium

Phylum: Echinodermata

Class: Echinoidea

Order: Spatangoida

Superfamily: Spatangoidea

Family: Holasteridae

Genus: Micraster

Described by: Goldfuss, 1826 (genus authority)

Geological & Stratigraphic Details:

Location: Kent, United Kingdom

Formation: Upper Chalk Formation

Geological Stage: Turonian–Coniacian, Late Cretaceous

Age: ~90–86 million years ago

Biozone: Micraster cortestudinarium Biozone – named after this species and commonly used in European chalk stratigraphy

Depositional Environment: Warm, shallow marine shelf with low sedimentation rates and high calcium carbonate content, perfect for preserving echinoderm fossils in fine chalk matrix

Morphology & Features: This Micraster cortestudinarium specimen exhibits:

Heart-shaped, domed test with symmetrical bilateral profile

Well-defined ambulacra and petaloid pattern on the upper surface

Distinct anterior groove and central apical system

Fine surface granulation and pore rows visible depending on preservation

Preserved in light grey to creamy white chalk matrix, typical of Upper Cretaceous marine deposits

Notable: Micraster is one of the most important and widely distributed echinoid genera of the Upper Cretaceous. The species M. cortestudinarium serves as a key biostratigraphic marker for the British and European chalk and is frequently used in educational and museum contexts for illustrating Cretaceous sea life. Its abundance and diversity reflect significant evolutionary adaptations during the Cretaceous marine radiation.

Specimen Details:

Origin: Kent, UK

Species: Micraster cortestudinarium

Fossil Type: Regular Echinoid (Sea Urchin Test)

Geological Stage: Turonian–Coniacian, Late Cretaceous

Formation: Upper Chalk

Size Reference: Scale cube = 1cm (please refer to listing photos for exact dimensions)

Note: The exact fossil shown in the listing photo is the one you will receive

Authenticity & Quality: This fossil is 100% genuine, professionally sourced and naturally preserved. It includes a Certificate of Authenticity and has not been artificially enhanced.

Why Choose This Fossil? Excellent for:

Echinoid fossil collectors

Educational fossil displays and teaching

British Cretaceous marine collections

Natural history gifts and décor

Shipping & Packaging: Fossils are packed with eco-conscious materials and shipped with full tracking. Every item is handled carefully to ensure it arrives safely.

Bring home a genuine piece of Britain’s ancient sea life with this authentic Micraster cortestudinarium echinoid fossil from the Upper Chalk of Kent.

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.