#regular echinoid fossil

[uk-fossils]

Circopeltis baicheri Regular Echinoid Fossil, Ypresian Stage, Eocene France | Authentic Specimen + COA

CIRCOpeltis baicheri Regular Echinoid Fossil – Ypresian Stage, Early Eocene, Antugnac, France

This well-preserved fossil specimen is a rare Circopeltis baicheri, a regular echinoid (sea urchin) that lived during the Ypresian stage of the Early Eocene, approximately 56 to 47.8 million years ago. Found in the renowned marine fossil beds of Antugnac, southern France, this specimen exemplifies the morphological diversity and beauty of post-Paleocene echinoids.

Fossil Type & Species:

Type: Invertebrate Fossil (Regular Echinoid/Sea Urchin)

Species: Circopeltis baicheri

Phylum: Echinodermata

Class: Echinoidea

Order: Cidaroida (tentative placement)

Family: Cidaridae or related regular echinoid lineage

Described by: (Exact authority not formally cited; likely post-WWII paleontological records in European literature)

Geological & Stratigraphic Details:

Location: Antugnac, Aude, Occitanie, France

Formation: Ypresian marine marl and limestone beds

Geological Stage: Ypresian (Early Eocene)

Age: ~56–47.8 million years ago

Depositional Environment: Warm, shallow marine environment with carbonate-rich mud and fine sediment ideal for the preservation of echinoids

Biozone: Not specifically assigned; part of the broader Eocene echinoid-bearing beds of southern France

Morphology & Features: This Circopeltis baicheri specimen is noted for:

Symmetrical, globular to slightly flattened test (sea urchin shell)

Five distinct ambulacral zones with regularly spaced tubercles

No visible spines attached, though tubercle positions are preserved

Test diameter and surface ornamentation consistent with regular echinoid structure

Preserved in light beige to grey tones, sometimes with original sediment matrix attached

Notable: Circopeltis is a lesser-known but scientifically relevant genus of regular echinoids from the Eocene of France. Specimens like baicheri are rarely seen outside academic collections. Their presence helps define biodiversity recovery and reef evolution in the early Paleogene after the K-Pg mass extinction.

Specimen Details:

Origin: Antugnac, France

Species: Circopeltis baicheri

Fossil Type: Echinoid Shell (Regular Sea Urchin)

Geological Stage: Ypresian, Early Eocene

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

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

Authenticity & Quality: This fossil is professionally verified and 100% genuine. It comes with a Certificate of Authenticity. No restoration, casting, or enhancement has been applied.

Why Choose This Fossil? Ideal for:

Fossil collectors and echinoderm enthusiasts

Educational and teaching displays

Early Paleogene marine life studies

Decorative fossil art with scientific value

Shipping & Packaging: Fast, tracked shipping with secure, eco-conscious packaging. Each fossil is handled with expert care to ensure safe delivery.

Add a scientifically significant and visually elegant Circopeltis baicheri echinoid fossil to your collection from the beautiful marine beds of Antugnac, France.

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

[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]

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.