Description
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.
Reviews
There are no reviews yet.