Description This listing features a Nucleolites clunicularis fossil echinoid from the Lower Cornbrash Formation, a Middle Jurassic marine limestone and marl deposit found in Bedford, United Kingdom. This echinoid species is a characteristic representative of the benthic marine fauna that thrived during the Callovian Stage of the Middle Jurassic. The fossil is well-preserved and shows the distinctive morphology typical of the species. The specimen shown in the photos is the exact one you will receive. For accurate sizing, refer to the scale cube in the images (1cm squares). Species & Classification: Species: Nucleolites clunicularis Type: Fossil Echinoid (Sea Urchin) Order: Holasteroida Family: Holasteridae Phylum: Echinodermata Geological & Stratigraphic Context: Period: Jurassic Stage: Callovian (Middle Jurassic) Formation: Lower Cornbrash Locality: Bedford, Bedfordshire, UK Depositional Environment: Shallow marine shelf environment; calm, warm, and well-oxygenated waters ideal for echinoid habitation Morphological Features: Distinctive bilateral symmetry with subpentagonal test Flattened oral surface and domed aboral surface Petaloid ambulacra and a small central peristome Adapted for infaunal lifestyle within soft marine substrates Notable Facts: Nucleolites clunicularis is a biostratigraphically useful echinoid for the Callovian of Europe. Often found in Cornbrash outcrops, it provides insight into sedimentary marine ecosystems and sea urchin evolution. Its name refers to its nesting burrow-like shape (from Latin “clunicularis”). Why Buy From Us? 100% authentic fossil, responsibly sourced Comes with a Certificate of Authenticity You will receive the exact specimen shown in the listing photos Carefully selected for scientific and display value This Nucleolites clunicularis fossil echinoid offers a fantastic glimpse into the marine life of the Jurassic period. A beautiful and scientifically significant addition to any fossil collection!
