Description
This is a rare and well-preserved fossil of Cenoceras inornatum, an extinct nautiloid from the Lower Jurassic (Toarcian, ~180 million years ago), discovered in Lyme Bay, Dorset, UK.
Cenoceras is a genus of straight-sutured nautiloids that thrived in Jurassic seas. Unlike ammonites, nautiloids had a more simplistic internal chamber system and are considered ancestors of modern nautiluses. Their streamlined, coiled shells provided buoyancy control, making them active swimmers in prehistoric marine environments.
This specimen is from the famous Lyme Bay region on the Jurassic Coast, a UNESCO World Heritage site known for its rich fossil deposits. It represents a glimpse into the marine ecosystems of the Early Jurassic.
Geological Information:
- Species: Cenoceras inornatum
- Stage: Toarcian, Lower Jurassic (~180 million years ago)
- Formation: Lower Lias
- Location: Lyme Bay, Dorset, United Kingdom
- Depositional Environment: Warm, shallow Jurassic seas
Fossil Characteristics:
- Classic coiled nautiloid shell with smooth sutures
- Exceptional preservation with clear chamber structure
- Authentic Jurassic fossil from Dorset’s famous fossil sites
Key Features:
- 100% Genuine Fossil with Certificate of Authenticity
- Exceptional detail, perfect for collectors and display
- From the renowned Alice Purnell Collection
- Securely packaged for worldwide shipping
Scale Rule / Cube = 1cm – Please refer to the photos for accurate sizing.
A perfect addition to any fossil collection!








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