Rare cenoceras inornatum fossil nautilus – bajocian, jurassic – ilminster, uk – coa

This is a rare and well-preserved Cenoceras inornatum fossil nautilus from the
Bajocian Stage of the Middle Jurassic (~170 million years ago). This specimen was discovered at Hurcott Road Cutting, Ilminster, Somerset, UK, a well-known site for Jurassic marine fossils.

Cenoceras inornatum is an extinct species of nautiloid cephalopods. Unlike ammonites, which feature complex suture patterns, nautiloids like Cenoceras have a simpler internal chambered shell structure. These marine predators used their gas-filled chambers for buoyancy, allowing them to move efficiently through Jurassic seas while preying on smaller marine organisms.

GEOLOGICAL INFORMATION:

• Species: Cenoceras inornatum
• Stage: Bajocian, Middle Jurassic (~170 million years ago)
• Formation: Inferior Oolite
• Location: Hurcott Road Cutting, Ilminster, Somerset, United Kingdom
• Depositional Environment: Shallow marine seabed

FOSSIL CHARACTERISTICS:

• Well-preserved chambered nautilus shell
• Visible coiling with natural growth lines
• Authentic fossil from a historically significant Jurassic site
• Ideal for fossil collectors, museum displays, or educational study

ADDITIONAL INFORMATION:

All fossils are 100% genuine specimens and come with a Certificate of Authenticity. Scale Rule / Cube = 1cm – Please refer to the photos for accurate sizing.

This Cenoceras inornatum fossil nautilus is a fantastic addition to any collection, offering insight into the fascinating marine ecosystems of the Jurassic period.