Cadoceras sublaeve Ammonite Fossil – Lower Callovian Jurassic – Ashton Keynes UK – Certificate of Authenticity

Available for purchase is a genuine and well-preserved Cadoceras sublaeve ammonite fossil, dating to the Lower Callovian stage of the Middle Jurassic, approximately 166 to 164 million years ago. This specimen originates from the Kellaways Clay of Ashton Keynes/Dorset, United Kingdom — a locality known for yielding fine marine fossils from the Jurassic seas that once covered southern England.

Cadoceras is a genus of extinct ammonite cephalopods belonging to the family Cadoceratidae. C. sublaeve is notable for its compressed, involute shell and fine ribbing, making it both scientifically important and visually appealing. Ammonites like these are key biostratigraphic markers and represent an essential part of Jurassic marine ecosystems.

This carefully selected specimen comes from the well-known Alice Purnell Collection, trusted by fossil enthusiasts and collectors for its high-quality, authentic pieces. The photo shows the exact fossil you will receive, with visible scale (1cm rule/cube) provided for reference.

Geological and Species Information:

• Species: Cadoceras sublaeve
• Type: Ammonite (extinct marine cephalopod)
• Geological Age: Middle Jurassic – Lower Callovian Stage
• Formation: Kellaways Clay
• Location: Ashton Keynes / Dorset, United Kingdom

Key Features:

• 100% genuine fossil – includes a Certificate of Authenticity
• Well-preserved ammonite with distinctive shell morphology
• Sourced from the Alice Purnell Collection
• Ideal for collectors, educational displays, or gifts
• Scale rule / cube = 1cm – please refer to the photo for full sizing

Cadoceras sublaeve is a desirable species for any serious fossil collector or educator. Its age, rarity, and condition make it a meaningful piece of natural history.

Add this authentic Callovian ammonite fossil to your collection today—a beautifully preserved specimen from the ancient Jurassic seas of Britain.