Cadoceras sublaeve & Macrocephalites Ammonite Fossil Multi Block – Jurassic Callovian – Ashton Keynes UK – COA

Description

This listing features a striking Cadoceras sublaeve and Macrocephalites ammonite fossil multi block, discovered at Ashton Keynes, United Kingdom, and dating to the Lower Callovian stage of the Jurassic period, approximately 166 to 164 million years ago. The specimen comes from the Kellaways Clay Formation, renowned for its beautifully preserved marine fossils from the Middle Jurassic.

This rare multi-specimen block is part of the Alice Purnell Collection, known for expertly curated, high-quality fossils. The specimen pictured is the exact fossil you will receive, showcasing both ammonite species in a single natural matrix—making it a scientifically important and visually captivating piece.

Geological & Species Details:

• Species: Cadoceras sublaeve & Macrocephalites sp.
• Type: Ammonite (extinct marine cephalopods)
• Age: Jurassic (Lower Callovian Stage)
• Formation: Kellaways Clay
• Location: Ashton Keynes, United Kingdom

Key Features:

• 100% Genuine Fossil – Includes our Certificate of Authenticity.
• Multi-Species Block – Features two ammonite genera naturally preserved together.
• Excellent Preservation – Natural detail, ribbing, and shell form.
• From the Alice Purnell Collection – A trusted name in fossil curation.
• Ideal for Display, Study, or Serious Collectors
• Scale Rule / Cube = 1cm – Refer to listing photos for exact sizing.

This rare multi-fossil block represents a dynamic piece of Jurassic marine life. The combination of Cadoceras sublaeve and Macrocephalites offers insight into species diversity during the Callovian stage and makes for a fascinating and conversation-starting display specimen.

Add a scientifically important and beautifully preserved piece of Jurassic history to your collection with this Cadoceras & Macrocephalites ammonite multi block!