Fossil Jaw Section in Block – Triassic Westbury Formation – Aust Cliff Bristol UK – Genuine with Certificate

Description

A scientifically fascinating Fossil Jaw Section embedded in matrix, collected from the iconic fish, reptile, and coprolite bed at Aust Cliff, near Bristol, UK. This unique specimen was discovered by our team members Alister and Alison on 07 April 2025, and has been meticulously cleaned, prepped, and treated by Alison.

The fossil originates from the Westbury Formation, part of the Penarth Group, and dates to the Upper Triassic Period, specifically the Rhaetian Stage (~208–201 million years ago). The fossil-rich Aust Cliff site is internationally recognised for its preservation of Late Triassic vertebrate remains, including fish, early marine reptiles, and other jawed vertebrates.

This block features a fragmentary but clearly defined jaw section, which may derive from a marine reptile (such as a placodont or early ichthyosaur) or from a predatory fish like Saurichthys. It showcases distinct bone structure, and depending on preservation, may exhibit tooth sockets or partial dentition. The block offers an important glimpse into the biodiversity of Britain’s prehistoric marine environments.

This is a genuine, one-of-a-kind fossil, professionally photographed with a 1 cm scale cube. The photo displays the exact specimen you will receive.

Geological & Taxonomic Information:

• Fossil Type: Jaw section (bone fragment in block)
• Possible Origin: Marine reptile or predatory fish (e.g. Saurichthys)
• Geological Period: Triassic
• Stage: Rhaetian (Upper Triassic)
• Formation: Westbury Formation
• Group: Penarth Group
• Location: Aust Cliff, Bristol, United Kingdom
• Depositional Environment: Low-energy marine to estuarine setting; vertebrate-rich horizon
• Morphological Features: Elongated jaw bone fragment, possible tooth sockets, preserved in claystone matrix
• Notable Zone: Classic Aust Cliff vertebrate and coprolite bed

What You Receive:

• The exact fossil specimen shown in the listing photo
• A Certificate of Authenticity verifying it is 100% genuine
• Safe, secure packaging and tracked delivery

An excellent addition to any fossil collection, this specimen represents a rare piece of Britain’s Triassic paleoheritage, ideal for display, study, or education.

Note: All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity. Scale cube = 1cm. Please see the image for accurate sizing.