Kosmoceras Jasoni Ammonite Fossil Block Upper Oxford Clay Callovian Jurassic | Manor Farm Oxford UK, Alice Purnell Collection

Description

Identification and Geological Context

This listing features a Kosmoceras Jasoni ammonite fossil block, identified from the Upper Oxford Clay and assigned to the Callovian Stage of the Jurassic. The specimen is associated with Manor Farm, Oxford, UK, and comes from the Alice Purnell Collection. Its combination of named ammonite identification, Jurassic age and Oxford Clay context makes it an appealing addition to a fossil collection, geological display or natural history cabinet.

Kosmoceras Jasoni is an ammonite fossil, representing an extinct marine cephalopod group that lived in the ancient seas of the Jurassic Period. Ammonites are especially valued by collectors because their coiled shells, chambered structure and varied ornamentation provide a distinctive record of prehistoric marine life. Their fossils are also important to geology because ammonite forms can be used to compare and organise rocks of similar age across different areas.

Upper Oxford Clay and Callovian Jurassic Context

The Upper Oxford Clay is a well-known Jurassic clay deposit associated with the Oxford region. The Callovian is a Middle Jurassic geological stage, and the Jurassic Period is part of the Mesozoic Era. Fossils from marine Jurassic deposits such as the Oxford Clay offer a direct connection to environments that existed long before the modern landscape formed. A specimen labelled with both the Upper Oxford Clay and Callovian designation provides useful geological context for display and study.

The ammonite identification gives this piece additional specialist interest for collectors who focus on Jurassic fossils, ammonites, British geology or Oxfordshire material. It can be displayed as a conversation piece, used alongside other fossils in a comparative collection, or incorporated into an educational presentation about stratigraphy, prehistoric marine ecosystems and the history of palaeontology.

Collection and Display Information

This specimen is from the Alice Purnell Collection. The locality associated with the fossil is Manor Farm, Oxford, UK. The item is supplied as an ammonite fossil block, retaining its geological presentation as a block specimen rather than being described as a loose shell or isolated polished section. Full sizing is shown in the photographs.

The photograph shows the actual specimen you will receive.

Certificate and Authenticity

This Fossil is a genuine specimen and Includes a Certificate of Authenticity lifetime guarantee generic card.

The certificate wording is included as supplied and accompanies the specimen as part of its presentation for collectors. Please review the photographs for the visible fossil detail, overall block presentation and sizing information before purchase.