Product Overview


This listing is for a 21-inch giant rare Proplanulites laevigatus M fossil ammonite. It is presented as a significant Jurassic fossil specimen for collectors of ammonites, palaeontology, geology and natural history. The specimen is identified as Proplanulites laevigatus and is associated with Kellaways Rock, Lower Callovian, Jurassic geological context.


Identification and Geological Context


Proplanulites laevigatus is an ammonite identification from the Jurassic period. Ammonites were extinct marine cephalopods with coiled shells and are among the most recognisable fossils in geological collections. Their fossils are valued for the information they provide about ancient marine environments, Jurassic biodiversity and the changing distribution of prehistoric life through geological time.


The Lower Callovian is a Jurassic geological stage, placing this fossil within a well-defined part of the Jurassic succession. Kellaways Rock is included in the specimen’s identification and geological information. The associated location is recorded as SEMINGTON by pass, United Kingdom. These details make the fossil particularly relevant to collectors interested in British Jurassic palaeontology and regional geological material.


Collector Interest


With its stated 21-inch size, this giant fossil ammonite offers a strong visual presence for a private collection, study display, educational setting or geology-themed interior. The Proplanulites laevigatus identification gives the specimen a specific taxonomic interest, while the Lower Callovian and Kellaways Rock references add important geological context for cataloguing and research.


The specimen is suitable for collectors who appreciate named ammonite fossils, Jurassic specimens and British geological associations. It can also serve as an engaging conversation piece for anyone interested in extinct marine life, fossil identification and the history of the Earth. The product name includes the designation “M”, which is retained as part of the supplied identification.


Collection and Authenticity


From the Alice Purnell Collection


This Fossil is a genuine specimen and Includes a fully hand-signed Premium Certificate of Authenticity.


The certificate wording accompanies the fossil and provides a dedicated authenticity document for collection records, display or gifting. The supplied identification and geological details can be retained alongside the certificate as part of the specimen’s documentation.


Photography and Sizing


The photograph shows the actual specimen you will receive.


Full sizing is shown in the photographs.


Please review all photographs carefully for the specimen’s presentation, scale and visible characteristics. As the images depict the actual fossil offered in this listing, they form an important part of the product information for collectors assessing the piece for display, study or inclusion in a larger ammonite collection.


Display and Educational Use


This Jurassic Proplanulites laevigatus fossil ammonite is well suited to a fossil cabinet, geology display, museum-inspired room, classroom collection or natural history presentation. Its named identification, Lower Callovian age designation and Kellaways Rock association offer useful starting points for further study of Jurassic ammonites and British fossil localities.