Description
Orthaspidoceras Llanerianum Ammonite Fossil
This 3.5-inch Orthaspidoceras llanerianum is an ammonite fossil identified as a microconch and associated with the Kimmeridgian stage of the Jurassic. The specimen is from La Rochelle, France, and comes from the Alice Purnell Collection. Its combination of named identification, Jurassic age designation and microconch classification makes it a distinctive addition to an ammonite fossil display, natural history collection or geology study selection.
Identification and Geological Context
Orthaspidoceras llanerianum belongs to the ammonites, an extinct group of marine cephalopods known for their coiled shells. Ammonite fossils are valued by collectors because they preserve evidence of ancient marine life while also displaying features that are important to palaeontological identification, including shell form, ornamentation and chamber arrangement when visible.
The Kimmeridgian is a recognised stage within the Jurassic Period. Jurassic ammonites are widely studied as index fossils because different forms appeared and became distributed during particular intervals of geological time. This makes identified ammonites useful not only as display pieces, but also as educational examples for learning about fossil classification, biostratigraphy and the history of marine ecosystems.
Microconch Identification
The term microconch refers to the smaller morph in ammonite species that displayed sexual dimorphism. In many dimorphic ammonite groups, the microconch is distinguished from the larger macroconch form. This terminology is an important part of ammonite palaeontology and gives the specimen added interest for collectors who focus on ammonite morphology, taxonomy and Jurassic marine fossils.
Orthaspidoceras llanerianum is presented here with its supplied identification and should be displayed as a named Jurassic ammonite fossil. It is suitable for a fossil cabinet, geology classroom, museum-style arrangement, ammonite collection or educational discussion of Jurassic cephalopods.
Collection and Location
This fossil is from the Alice Purnell Collection. The listed location is La Rochelle, France. The combination of a named ammonite identification and collection association provides useful context for cataloguing and presenting the specimen alongside other Jurassic fossils, ammonites and palaeontological material.
Size and Photographs
The specimen measures 3.5 inches as stated in the product information. Full sizing is shown in the photographs. The photograph shows the actual specimen you will receive. Please use the photographs to appreciate the specimen’s visible form, surface features and presentation before purchase.
Certificate of Authenticity
This Fossil is a genuine specimen and Includes a Certificate of Authenticity lifetime guarantee generic card.
Display and Collector Interest
This Orthaspidoceras llanerianum microconch is well suited to collectors seeking an identified ammonite fossil with Jurassic and Kimmeridgian relevance. It can be incorporated into a collection focused on marine fossils, ammonite diversity, Jurassic palaeontology or the study of fossil cephalopods. It also provides an accessible visual example of how palaeontologists use taxonomic names and morphological terms to classify fossil organisms.
The specimen may be displayed with its certificate and collection information as part of a labelled fossil cabinet. Its named identification, 3.5-inch size, French locality reference and microconch designation make it suitable for collectors, educators, students and anyone interested in the geological record of ancient marine life.
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