Description
Sonninia Ammonite Fossil
This 7.5-inch Sonninia ammonite fossil is presented as a large block specimen from the Middle Jurassic of Dorset, UK. It is identified as Sonninia and offers strong appeal for fossil collectors, Jurassic geology enthusiasts, natural history displays and educational collections. The substantial block format gives the specimen a distinctive presence while retaining its geological context.
Geological Identification
The specimen comes from the Inferior Oolite Group and is dated to the Middle Jurassic, specifically the Bajocian Stage and Sauzei Zone. The Inferior Oolite Group is an important Jurassic rock succession in southern England, known for its fossiliferous marine deposits. Its ammonites are especially valuable to collectors and palaeontologists because ammonite species and successive forms help document divisions within Jurassic geological time.
Sonninia is a Jurassic ammonite genus. Ammonites were extinct marine cephalopods with chambered shells, related in a broad zoological sense to modern squid, cuttlefish and nautiluses. Their fossilised shells are widely studied because they can be used in biostratigraphy, helping correlate rocks of similar age across different localities. A specimen associated with the Bajocian Sauzei Zone therefore has interest beyond its visual appeal, connecting it with a defined interval of Middle Jurassic geological history.
Locality and Geological Context
The recorded locality for this fossil is Sandford Lane Quarry, Sherborne, Dorset, UK. This locality information, together with the Inferior Oolite Group, Middle Jurassic age, Bajocian Stage and Sauzei Zone identification, makes the specimen particularly suitable for collectors who value documented geological context. Dorset is internationally recognised for its rich geological heritage, and this specimen represents a specific part of the county’s Jurassic fossil record.
Collector and Display Appeal
The large block presentation makes this Sonninia ammonite fossil a striking addition to a cabinet, study, classroom, museum-style display or themed interior. It can be used to introduce visitors and students to ammonites, Jurassic marine life, geological stages, fossil collecting and the role of biozones in understanding Earth’s past. The combination of an identified genus, a named stratigraphic zone and a recorded Dorset quarry locality provides useful talking points for both experienced collectors and newcomers to palaeontology.
Preparation and Authenticity
Your specimen was discovered by our own team members, Alister and Alison and has been cleaned, prepped and treated by Alison.
This Fossil is a genuine specimen and Includes a fully hand-signed Premium Certificate of Authenticity.
The certificate provides a useful accompaniment for display, gifting and collection records. The specimen is supplied as a 7.5-inch Sonninia ammonite fossil in a large block format, with its Middle Jurassic, Bajocian, Sauzei Zone and Inferior Oolite Group details retained as part of its identification.
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