Description
Genuine Witchellia cf. albidus Ammonite Fossil
This listing is for a genuine Witchellia cf. albidus ammonite fossil from the Inferior Oolite Group of Dorset, UK. It comes from groundworks north of Upton Lane and dates to the Bajocian Stage of the Middle Jurassic, specifically the laeviuscula Subzone. This makes it a carefully labelled British Jurassic ammonite with excellent geological and collector interest.
The “cf.” in the identification means the specimen compares closely with Witchellia albidus, while allowing for natural variation, preservation, or incomplete diagnostic features. This is a responsible palaeontological identification and is especially appreciated by collectors who value accurate fossil labelling. The fossil is a carefully chosen piece, and the photograph shows the actual specimen you will receive. Full sizing can be seen in the photo.
Geology, Age and Dorset Locality
This ammonite comes from the Inferior Oolite Group, a well-known Middle Jurassic rock unit found across parts of Dorset and southern England. The Inferior Oolite is made up of limestones, sandy limestones, marls, shell beds, iron-rich layers, and oolitic sediments that were deposited in warm, shallow marine environments.
The fossil is Bajocian in age, approximately 170 to 168 million years old. The Bajocian was an important period in ammonite evolution, with many distinctive ammonite groups appearing and diversifying across the shallow seas of Europe. Ammonites from this stage are highly valued by palaeontologists because their rapid evolution makes them useful for dating and correlating Jurassic marine rock layers.
The groundworks north of Upton Lane, Dorset exposed fossil-bearing Middle Jurassic material associated with the Inferior Oolite Group. Fossils from such localised horizons are especially desirable because they preserve detailed evidence of Dorset’s ancient marine environments and offer collectors a specimen with more precise provenance than a general regional label.
laeviuscula Subzone and Stratigraphic Interest
This fossil is attributed to the laeviuscula Subzone, a refined ammonite biostratigraphic division within the Bajocian. Ammonite zones and subzones are used to divide geological time into narrower intervals based on characteristic ammonite faunas. This makes specimens such as Witchellia cf. albidus particularly interesting because they are not only attractive fossils but also useful markers of Middle Jurassic time.
The laeviuscula Subzone is associated with classic Bajocian ammonite successions in Britain and western Europe. A fossil with this level of stratigraphic information has added appeal for collectors, students, and natural history enthusiasts who appreciate scientifically labelled specimens with accurate geological context.
Fossil Type and Genus Details
Witchellia was an ammonite, an extinct marine cephalopod related to modern squid, cuttlefish, octopus, and nautilus. Like other ammonites, it had a coiled external shell divided into internal chambers. The living animal occupied the final body chamber, while the earlier chambers helped regulate buoyancy as it moved through the Jurassic sea.
Witchellia ammonites are generally recognised by their planispiral coiled shells, defined whorl development, and ribbed ornament. Depending on growth stage and preservation, specimens may show fine to moderately strong ribs, a compressed to moderately inflated shell profile, and a distinctive whorl shape. These features give Witchellia strong display appeal while also making it an important part of Middle Jurassic ammonite studies.
Scientific classification places Witchellia within Phylum Mollusca, Class Cephalopoda, Subclass Ammonoidea, Order Ammonitida, Superfamily Hammatoceratoidea, and Family Sonniniidae. The genus is closely associated with Bajocian ammonite faunas and is important for understanding the diversity and evolution of Middle Jurassic cephalopods.
Inferior Oolite Marine Environment
During the Bajocian, the area now known as Dorset lay beneath warm, shallow seas on the margin of an ancient European marine shelf. The sediments of the Inferior Oolite Group record these conditions through carbonate-rich deposits, oolitic limestones, shell beds, sandy layers, and marine muds.
Witchellia cf. albidus would have lived in this marine environment as part of a diverse Jurassic ecosystem. The same seas supported belemnites, bivalves, brachiopods, gastropods, echinoids, crustaceans, fish, and marine reptiles. As an ammonite, Witchellia used its chambered shell for buoyancy control, allowing it to move through the water column while feeding and avoiding predators.
Collectible British Jurassic Ammonite
This Witchellia cf. albidus ammonite fossil is an excellent specimen for collectors interested in British fossils, Dorset geology, Middle Jurassic ammonites, Inferior Oolite fossils, Bajocian biostratigraphy, and scientifically labelled natural history specimens. Its Dorset locality, laeviuscula Subzone attribution, comparative species identification, and classic ammonite form give it strong display and educational appeal.
This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The photograph shows the actual fossil you will receive, making this a carefully selected and accurately represented specimen from the Middle Jurassic marine deposits north of Upton Lane, Dorset, UK.
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