#Baculata subzone

[uk-fossils]

4.75" Leptosphinctes davidsoni Fossil Ammonite – Baculata Subzone, Bajocian, Jurassic: Sherborne, Dorset, UK – Alice Purnell Collection

This listing presents an exceptional 4.75-inch fossil ammonite of the species Leptosphinctes davidsoni, originating from the Baculata Subzone of the Bajocian Stage (Middle Jurassic), collected from Oborne Wood Quarry, near Sherborne, Dorset, United Kingdom.

Leptosphinctes davidsoni is a species of extinct ammonite mollusc belonging to the family Perisphinctidae, a group noted for their finely ribbed, evolute shells. These ammonites lived approximately 170 million years ago in shallow marine environments teeming with life. Their shells served both as buoyancy aids and protective armour, and their fossil record helps paleontologists understand biostratigraphy and ammonite evolution.

The Baculata Subzone is part of the internationally significant Inferior Oolite Formation, which represents sedimentary deposits laid down in warm, tropical seas during the Middle Jurassic. The Sherborne area in Dorset is renowned for its outstanding preservation of ammonites and other marine fossils, making this an important site for both amateur and professional collectors.

This particular ammonite comes from the acclaimed Alice Purnell Collection, which includes many scientifically important and beautifully preserved fossil specimens. It has been professionally cleaned and prepared for both display and study, offering aesthetic appeal and educational value.

Item Details:

Species: Leptosphinctes davidsoni

Type: Fossil Ammonite

Size: Approx. 4.75 inches

Geological Age: Bajocian Stage, Middle Jurassic (~170 million years ago)

Subzone: Baculata Subzone

Formation: Inferior Oolite

Location Found: Oborne Wood Quarry, Sherborne, Dorset, UK

Provenance: Alice Purnell Fossil Collection

Scale Reference: Scale rule squares / cube = 1cm (see photo for exact sizing)

Certificate of Authenticity: Included

ACTUAL AS SEEN:

The images show the actual fossil specimen you will receive. It has been carefully hand-selected, professionally cleaned, and photographed. Due to natural variation, colours may differ slightly depending on lighting and display screens. Once this specimen is sold, the listing will be updated with a new fossil and fresh images.

100% Genuine Fossil – Professionally Prepared – Certificate of Authenticity Included – From the Esteemed Alice Purnell Collection