Pleurotomaria similis Sowerby.
Matrix free Gastropod. The first whorl is out of kilter with the subsequent whorls on this individual. Unusual. A very large example of this species from Blockley.
Jurassic, Lower Pliensbachian, Ibex Zone.
Blockley Brickworks, Gloucestershire.
Gastropod : 6 cm across width of base.
