Plesiosaurus dolichodeirus Conybeare 1824.
Matrix free caudal vertebra from a Plesiosaur. In nice condition. The gravel pits around Twyning near Tewkesbury have produced some exception marine reptile material in the past.
Lower Jurassic, Lower Lias, Lower Sinemurian.
Twyning pit, Tewkesbury, Gloucestershire.
Vertebra : 4.5 x 4.5 x 3 cm.