THE FIRST REPORTED LEPTONECTES (REPTILIA: ICHTHYOSAURIA) WITH ASSOCIATED EMBRYOS, FROM SOMERSET, ENGLAND

A large but incomplete skeleton of an ichthyosaur from Street, Somerset, in the Sedgwick Museum collection is associated with two embryos. The morphology of the pelvis and humerus indicate that the adult is Leptonectes. The elongated external naris, exclusion of the maxilla from the border of the external naris, notched radius of the embryo, and large size of the adult suggest that these specimens are L. tenuirostris, a fairly common species from the Street location. The size of the head relative to the body in the small skeleton, and the size of the most complete small skeleton relative to the adult suggest that the smaller individuals are late term embryos rather than neonates