XXX.—Notice of the discovery of a new Fossil Animal, forming a link between the Ichthyosaurus and Crocodile, together with general remarks on the Osteology of the Ichthyosaurus.

摘要: In the course of a series observations on organic remains contained in lias vicinity Bristol, my attention was particularly attracted by numerous vertebrae oviparous quadrupeds occuring that formation. Of these considerable portion obviously belonged to Ichthyosaurus; remaining, and larger division, presented forms considerably differing from each other, but which, some general analogies, I persuaded had all different places vertebral column single species; ventured even point out those places, comparison with crocodile which they bore strong resemblance, yet at same time combined so many material points difference, as prove animal were derived must have constituted separate genus. At this period, fortunate enough associate researches colleague equally able zealous, whose name stands head paper. The important illustrative specimens he placed disposal, proved aid, still more his acquaintance subject, subsequently enjoyed fullest advantage; facts now submitted Society be considered fruit inquiries prosecuted us common. A skeleton question, deficient only bones head, preserved well known collection Col. Birch, (who most liberally allowed