Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ..By Richard Lydekker .. . bit relatively very large; fronto-nasal region very wide and somewhat convex, narrowing sud-denly towards the rostrum, and facial profile forming a sudden dip in advance of orbit; parietals forming an acute ridge between supratemporal fossae. Parietal foramen placed entirely in frontals. Teeth minute, and ap-parently in some instances disappearing from the anterior part of the rostrum in the adult. Paddles (fig. 32) very similar to those of /. tenuirostris ; but the humerus relative
Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ..By Richard Lydekker .. . bit relatively very large; fronto-nasal region very wide and somewhat convex, narrowing sud-denly towards the rostrum, and facial profile forming a sudden dip in advance of orbit; parietals forming an acute ridge between supratemporal fossae. Parietal foramen placed entirely in frontals. Teeth minute, and ap-parently in some instances disappearing from the anterior part of the rostrum in the adult. Paddles (fig. 32) very similar to those of /. tenuirostris ; but the humerus relatively more slender and less expanded distally. Scapula more like that of /. platyodon. There appear no characters by which /. longirostris, Owen, can be distinguished from this species, which occurs in both the Upper and Lower Lias. The type specimens of I. longirostris, Jager, from the Upper Lias of Wurtemberg, agree with this species in the Ichthyosaurus latifrons. —Dorsal aspect of theleft 5 pectoral limb ;from the Lower Lias ofBarrow-on-Soar. h,humerus; r, radius;u, ulna; J, intermedi-um, j [After Owen.). extreme length of the rostrum, and are therefore probably specifically the same. Theapparent identity of /. longirostris with thisspecies is mentioned by Tate and Blake intheir Yorkshire Lias, p. 254 (1870). JIab. Europe (England and Wurtemberg). 1 Icones Foss. Sectiles, pi. xix. (1825). 2 Liassic Reptilia (Mon. Pal. Boc), pt. iii. p. 124 (1881). Also mentioned byMantell in his Petrifactions and their Teachings, p. 385 (1851). 3 Op. cit. p. 120.—Errorim. 1 Nova Acta Ac. Ctes. vol. xxv. pt. 2, p. 939 ct scq. (1866).5 This figure is really a reversed view of the right limb, but it is less liable tocause confusion by terming it left. 90 ICHTHYOPTEKYGT A, R. 1122. The imperfect cranium, and a mass of matrix containing a{Fig.) large portion of the vertebral column : probably from theLower Lias of Barrow-on-Soar, Leicestershire. The typespecimen. Figured by Konig in
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