. Synopsis of the extinct Batrachia, Reptilia and Aves of North America . er scapula indicate a gigantic animal fully equal to theknown Hadrosauri; the humeral support agrees with that bone in the latter. The dimensions are as follows:— In. Length of fragment on posterior margin, Depth proximally (greatest), distally, 4 AND AVES OF NORTH AMERICA. 93 Depth of glenoid cavity, Width anterior expansion, fractured end, In. Another fragment of an animal of dimensions similar to the last was found at the sametime and at or near the same place, (Freehold,) in Monmouth county
. Synopsis of the extinct Batrachia, Reptilia and Aves of North America . er scapula indicate a gigantic animal fully equal to theknown Hadrosauri; the humeral support agrees with that bone in the latter. The dimensions are as follows:— In. Length of fragment on posterior margin, Depth proximally (greatest), distally, 4 AND AVES OF NORTH AMERICA. 93 Depth of glenoid cavity, Width anterior expansion, fractured end, In. Another fragment of an animal of dimensions similar to the last was found at the sametime and at or near the same place, (Freehold,) in Monmouth county, New Jersey, butcannot be associated with the above described scapula, as neither the place nor time of dis-covery can be ascertained with sufficient accuracy. It appears to be the glenoid cavity ofa scapida from which the blade has been broken off, and from which a short subconicprocoracoid projects. The accompanying cut and measurements will furnish the requisiteinformation respecting it. Fig. 28. Length from a to b, b to c, d to e, e to f, The fragment may belong to Mosasaurus. Pelvis.—There is much difficulty in determining the true relations of the pelvic ele-ments of these and other Dinosauria, owing to their unusual forms, our imperfect materials,and the discrepancies between authors. Ilium.—One of our best clues is the skeleton of the Iguanodon discovered at Maid-stone, and preserved on a block of rag, which has been described and figured by ProfessorOwen. The bones mostly preserve a normal though much disturbed relation to eachother. An examination of the figure and description strongly suggests— First, that the hooked superior prolongation of the ilium is the posterior, not the an-terior, as described by Owen. This is confirmed by Owens figure and description of theilium and sacrum of the same species in Wealden Reptiles, PI. III. (Iguanodon), wherethe thick hook-like process with its abrupt descent to the acetabulum, is also posterio
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Keywords: ., bo, bookcentury1800, bookdecade1860, bookidsynopsisofextinc00cope
