. Synopsis of the extinct Batrachia, Reptilia and Aves of North America . he united pubes. Theglenoid surface of the pubes is a sigmoid, while that of the ischia is regularly convex. The articulation of the iliumhas been exclusively with the former. Of the pleurapophysial portion of the two arches nothing appears to be preserved except two lateral symmetricallong bones. One was found imbedded in the mass carrying the pelvic arch, and they articulate well with the pubes;but the articular extremity is too short to articulate with ischia at the same time. Though they resemble the inferiorview of
. Synopsis of the extinct Batrachia, Reptilia and Aves of North America . he united pubes. Theglenoid surface of the pubes is a sigmoid, while that of the ischia is regularly convex. The articulation of the iliumhas been exclusively with the former. Of the pleurapophysial portion of the two arches nothing appears to be preserved except two lateral symmetricallong bones. One was found imbedded in the mass carrying the pelvic arch, and they articulate well with the pubes;but the articular extremity is too short to articulate with ischia at the same time. Though they resemble the inferiorview of the procoracoids, they represent the ilia of Plesiosaurus. The head is subdiscoid, rather flat, slightly pro-jecting excentrically with a ligamentous pit. The articular surface is very oblique to the axis of the shaft, and isseparated from the surface by a marked angle all around. Nothing like a trochanteric ridge is apparent in this bone. Length in middle of curve. Diameter at head, distally on curve, straight. In. Lin 9 9 3 3 6 4 AND AYES OF NORTH AMERICA. 53 Fig. Fix. 9. Fig. 10.
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Keywords: ., bo, bookcentury1800, bookdecade1860, bookidsynopsisofextinc00cope
