. Synopsis of the extinct Batrachia, Reptilia and Aves of North America . ion. The free fingers and half webbed toes, and thebony abdominal buckler, together with the cartilaginous nasal septum, are points of strong resemblance to Jacare(Gray including Gaeman Gray) but it differs from these creatures in the lack of bony orbit. In specific characters itdiffers from those of this genus which it most resembles—as J. nigra, in the absence of a transverse bony ridgebetween the orbits. Another feature of importance is the relation of the canine teeth of the lower jaw to the one side this to
. Synopsis of the extinct Batrachia, Reptilia and Aves of North America . ion. The free fingers and half webbed toes, and thebony abdominal buckler, together with the cartilaginous nasal septum, are points of strong resemblance to Jacare(Gray including Gaeman Gray) but it differs from these creatures in the lack of bony orbit. In specific characters itdiffers from those of this genus which it most resembles—as J. nigra, in the absence of a transverse bony ridgebetween the orbits. Another feature of importance is the relation of the canine teeth of the lower jaw to the one side this tooth is received into a notch as in Crocodiles, on the others, it enters a pit of the maxillary bone,within the border of the same as in Alligators ! This remarkable combination may be abnormal even in this species,but this cannot be now ascertained, as it rests at the present time on a single specimen only. As its affinities arerather more Alligatorial, I am disposed to anticipate that the dental arrangement of the latter animals will be mostcommon. Fig. 21. Fig.
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Keywords: ., bo, bookcentury1800, bookdecade1860, bookidsynopsisofextinc00cope
