. Revision of the Amphibia and Pisces of the Permian of North America. an hardly be in doubt. The superiorposition of eyes and nostrils shows that it lay nearly submerged until someprey came within reach, when a sudden rush with its very capacious mouthextended ended in the engulfment of the prey. The coprolites show remainsof fish and amphibian bones (Neumeyer, 63). Parioxys ferricolus and Anisodex imbricarius Cope. So little is known of these forms that the discussion of their morphologymust await future discoveries. Genus ACHELOMA cumminsi Cope (page 34). (Plate 11.) Character
. Revision of the Amphibia and Pisces of the Permian of North America. an hardly be in doubt. The superiorposition of eyes and nostrils shows that it lay nearly submerged until someprey came within reach, when a sudden rush with its very capacious mouthextended ended in the engulfment of the prey. The coprolites show remainsof fish and amphibian bones (Neumeyer, 63). Parioxys ferricolus and Anisodex imbricarius Cope. So little is known of these forms that the discussion of their morphologymust await future discoveries. Genus ACHELOMA cumminsi Cope (page 34). (Plate 11.) Characteristic specimen: The type No. 4205 Am. Mus. The original description of this genus and species is good; a few pointsare added. The skull is incomplete, and there is considerable plaster in thefacial and postorbital regions, where vacuities occur in Trematops Williston,which the skull resembles in many respects; but the two are distinct. Theskull is higher in the cranial region than Eryops, and there is a decidedpreorbital contraction. The sutures can not be made D ^^^ijE ^ ^^^¥ G Fig. 34.—Acheloma cumminsi. No. 4205 Am. Mus. X ^• A. Lateral view of right scapula. B. Anterior view of same. C. Lateral view of four dorsal vertebrse. D. Diagrammatic anterior vievi of a dorsal vertebra. E. Ulna. F. Radius. G. Anterior view of right Posterior edge of same. The scapula presents a most remarkable appearance, which attractedCopes attention (see original description). In the present position of thescapulae, which is evidently a little too high, the blade is set at an angle of 45°to the vertical and overlies the back; the coracoid portion is also at an angleof 45° from the vertical, so that the two parts of the scapula are at rightangles to each other (see fig. 34, A and b). The blade is elongate and ratherwide; the posterior end is thick and shows extensive cartilaginous attach-ment. The upper edge is thin and the lower thick and rounded. From apoint near the middl
Size: 2442px × 1023px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidc, booksubjectpaleontology
