. Revision of the Amphibia and Pisces of the Permian of North America. The position of the parts is dif-ferent from that which is characteristic of the Stegocephalia, where thetympanic notch, when present, is superior, owing to the much greater lengthof the suspensorium. The dental characters also distinguish the family fromthe Diadectidse. No ossicula auditus were found in the tympanic cavity. Genus OTOCCELUS Nat., vol. xxx, 1896, p. 399; Proc. Am. Phil. Soc, vol. xxxv, 1896. p. : Posterior portion of a skull with the pectoral girdle and a partof the carapace. No. 4343 Am. Mu
. Revision of the Amphibia and Pisces of the Permian of North America. The position of the parts is dif-ferent from that which is characteristic of the Stegocephalia, where thetympanic notch, when present, is superior, owing to the much greater lengthof the suspensorium. The dental characters also distinguish the family fromthe Diadectidse. No ossicula auditus were found in the tympanic cavity. Genus OTOCCELUS Nat., vol. xxx, 1896, p. 399; Proc. Am. Phil. Soc, vol. xxxv, 1896. p. : Posterior portion of a skull with the pectoral girdle and a partof the carapace. No. 4343 Am. Mus. Nat. Hist. Cope Coll. From description: Distinguished from the nearly related Conodectesby Cope as follows: Suspensorium directed anteriorly, except at free extremity; nostrils lateral. OtoccelousSuspensorium directed posteriorly; nostrils vertical Conodectes The same article gives a further description of the genus:Intercentra present. Teeth subconical. Mandible not projectingbeyond the quadrate. Clavicle expanded at both extremities, overlapping. Fig. II.— No. 4342 Am. Mus. X J^. A, upper Tdew of skull; B, lower view. Shaded portions restoredin plaster, pt, pterygoid. SYSTEMATIC REVISION 59 the episternum. ^ Scapula with a proscapular lamina. Ribs transversely-expanded, not united by suture with each other, alternating with the dermalbands. Limbs well developed. In the paper in the American Philosophical Society ProceedingsCope gives a slightly different analysis of the characters of the two genera: Mandible articulated much anterior to cranial border; nostrils opening vertically Otoccelous Cope Mandible articulated posteriorly and on line of the posterior border of the skull; nostrils opening horizontally Conodectes Cope Otoccelus mimeticus Nat., vol. xxx, 1896, p. 399; Proc. Am. Phil. See, vol. xxxv, 1896. p. 128. Type: A skull with the lower jaw in place, which is connected by a bandof matrix to a carapace and some of the limb bones.
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Keywords: ., bookcentury1900, bookdecade1910, bookidc, booksubjectpaleontology
