. Annual report. New York State Museum; Science; Science. DEVONIC FISHES OF THE NEW YORK FORMATIONS 3 I Orders ANASF»IDA and OSXEOSXRACI Neither of these orders is represented in the fossiliferous horizons of New York State. A single species belonging to Euphanerops longaevus Woodward is known from the Upper Devonic of Scaumenac bay, Quebec, and the Osteostraci are represented by four species of Cepha- laspis [text fig. 5], two from the Lower and two from the Upper Devonic of British America,. It has been claimed by Professor William Patten that the genus Cephalaspis is provided with a "f
. Annual report. New York State Museum; Science; Science. DEVONIC FISHES OF THE NEW YORK FORMATIONS 3 I Orders ANASF»IDA and OSXEOSXRACI Neither of these orders is represented in the fossiliferous horizons of New York State. A single species belonging to Euphanerops longaevus Woodward is known from the Upper Devonic of Scaumenac bay, Quebec, and the Osteostraci are represented by four species of Cepha- laspis [text fig. 5], two from the Lower and two from the Upper Devonic of British America,. It has been claimed by Professor William Patten that the genus Cephalaspis is provided with a "fringe of jointed and movable appendages (25 to 30 pairs) along the ventral margin of the trunk," the structures com- monly known as rnarginal scales being interpreted by him as swimming appendages or " fringing ; ' Regarding these fulcralike scales it is even stated by this author that " there is little doubt that they are the antecedents of the lateral fold of vertebrates," although it is elsewhere remarked in the same paper that "whatever their significance may be, there is apparently nothing known in true fishes that is exactly comparable with ;^ The original specimens upon which these conclusions were based were afterwards reexamined by Dr Gaskell, who declares positively that they display nothing in the nature of paired appendages,^ and Dr Otto Jaekel of Berlin is equally emphatic in his denial that the marginal scales of this genus are not precisely what their name implies.'' Hence it would appear that the antecedents of the lateral fold of vertebrates must be sought elsewhere than in the structures to which Professor Patten has called attention. "On the Structure and Classification of the I'remataspidae. Am. Nat. [902. 36: 388. ^On the Structure of the Pteraspidae and Cephalaspidae. Am. Nat. 1903. 37: 827-65. & Physiol. Jour. 1903. 37: 198. ?tZeitschr. deutsch. geol. Gesellsch. 1903. 55: 84; cf. also Sc
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