. Text book of vertebrate zoology. Vertebrates; Anatomy, Comparative. Fig. 250. Diplurus longicamiatus, from Dean. A, position of the calcified air-bladder. The CcELACANTHiD^ (AcTiNiSTiA) have unossified and cycloid scales, two dorsal fins, diphycercal caudal, and ossified swim-bladder. Ccelacanthus, carboniferous of Europe and Ohio; Diplurus, trias of New Jersey. Cyclodipterini (Rhipidistia) have the vertebras partially ossi-. FlG. 251. Head of larval Polypierus, after Steindachner, from Dean. EG, external gill. fied; tail heterocercal; scales enamelled and rounded behind; a third gul
. Text book of vertebrate zoology. Vertebrates; Anatomy, Comparative. Fig. 250. Diplurus longicamiatus, from Dean. A, position of the calcified air-bladder. The CcELACANTHiD^ (AcTiNiSTiA) have unossified and cycloid scales, two dorsal fins, diphycercal caudal, and ossified swim-bladder. Ccelacanthus, carboniferous of Europe and Ohio; Diplurus, trias of New Jersey. Cyclodipterini (Rhipidistia) have the vertebras partially ossi-. FlG. 251. Head of larval Polypierus, after Steindachner, from Dean. EG, external gill. fied; tail heterocercal; scales enamelled and rounded behind; a third gular plate between the other two. Holoptychius, Devonian of Europe and America; Onychodus and Eiisihenop/eron, Devonian of America. Rhom-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
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