. Bulletin of the British Museum (Natural History), Geology. PALAEONISCOID FISHES AND THE CHONDROSTEI 165 Diagnosis. Fishes not exceeding 11 cm. in total length ; body fusiform, length of head contained almost five times and greatest depth of body just over four times in total body length. Dorsal fin shorter based than anal fin ; two ridge scales in front of dorsal. Fossa present in skull roof at junction of parietal, frontal and dermop- terotic. Syntypes. Four specimens in the Narodni Museum, Prague, from the Upper Carboniferous of Kounova, Czechoslovakia. Material. Photographs and casts of s
. Bulletin of the British Museum (Natural History), Geology. PALAEONISCOID FISHES AND THE CHONDROSTEI 165 Diagnosis. Fishes not exceeding 11 cm. in total length ; body fusiform, length of head contained almost five times and greatest depth of body just over four times in total body length. Dorsal fin shorter based than anal fin ; two ridge scales in front of dorsal. Fossa present in skull roof at junction of parietal, frontal and dermop- terotic. Syntypes. Four specimens in the Narodni Museum, Prague, from the Upper Carboniferous of Kounova, Czechoslovakia. Material. Photographs and casts of syntypes, and no. 47491 in the British Museum (Natural History). Description. The skull. The bones of the skull and course of the sensory canals are shown in Text-fig. 16. The skull is short and high with an almost vertical suspensorium while the snout is bluntly rounded. The suprascapulars are large, stout and meet in the midline anteriorly. The extrascapular series, consisting of the Exsc. Fig. 16. Sphaerolepis kounoviensis Fric. Reconstruction of skull in lateral 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 British Museum (Natural History). London : BM(NH)
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