. Bulletin of the British Museum (Natural History), Geology. REVISION OF ACTINOPTERYGIAN AND COELACANTH FISHES 365 Similarities between the Bobasatraniidae (Text-fig. 77) and Platysomida include the general shape of the head and body, and the make-up of the shoulder girdle. The two sets of radials supporting the dorsal and anal fins, the axonosts of which are expanded, compressed and sinuous and in contact with one another in both forms (Westoll, 1944). The distribution of the cheek plates is similar and the pre- opercular has at least two ossifications along the preopercular canal in the Boba
. Bulletin of the British Museum (Natural History), Geology. REVISION OF ACTINOPTERYGIAN AND COELACANTH FISHES 365 Similarities between the Bobasatraniidae (Text-fig. 77) and Platysomida include the general shape of the head and body, and the make-up of the shoulder girdle. The two sets of radials supporting the dorsal and anal fins, the axonosts of which are expanded, compressed and sinuous and in contact with one another in both forms (Westoll, 1944). The distribution of the cheek plates is similar and the pre- opercular has at least two ossifications along the preopercular canal in the Bobasa- traniids and in the two Platysomids, Platysomus gibbosus (Westoll, 1941 : 47) and Platysomus parvulus (Moy-Thomas, 1939, fig. 30a). Westoll (1941 : 47) points out Ssc Exsc. Smx + Qj Pop + Sop Fig. 77. Bobasatrania mahavavica White. Skull in lateral view, after Lehman (1956). the strong resemblances shown in the shape, distribution and ornamentation of the squamation between Platysomus gibbosus and Bobasatrania. Further, the peculiar development of paired, arcuate tubules from the main lateral line in Bobastrania is also found in Platysomus gibbosus. In the cheek region the maxillary portion of Bobasatrania is easier to associate with that of the family Amphicentridae than it is with the Platysomidae, in both the Bobasatraniids and the Amphicentrids teeth being missing on the maxilla. Dissimilarities between the Platysomids and the Bobasatraniids include the. 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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