. Bulletin of the British Museum (Natural History), Geology. REVISION OF ACTINOPTERYGIAN AND COELACANTH FISHES 361 doing the curious tube in which lay the musculus adductor mandibulae has disap- peared, and, as Watson comments (1925 : 858) : " in this feature they [Elonichthys] have reached a condition which is found in all Holostei". All that is necessary now is for the maxilla to become movable, and the suspensorium to straighten, and a true Holostean state of affairs would be in existence. Simultaneously with this freeing of the pterygoid from the maxilla, a close connection betwe
. Bulletin of the British Museum (Natural History), Geology. REVISION OF ACTINOPTERYGIAN AND COELACANTH FISHES 361 doing the curious tube in which lay the musculus adductor mandibulae has disap- peared, and, as Watson comments (1925 : 858) : " in this feature they [Elonichthys] have reached a condition which is found in all Holostei". All that is necessary now is for the maxilla to become movable, and the suspensorium to straighten, and a true Holostean state of affairs would be in existence. Simultaneously with this freeing of the pterygoid from the maxilla, a close connection between the meta- pterygoid and the preopercular and hyomandibular was also established. Secondly in Elonichthys the circumorbital series is represented by a ring of bones numbering eight in Elonichthys serratus. These then cannot be identified individually with the ring of five which make up the circumorbital series of the majority of Palaeoniscoids, Cotocephalus, Canobius, Mesopoma, Rhadinichthys, etc. Thus we have a Palaeoniscoid with a series of orbital bones much larger in number than is Ptr Pa Dpt Exsc DsP LJ^r^ Ssc Sbo. Pmx + Ant Man An9. 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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