. Bulletin of the British Museum (Natural History), Geology. FISHES FROM THE LEBANON 235 and a narrower posterior part ending in a pair of delicate splints which extend back beneath the frontals. At the front of the dorsal surface of the mesethmoid there is a median depression which probably housed ligaments to the ascending processes of the premaxillae. On the underside of the bone there is a pair of vertical laminae of peri- chondral bone (equivalent to the capsular ethmoids of Weitzman) which splay out anteriorly and end at the widest part of the bone. In front of this point, below the broa
. Bulletin of the British Museum (Natural History), Geology. FISHES FROM THE LEBANON 235 and a narrower posterior part ending in a pair of delicate splints which extend back beneath the frontals. At the front of the dorsal surface of the mesethmoid there is a median depression which probably housed ligaments to the ascending processes of the premaxillae. On the underside of the bone there is a pair of vertical laminae of peri- chondral bone (equivalent to the capsular ethmoids of Weitzman) which splay out anteriorly and end at the widest part of the bone. In front of this point, below the broad anterior part of the bone, there are only traces of granular endochondral bone, and the foremost part of the ethmoid cartilage was apparently unossified. The vertical laminae of perichondral bone are joined ventrally by a horizontal lamina, equivalent to the ventral ethmoid of Weitzman. The lateral ethmoids (Le, Fig. 21) are quite heavily ossified but are normally hidden below the large 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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