. Bulletin of the British Museum (Natural History) Geology Supplement. 112 ELOPIFORM FISHES de sosc. ot soc 10 mm Fig. 54. Osmeroides levis Woodward. Neurocranium in dorsal view. Based on , and 49903. The cranial roof is shorter in proportion to its width than in the type-species and the parietal bones are shorter than long. Perhaps the most easily recognizable differ- ence noted by Woodward concerns the ornamentation of the skull roofing bones, those of 0. levis being smooth except for a small patch of rugose ornamentation on the frontal bones above the orbit, wherea
. Bulletin of the British Museum (Natural History) Geology Supplement. 112 ELOPIFORM FISHES de sosc. ot soc 10 mm Fig. 54. Osmeroides levis Woodward. Neurocranium in dorsal view. Based on , and 49903. The cranial roof is shorter in proportion to its width than in the type-species and the parietal bones are shorter than long. Perhaps the most easily recognizable differ- ence noted by Woodward concerns the ornamentation of the skull roofing bones, those of 0. levis being smooth except for a small patch of rugose ornamentation on the frontal bones above the orbit, whereas the roofing bones of the type-species are uniformly ornamented from the mid-orbital region posteriorly. In addition to the above differences several others may be mentioned. The dermethmoid of 0. levis is considerably shorter than that of the type-species and this is related to the preorbital length which is less in 0. levis. The parasphenoid of 0. levis is relatively narrow and terminates beneath the middle of the otic region of the neurocranium, contrasting with the very broad, long parasphenoid of 0. lewesiensis. In both species the parasphenoid bears a patch of very small, rounded teeth. The size of the parasphenoid has resulted in other differences between the two species. The parasphenoid rests against the lateral ethmoid in both, but in 0. lewesiensis there is a sutural connection between these. 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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