. Bulletin of the British Museum (Natural History). UPPER JURASSIC PLESIOSAUROIDEA 307 as was suggested with regard to a similar structure in Cryptoclidits eurymerus, this may have housed the origin of a nuchal ligament. The occipital surface of the parietals is proportion- ally small by comparison with that of the other forms described above. Posteriorly the parietals suture with the squamosals, beneath which they are produced into posterolateral processes which play a part in the formation of the post-temporal bar. The squamosals are relatively large; the right element is complete and has th
. Bulletin of the British Museum (Natural History). UPPER JURASSIC PLESIOSAUROIDEA 307 as was suggested with regard to a similar structure in Cryptoclidits eurymerus, this may have housed the origin of a nuchal ligament. The occipital surface of the parietals is proportion- ally small by comparison with that of the other forms described above. Posteriorly the parietals suture with the squamosals, beneath which they are produced into posterolateral processes which play a part in the formation of the post-temporal bar. The squamosals are relatively large; the right element is complete and has the usual triradiate structure. Post-mortem crushing has resulted in spreading apart the ventral rami and thereby somewhat straightening the dorsal rami. The elements meet in the midline above the parietals, where the dorsal rami become unusually bulbous and form the highest part of the skull profile. In consequence, the post-temporal bar is thicker and stronger than in Cryptoclidits, Muraenosaiinis and Trkieidus. in which genera the dorsal ramus is neatly spliced into the parietal. 3 cm. Fig. 32 Kiinmerosaums langhami gen. et sp. nov. , skull roof in ventral view, , facet for articulation with paroccipita) process of the exoccipital-opisthotic; , facet for quadrate; fso, facet forsupraoccipital. Other abbreviations as in Fig. 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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