. Bulletin of the British Museum (Natural History), Geology. ON THE SKULL OF UL I (,() K V P1I V S 75 clearly visible (Text-fig. i), its internal opening lias been obscured by the downward displacement of the supraoccipital. The ventral view (Text-fig. 8) is based mainly upon , , and The most marked feature of the Oligvkyphus basisphenoid is that its ventro-lateral edges are drawn downwards and outwards as two thin sheets or wings of bone (), which form a partial floor to the cavum epiptericum on either side of the skull. This condition contrasts with that foun

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. Bulletin of the British Museum (Natural History), Geology. ON THE SKULL OF UL I (,() K V P1I V S 75 clearly visible (Text-fig. i), its internal opening lias been obscured by the downward displacement of the supraoccipital. The ventral view (Text-fig. 8) is based mainly upon , , and The most marked feature of the Oligvkyphus basisphenoid is that its ventro-lateral edges are drawn downwards and outwards as two thin sheets or wings of bone (), which form a partial floor to the cavum epiptericum on either side of the skull. This condition contrasts with that found in cynodonts, where the ventrolateral edges of the basisphenoid project for only a short Fig. 8. Oligokyphus sp. Reconstruction of the brain-case and hind part of the lower jaw, in ventral view. Key to lettering, p. 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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