On Patricosaurus merocratus from the Cambridge Greensand.

  • Harry Govier Seeley
Date:
1887
Catalogue details

Licence: Public Domain Mark

Credit: On Patricosaurus merocratus from the Cambridge Greensand. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    Prof. Seeley said that out of many thousands of hones from the Cambridge Greensand that had passed through his hands these were the only fragments of Lizards. He thought no others were likely to be found for some time, and there was little chance of any re- mains of two Lizards occurring. If, however, one hone were to be selected as the type, he would take the femur, to which the specific name referred. With regard to Ornithodesmus, he said that it differs from all Ornithosaurs in having a horizontal neural platform running through the sacrum, and from which a continuous neural spinous ridge rises. The transverse processes and pneumatic foramina did not tend to approximate the two groups; while, so far as he was aware, the Wealden Ornithosaurs had the ventral side of the sacrum much more convex from side to side. He further pointed out that the texture and form of the sacral vertebras differed from those of known Pterodactyles.
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