Cryptocleidus richardsoniNo reference
Genus
Etymology
discovered and collected by Nelson M. Richardson of Dorset
Diagnosis BROWN 1981b
Member of the genus Cryptoclidus in which the distal anterior portion of the humerus is not greatly expanded; the radius has a concave anterior border, and the humeral facet is only slightly longer than the facet for the radiale; the ulna is approximately square.
Notes
It is the opinion of Mark Evans, who has seen the holotype and onlycomplete specimen, that this is a 'chimera' - a specimen made up of elements from individuals of more than one species. The description is consistent with a mixture of elements from Muraeonosaurus and Cryptocleidus. A similar specimen, and an obvious chimera, can be found in the American Museum of Natural History in New York ( a cast donated by the BM in 1905).
Specimens
| The Natural History Museum, London | |
| BMNH R 1669 | A left humerus. |
| BMNH R 1670 | Left radius and ulna |
| BMNH R 1683 | The centrum of a caudal vertebra |
| BMNH R 6696 | almost complete post-cranial skeleton, discovered and collected by Nelson M. Richardson of Dorset; 31 cervicals, 19 dorsals, 2 sacrals, 19 caudal vertebrae, pectoral girdle complete, 2 fore and one hind limb, fragmentary pubes, ischia and ilia, radius, ulna, tibia, fibula, carpal and metacarpal bones, several phalanges and ribs |
| unknown | |
| not known | Fragments |