. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 2IO ANNALS OF THE SOUTH AFRICAN MUSEUM Laelaps aquilunguis from the Barnsboro marl pits of Gloucester Co., New Jersey. The generic name was preoccupied and Marsh (1877: 88) proposed Dryptosaurus to replace it. The horizon is the Greensand Navesink Formation, of Maastrich- tian age (Miller 1962: 195). Cope's figures show an astragalus that underlies only the anterior half of the tibia and has a very peculiar dorsal process. This is probably a badly eroded specimen and should be restored along the line
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 2IO ANNALS OF THE SOUTH AFRICAN MUSEUM Laelaps aquilunguis from the Barnsboro marl pits of Gloucester Co., New Jersey. The generic name was preoccupied and Marsh (1877: 88) proposed Dryptosaurus to replace it. The horizon is the Greensand Navesink Formation, of Maastrich- tian age (Miller 1962: 195). Cope's figures show an astragalus that underlies only the anterior half of the tibia and has a very peculiar dorsal process. This is probably a badly eroded specimen and should be restored along the lines of Albertosaurus. This would make the dorsal process at least 50% higher than the breadth of the astragalus. It would make the peculiar opening near the lateral base into the lateral, eroded edge of the upper horizontal groove. The ventral posterior projection below the tibia should be somewhat increased. So restored, the astragalus has a breadth of 184 mm. The ventrolateral buttress does not reach the calcanear surface and its development is between that of Alberto- saurus libratus and A. arctunguis. The facet for the calcaneum indicates that the calcaneum was nearly as reduced as in the latter species. This, therefore, seems to be an albertosauroid astragalus. An astragalus from an incomplete skeleton collected in the Hell Greek Formation (Maastrichtian) of Garfield Co., Montana in the Los Angeles County Museum collections (LACM 23849) kindly lent us by Dr Ralph Molnar is badly broken, but the lateral and medial ends are preserved along with the base of the dorsal process. It can be restored with confidence, except for the dorsal process, with a breadth of 196 mm. In anterior view the dorsal process arises 17 mm late-. 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 South African Museum. Cape Town : The
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
