Post by grrraaahhh on Nov 14, 2011 14:51:07 GMT -9
Agriotherium africanum. The ancestors of this enormous bear (apx 750 kg!) entered Africa from Eurasia around 6 million years ago and rapidly spread southwards to the Cape. Illustration by Cedric Hunter. From: Hendey, Q.B. (1982) Langebaanweg, a Record of Past Life, published by the South African Museum.
Last Edit: Jan 23, 2013 19:33:36 GMT -9 by grrraaahhh
Post by grrraaahhh on Nov 14, 2011 14:51:50 GMT -9
Agriotherium Africanum has been described to resemble its Pleistocene cousin the short faced bear which were found in both North and South America. In so far as skeleton comparisons went between these two species of prehistoric bears - forum members will find the following interesting:
In overall size, male A.africanum skulls were found to be intermediate between male and female A.simus skulls. The post cranial bones of A.africanum were found to be similar to A.simus although they differ in some morphological details. In actual size, the bones of A.africanum compare closely with those of A.simus females (e.g., Potter Creek Cave sample). It is important to note that the skeleton of A.africanum is less well represented then those of A.simus and consequently can not be examined in as much detail.
Post by grrraaahhh on Feb 23, 2012 10:22:00 GMT -9
Table 4 Ulna Measurement (mm) Data
Length: 252 + Maximum breadth of olecranon: 51 Transverse diameter at coronoid process: 65 Breadth of coronoid process at anterior end of radial notch: 40.5 Transverse diameter at mid-brachialis insertion: 28.7 Diameter of brachialis scar (proximal-distal): 23 Diameter of brachialis scar (ventral-dorsal): 17.5 Transverse diameter at mid-shaft: 27 Dorso-ventral diameter at mid-shaft: 47 Height of radial arch (arc): 41 Maximal height (AP) at coronoid process* : 85 Distance from distal end of coronoid articular edge to tip of olecranon: 122.5