. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . m > COS-h oQ U *c5 & oa £ o £ . > oJ- ^ £ p4 o l m § « OQ > g £ O m t- * § ^ 60. 03o 3 CO s OSTEOLOGY OF ERYTHROSUCHUS AFRICANUS BROOM 61 much smaller, and the distal end larger, than the corresponding ends of the ulna. Thedorsal surface bears two clear ridges, possibly representing areas of muscle attachment. The ulna (Fig. 3IB) is slightly longer and more heavily built than the radius. As withthe radius, the only complete example is from the right forelimb of SAM-905. Theproximal articular surface is term
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . m > COS-h oQ U *c5 & oa £ o £ . > oJ- ^ £ p4 o l m § « OQ > g £ O m t- * § ^ 60. 03o 3 CO s OSTEOLOGY OF ERYTHROSUCHUS AFRICANUS BROOM 61 much smaller, and the distal end larger, than the corresponding ends of the ulna. Thedorsal surface bears two clear ridges, possibly representing areas of muscle attachment. The ulna (Fig. 3IB) is slightly longer and more heavily built than the radius. As withthe radius, the only complete example is from the right forelimb of SAM-905. Theproximal articular surface is terminal and there is no ossified olecranon process above surface is rugose, concave, and sub-triangular in shape. The shaft is essentially oval incross-section and apart from a low medial ridge, and a less prominent lateral ridge, it isrelatively featureless. The lateral surface of the distal end is roughened and slightly raised. The carpus and manus ofErythrosuchus africanus, as in many early archosaurs, is verypoorly known. A small spherical bone not belonging to the tarsus is among the materialbelonging to BMNH R3592 (Fig. 32A). Its surface is poorly ossi
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
