. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . U PQ < CO. W) •co a e> .a 3 * IS <D s-a§?£ C X in m P4 ^J OSTEOLOGY OF ERYTHROSUCHUS AFRICANUS BROOM 67 fossa, and forms an oval-shaped, dorsolateral swelling that extends distally to a point justbeyond one-third down the length of the shaft. This was identified as the trochanter majorby Gregory & Camp (1918, fig. 11), but Parrish (1992, fig. 2) considered it to be a fourthtrochanter. When the various trochanters are considered in terms of probable muscleattachment sites, the identification of this as a fou
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . U PQ < CO. W) •co a e> .a 3 * IS <D s-a§?£ C X in m P4 ^J OSTEOLOGY OF ERYTHROSUCHUS AFRICANUS BROOM 67 fossa, and forms an oval-shaped, dorsolateral swelling that extends distally to a point justbeyond one-third down the length of the shaft. This was identified as the trochanter majorby Gregory & Camp (1918, fig. 11), but Parrish (1992, fig. 2) considered it to be a fourthtrochanter. When the various trochanters are considered in terms of probable muscleattachment sites, the identification of this as a fourth trochanter seems extremely fourth trochanter of more derived archosaurs is a ventral feature positioned asignificant distance from the proximal end and, like at least part of the internal trochanterof non-archosaurian diapsids, is a site for the insertion of caudifemoral the name applied to this prominence, it seems a much more satisfactoryinterpretation that this area, in Erythrosuchus africanus, was for the attachment of
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
