. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Pareiasaurian Studies.—Part VI. 303 view there is a distinct lip or rampart which lies considerably below or lateral to the surface of the pubo-ischiadic plate. The edge of this rampart is roughened, and it would appear that in life cartilage was attached to it, forming a kind of cartilaginous prepubis. The dorsal opening of the pubic foramen is dorso-ventrally oblique, and pierces the upper posterior corner of the pubis between the pubo-iliac and pubo-ischiadic sutures. Ventrally it opens just behin
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Pareiasaurian Studies.—Part VI. 303 view there is a distinct lip or rampart which lies considerably below or lateral to the surface of the pubo-ischiadic plate. The edge of this rampart is roughened, and it would appear that in life cartilage was attached to it, forming a kind of cartilaginous prepubis. The dorsal opening of the pubic foramen is dorso-ventrally oblique, and pierces the upper posterior corner of the pubis between the pubo-iliac and pubo-ischiadic sutures. Ventrally it opens just behind the lip or rampart of the pubis. This is in general the shape of the anterior pubic border. There are, however, considerable differences amongst the various Pareiasaurs. In some of the broad forms the whole anterior border is turned downwards, forming in anterior view a continuous straight rounded edge. In other broad forms this down- wardly turned lip or rampart does not continue right up to the symphysis, but is separated from a distinct symphyseal tongue by a notch ; whilst in an isolated form the medial edge of the lip forms a medially directed process, which is apparently formed by a distinct ossicle separated from the pubis by a suture. This appears to be a distinct prepubis (fig. 4). In the narrow forms the lip is separated from the very strong symphyseal tongue, which in one form is large with an antero-ventrally directed dorsal Text-fig. 4.—Ventral view of the pelvis to show the prepubic processes. In- dent. X TV (9116.) Limb (figs. 5, 6). Taken as a whole the Pareiasaur limb is short, massive, and clumsy. The pelvis hangs between the two limbs, which are permanently bent at the knee, and are directed outwards with more or less obliquely outwardly directed propodials. The limb is composed of five segments. The first segment—the propodial—consists of one element—the femur. Its proximal end is longer than high, and consequently its adjustment in the mo
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
