. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. CRANIAL STRUCTURE OF THE TITANOSUCHIAN 121 of the temporal fossa. Dorsally the paroccipital lies against the lower edge of the supraoccipital. The Jugal (J.) in ventral view shows its inner surface. Its zygomatic process is here clearly seen to extend far backwards and to form the inner part of the arch, whose outer half is formed by the overlapping zygomatic process of the squamosal. The Squamosal (Sq.) shows its posterior surface as it sweeps downwards to overlap the posterior face of the quadrate
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. CRANIAL STRUCTURE OF THE TITANOSUCHIAN 121 of the temporal fossa. Dorsally the paroccipital lies against the lower edge of the supraoccipital. The Jugal (J.) in ventral view shows its inner surface. Its zygomatic process is here clearly seen to extend far backwards and to form the inner part of the arch, whose outer half is formed by the overlapping zygomatic process of the squamosal. The Squamosal (Sq.) shows its posterior surface as it sweeps downwards to overlap the posterior face of the quadrate and quadratojugal. The Quadrate (Q.) and Quadratojugal (QJ.)- In most of the skulls studied the quadrate complex is missing. It would appear that it fits rather loosely in the notch of the squamosal in which its upper end is housed. There was apparently also little ankylosis in the joint between the paroccipital and the quadrate. The quadrate and quadratojugal form an antero-posteriorly flattened mass of bone carrying two moderate condyli on its lower edge, which lies somewhat diagonally in the skull, with the outer condyle furthest posteriorly. The quadratojugal is small and resting on a ledge above the outer quadrate condyle is applied to the outer edge of the quadrate. It lies well medial of the lateral edge of the skull and is not a bone of the lateral surface as it is in all other known Deinocephalia. d. The Skull in Occipital View (Figs. 4, 20) The occiput is vertical, but deeply concave from side to side. The strong tabular ridges bound the occiput proper laterally. Lateral to this ridge lies the posterior surface of the posttemporal arch, and the groove which in higher Therapsids functions as an auditory Fig. 4.—Anteosaurus laticeps. Sp. Nov. Holotype. 11592, Dikbome, Laingsburg. Occipital View. The possible dorso-ventral compression not corrected. The dorsal part and the quadrate-complex restored from all the other material, (x £•). Please note tha
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
