. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 246 ANNALS OF THE SOUTH AFRICAN MUSEUM Antero-dorsally the laterosphenoid articulates with the internal surface of the frontal, and also extends laterally and probably just touches the postorbital. Postero-dorsally the laterosphenoid unites with the internal surface of the parietal. The laterosphenoid-quadrate suture runs perpendicularly down to the foramen which transmitted the trigeminal nerve. Ventrally the laterosphenoid meets the quadrate ramus of the pterygoid. Otic region Nothing can be said o
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 246 ANNALS OF THE SOUTH AFRICAN MUSEUM Antero-dorsally the laterosphenoid articulates with the internal surface of the frontal, and also extends laterally and probably just touches the postorbital. Postero-dorsally the laterosphenoid unites with the internal surface of the parietal. The laterosphenoid-quadrate suture runs perpendicularly down to the foramen which transmitted the trigeminal nerve. Ventrally the laterosphenoid meets the quadrate ramus of the pterygoid. Otic region Nothing can be said of either the prootic or epiotic, since these elements are concealed by the quadrate, parietal and supraoccipital. The opisthotic forms the large, horizontally directed paroccipital process to which the exoccipital is fused. Medially it fuses with the supraoccipital and dorsally it is sutured to the squamosal. Internal to the quadrate, fragments of bone can be seen and very probably the otic elements were crushed during preservation due to compression of the skull in this region. The stapes is also unknown. THE LOWER JAW (Fig. 7) Both mandibular rami of the type specimen are well preserved although slightly distorted. The middle area of the right has been restored, and the articular region is firmly attached to the condylar surface of the quadrate. The articular region of the left ramus is incompletely preserved. In K4639, the rear halves of both rami are visible although the posterior margin is incomplete in both cases. Dentary This is the largest of the lower jaw elements and externally forms the lower half of the mandible. It is sculptured in the form of numerous small, shallow pits which grade into slit-like markings, more sparsely arranged, farther back. A. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
