. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. On some New Therapsid Genera. 61 is All the teeth are simple pointed cones without serrations. The 5 incisors occupy a length of jaw of 9-5 mm. ; behind the 5th is a diastema of 4-5 mm. Then follow 3 canines all protruding from the base of the boss on the maxilla ; of these the anterior two are slightly larger than the incisors, but the third is a much larger. Fig. 6. -Lateral view of type skull of Choerosaurus dejageri gen. et sp. nov. true canine tooth. The three teeth occupy 6-5 mm.
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. On some New Therapsid Genera. 61 is All the teeth are simple pointed cones without serrations. The 5 incisors occupy a length of jaw of 9-5 mm. ; behind the 5th is a diastema of 4-5 mm. Then follow 3 canines all protruding from the base of the boss on the maxilla ; of these the anterior two are slightly larger than the incisors, but the third is a much larger. Fig. 6. -Lateral view of type skull of Choerosaurus dejageri gen. et sp. nov. true canine tooth. The three teeth occupy 6-5 mm. The first molar occurs directly behind the large canine, and the molar series occupies 20 mm. The molars decrease slightly in size posteriorly. The chief measurements of the skull are as follows :— Greatest length . 93 mm Greatest width • 33 „ Snout to front of orbit . • 54 „ Snout to pineal foramen • 82 „ Interorbital width • 15 „ Intertemporal width . 10 „ It is not possible to delimit most of the bones of the skull. The nasal is long and comparatively narrow. The frontal forms almost the whole of the upper border of the orbit, and there is a median ridge where it meets its neighbour. The parietal was probably short. The pineal foramen is small and lies just in front of the occipital crest, as in the Gorgonopsia. The jugal is a long slender rod of bone which has no upwardly ascending postorbital process. It is probable that the postorbital arch was not entire but was of the type seen in Scaloposaurus and in Bauria. The only evidence of the postorbital arch that remains is a tiny fragment attached to the matrix which fills the orbit and temporal 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 South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
