. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. "VW. Fig. 2. Eodicynodon oosthuizeni. Type specimen ROZ 1. Stereophoto- graph of skull in ventral view. Scale in cm. incised in a way not seen in other dicynodonts. In ROZ 9 an empty socket medial to the base of the right tusk, as well as what appears to be the base of a small, broken-off tooth in the corresponding position on the left side, indicate that teeth other than the tusks were present. In ROZ 11 there are two small teeth on the alveolar margin in line with the centre of the tusk. Two t
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. "VW. Fig. 2. Eodicynodon oosthuizeni. Type specimen ROZ 1. Stereophoto- graph of skull in ventral view. Scale in cm. incised in a way not seen in other dicynodonts. In ROZ 9 an empty socket medial to the base of the right tusk, as well as what appears to be the base of a small, broken-off tooth in the corresponding position on the left side, indicate that teeth other than the tusks were present. In ROZ 11 there are two small teeth on the alveolar margin in line with the centre of the tusk. Two teeth are also present medial to the tusk. On the right side one small and one larger tooth are present, but on the left side only a single tooth can be made out. Small teeth are also present on the lower jaw of ROZ 9 (see below). In the midline, where the premaxilla meets the vomerine interchoanal septum, a small portion of the premaxillary crest is preserved. In the upper part of the incompletely preserved snout of ROZ 9 the floor of a fairly extensive maxillary antrum lies behind the root of the tusk. A narrow, slit-like opening leads through the anteroventral border of the orbit into the antrum on the left side; no counterpart of this opening can be seen on the right side of the skull. The choanal opening in the palate differs from that of other dicynodonts in that a narrow, slit-like portion extends far forward to the level of the centre of the base of the tusk. Posteriorly the choana becomes shallow and wide between the pterygoids. The ventral edge of the vomerine septum is excavated as a deep trough widening posteriorly to merge with the interpterygoidal vacuity. In the roof of the trough a longitudinal suture indicates the meeting of the paired vomers. The palatine has a swollen anteroventral palatal portion that does not project far medially into the choana. The ventral surface of this portion is rugose, contrasting sharply with the smoothly finished surrounding palatal
Size: 1385px × 1803px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
