. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. GALESAUKID^!. 69 root of the lower. The four premaxillary teeth remain, hut there are four cheek-teeth in the left maxilla. In the description the narial aperture is stated to he single, but it is clearly divided in the same manner as in Lyeosawus. On both sides the temporal arcade shows a longitudinal division indicating that it is composed of an upper and a lower moiety. The lower arcade seems to be undoubtedly a quadrato-maxillary one (as
. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. GALESAUKID^!. 69 root of the lower. The four premaxillary teeth remain, hut there are four cheek-teeth in the left maxilla. In the description the narial aperture is stated to he single, but it is clearly divided in the same manner as in Lyeosawus. On both sides the temporal arcade shows a longitudinal division indicating that it is composed of an upper and a lower moiety. The lower arcade seems to be undoubtedly a quadrato-maxillary one (as in Sjphenodon), while the upper one would seem to be a squamoso-maxillary one (as in the Dicynodontia, p. 39). The constituent elements of the lower arcade cannot be determined ; but the relations of the upper one confirm Cope's conclusion that the postorbito-squamosal arcade of Sjohenoclon is absent in this suborder. A figure of this skull is given in the accompanying woodcut. By exchange with the Blomfontein Museum, 1884. Pig. Galesaurus planiceps.—Left lateral aspect of the skull, f. a, an upper cheek- tooth, and b an incisive tooth, f. From the Karoo system of South Africa. R. 511 a. The imperfect skull; from the Orange Free State. The contour of the facial region is well preserved, but the narial septum is broken away. Four posterior cheek- teeth remain on the left side, five cheek-teeth being shown in the opposite jaw. On the right side the lower (quad- rato-maxillary) moiety of the compound temporal arcade is preserved. Neither in this nor in the preceding speci- men can it be determined whether the quadrate was perforated. By exchange with the Blomfontein Museum, 1884. E. 845. Fragment of the middle region of the skull; from the (Fig.) Orange Free State. A cast is shown of the anterior. 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 n
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Keywords: ., bookauthorlydekkerrichard184919, bookcentury1800, bookdecade1880
