Researches on the Structure, Organization, and Classification of the Fossil Reptilia VII Further Observations on Pareiasaurus . Cranial Armature, Pareiasaurus 18. Fig. 1. The skull of Pareiasaurus Baini, seen from above, showing the werlge-likeform of the head with a flattened crown and oblique cheeks; the sculptureof the bones, the parietal foramen, the position of the orbits in the middlelength of the side of the head, and the anterior nares divided by the inter-nasal septum of the nasal and premaxillary bones, which bulges forwardbetween them ; one-third natural size. Fig. 2. Out
Researches on the Structure, Organization, and Classification of the Fossil Reptilia VII Further Observations on Pareiasaurus . Cranial Armature, Pareiasaurus 18. Fig. 1. The skull of Pareiasaurus Baini, seen from above, showing the werlge-likeform of the head with a flattened crown and oblique cheeks; the sculptureof the bones, the parietal foramen, the position of the orbits in the middlelength of the side of the head, and the anterior nares divided by the inter-nasal septum of the nasal and premaxillary bones, which bulges forwardbetween them ; one-third natural size. Fig. 2. Outline of the posterior occipital aspect of the skull, showing the occipitalcondyle oc, with the foramen magnum, and lateral vacuities at the sides ofthe brain case. The position of the cheeks diverging and descending is seento give an appearance of depth to the side of the head. •n aa td. PLATE 19. Fig. 1. Palatal aspect of the skull of Pareiasaurus Baini, showing the positions ofthe teeth in the premaxillary and maxillary bones. The vomerine, palatine,and pterygoid bones are covered with double parallel rows of teeth, whichconverge backwards towards the vacuity of the palato-nares. is thebase of the occipital condyle; c. the condyle of the quadrate bone; one-third natural size. Fig. 2. External aspect of a maxillary tooth from the Tamboer specimen ; naturalsize. Fig. 3 and fig. 4 are from the jaws of Pareiasaurus Russouun from the top of theNieuwveldt range, midway between Klip-fontein and Fraserberg; naturalsize. Fig. 3 is the external aspect of a maxillary tooth, with the denticles nearly on thesame level, and the tooth flat; natural size. Fig. 4 is a mandibular tooth from the same specimen seen from the inner side of thejaw, showing the radiating denticles. A successional tooth of similarcharacter is seen below; natural size.
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Keywords: ., bookauthorseeleyh, bookcentury1800, bookdecade1890, bookyear1892
