. Breviora. 1968 CHANARES DICYNODONT FAUNA. Figure 3. Clianaria platyceps, type specimen. Lateral view of skull, x V3 (for abbreviations, see p. 26). the intertemporal bar, the occiput is wide but low, and the tem- poral opening is short. In all these characteristics, Chanaria clearly belongs to the family Stahleckeriidae. Bonaparte (1966a) has since disagreed with my proposed classi- fication of the Triassic dicynodonts into separate families. He be- lieves that these forms are very uniform in structure, and that they are monophyletic in origin. Though I do not agree with either of these beli
. Breviora. 1968 CHANARES DICYNODONT FAUNA. Figure 3. Clianaria platyceps, type specimen. Lateral view of skull, x V3 (for abbreviations, see p. 26). the intertemporal bar, the occiput is wide but low, and the tem- poral opening is short. In all these characteristics, Chanaria clearly belongs to the family Stahleckeriidae. Bonaparte (1966a) has since disagreed with my proposed classi- fication of the Triassic dicynodonts into separate families. He be- lieves that these forms are very uniform in structure, and that they are monophyletic in origin. Though I do not agree with either of these beliefs, Bonaparte's views and my own are, in the absence of knowledge of the Permian ancestry of the Triassic forms, sub- jective views of equal validity. The truth will emerge only from further work on the dicynodonts of the late Permian and early Triassic, and further discussion on these alternative classifications may be postponed until relevant material has been found and studied. DlNODONTOSAURUS BREVIROSTRIS Sp. HOV. Holotype. No. 65-XI-14-4 Museo de la Plata, La Plata, Argen- tina, skull. Collected by the 1964-1965 expedition of the Museo de la Plata and the Museum of Comparative Zoology. Horizon and locality. From an exposure in the Triassic Chan- ares Formation about 6 miles east of the point where the Chanares River emerges into the Campo de Talampaya, in western La Rioja Province, 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
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