Annals of the South African MuseumAnnale van die Suid-Afrikaanse Museum . CM 2. Fig. 13. Arctosaurus osborni Adams, holotype NMI G2 1971, anterior cervical vertebra in:A. Anterior view. B. Left lateral view. C. Posterior view. D. Ventral view. E. Dorsal Stereo photograph of left side, compare with B. Scale = 2,5 cm. Broken bone indicated by diagonal shading. not a prosauropod and, on the basis of the general form-of the vertebra andthe presumed presence of a pleurocoel, this specimen is tentatively regarded asTheropoda incertae sedis as listed by Steel (1970). Ischisauras cattoi Reig,
Annals of the South African MuseumAnnale van die Suid-Afrikaanse Museum . CM 2. Fig. 13. Arctosaurus osborni Adams, holotype NMI G2 1971, anterior cervical vertebra in:A. Anterior view. B. Left lateral view. C. Posterior view. D. Ventral view. E. Dorsal Stereo photograph of left side, compare with B. Scale = 2,5 cm. Broken bone indicated by diagonal shading. not a prosauropod and, on the basis of the general form-of the vertebra andthe presumed presence of a pleurocoel, this specimen is tentatively regarded asTheropoda incertae sedis as listed by Steel (1970). Ischisauras cattoi Reig, 1963 Ischisaurus cattoi Reig, 1963: 10, figs 4B, 5. Colbert, 1970: 27. Bonaparte, 19726: 673, fig. 22. Type Two incomplete skeletons from the Ischigualasto Formation (lower UpperTriassic) of Argentina. Discussion Ischisaurus is listed as an anchisaurid by Steel (1970) and as Saurischiaincertae by Bonaparte (19726: 674), who notes that the suggested affinities 1 52 ANNALS OF THE SOUTH AFRICAN MUSEUM with the Coelurosauria appears as one of the possible relationships. Romer(19
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Keywords: ., bookauthorsouthafr, bookcentury1800, bookdecade1890, bookyear1898
