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A, anterior; B, anterodorsal; C, posterior; D, dorsal; E, ventral; F, left lateral; and G, right lateral views, UA 9600 (holotype). H, anterior; and I, anterodorsal views of atlas vertebra, FMNH PR 2512. Note scanning artifacts on UA 9600 most easily traceable as horizontal lines in D and E, and as vertical lines in F and G.
