Fig. 55 in The Anatomy Of Effigia Okeeffeae (Archosauria, Suchia), Theropod-Like Convergence, And The Distribution Of Related Taxa

Fig. 55. The distribution of members of Group Y in North America during the Triassic. The first occurrence (1) of members of Group Y occurs in the Middle Triassic Moenkopi Formation. The holotype of Shuvosaurus is from the Bull Canyon Formation of the Dockum Group and the holotype of Effigia is from the ''siltstone member'' of the Chinle Formation. The numbers refer to specimens in appendix 2. Mesa Red. Mb. 5 Mesa Redondo Member.