The Proceedings of the Eighth International Conference on Creationism (2018)

Troodontidae; 2) non-coelurosaur theropods, Tyrannosauroidea, “basal” Coelurosauria, Alvarezsauroidea, Ornithomimosauria, Oviraptorosauria, Therizinosauria, and a scansoriopterygid ( Epidexipteryx ); 3) non-avian Pygostylia; and 4) Aves + Limenavis + Iaceornis . Dromaeosaurid and “basal” avialan ranges ordinate closely, although they are still mainly distinct, for PC 1 (2a and 2b, respectively, in Fig. 38). Troodontids (2c, Fig. 38) mainly ordinate closely between dromaeosaurids and “basal” avialans, but some troodontids ( Byronosaurus and Zanabazar ) overlap with the “basal” avialan cluster, and anchiornithids ( Pedopenna and Yixianosaurus ), which are probably “basal” avialans, are indistinguishable from dromaeosaurids for PC 1. These paravian taxa are spatially separated from alvarezsauroideans (2d), oviraptorosaurs (4), ornithomimosaurs (3), and “basal” coelurosaurs (1) by PC 2. Non-avian Pygostylia (5) and Aves + Limenavis + Iaceornis (6) are separate from non-avialan dinosaurs and “basal” avialans for PC 1, and they are separated from each other by PC 2. PC 3 distinguishes ornithomimosaurs (bottom) from Doran et al. ◀ Dinosaur baraminology ▶ 2018 ICC 414 Figure 8. Biplot of PCA scores (black) and vectors (gray) for Nesbitt’s (2009) data matrix for basal Saurischia. PC 1 accounts for 37.4% of the variance and PC 2 accounts for 17.1% of the variance. Discontinuity exists between theropods (left), sauropodomorphs, Herrerasaurus , and ornithischians (top) and outgroup taxa (right).