Figure 27. Baraminic distance correlation (BDC) results for the Pseudosuchia subset dataset using: A) Pearson correlation coefficient and B) Spearman correlation coefficient. Black squares indicate significant positive correlation, whereas open circles indicate significant negative correlation. Figure 28. Baraminic distance correlation (BDC) results for the non-paracrocodylomorph Pseudosuchia subset dataset using: A) Pearson correlation coefficient and B) Spearman correlation coefficient. Black squares indicate significant positive correlation, whereas open circles indicate significant negative correlation. suchidae is a holobaramin, Gracilisuchidae + Nundasuchus is a likely holobaramin, and Aetosauria is likely either a holobaramin or apobaramin (although the group is in desperate need of baraminological analysis with datasets that include Revueltosaurus). Parringtonia is considered an erpetosuchid (Nesbitt and Butler, 2012). The other erpetosuchids were analyzed alongside Proterochampsia. As a result, we also reanalyzed the non-paracrocodylomorph Pseudosuchia subset but including the three erpetosuchid taxa (Erpetosuchus, Pagosvenator, and Tarjadia) with BDC, MDS, PAM, and FANNY (Supplemental Figures 8-11). These results support Parringtonia as a member of the Erpetosuchidae holobaramin. H. Avemetatarsalia There is weak evidence for discontinuity between Dinosauromorpha + Aphanosauria and Pterosauromorpha, but there is strong evidence for multiple holobaramins within Avemetatarsalia. Aphanosaurs share continuity and show no evidence of continuity with other avemetatarsalians, although Scleromochlus groups with them in the PAM and FANNY results. However, this dataset was constructed before Scleromochlus was redescribed following the CT scanning of all six specimens, which showed strong evidence for its placement near or within Lagerpetidae (Foffa et al. 2022). Thus, Aphanosauria is likely a holobaramin to the exclusion of Scleromochlus. Within Dinosauromorpha, the silesaurids consistently showed close clustering and shared positive correlation, indicating evidence for continuity. They also appear to be discontinuous from all other avemetatarsalian taxa except for Lagosuchus. Future analyses with more silesaurids will help to refine this picture, but at this stage it seems reasonable to suggest that Silesauridae + Lagosuchus is a holobaramin. Dinosaurs have been studied in much greater detail in other studies (e.g., Doran et al. 2018), and there are very few dinosaur taxa represented in the dataset, but it is interesting to note that there was clear evidence of discontinuity between Ornithischia and Saurischia in the BDC and MDS results and in the four-group PAM and FANNY results. More surprising is the lack of obvious discontinuity within Saurischia, except in the four-group PAM and FANNY results. This is likely due to the low number of taxa and few characters present useful for defining saurischian relationships. Lagerpetidae shows strong evidence for internal continuity in all methods, and there is decent evidence for discontinuity surrounding the group in both the “basal” Avemetatarsalia and 0.29 Pterosauromorpha subset analyses. As discussed above, the Kellner et al. (2022) dataset was compiled without the newest information available on MCLAIN, CLAUSEN, PEREZ, BEEBE, AND AHTEN Archosauromorph Baraminology 2023 ICC 513
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