New Emeroleter paper promotes old myths based on taxon exclusion
Bazzana-Adams, MacDougall and Fröbisch 2024
put Emeroleter (Fig 1) in their µCT scanner.
Always good to get more precise data.
Figure 2. Emeroleter nests between Macroleter and Romeriscus + Lanthanosuchus.
” data-medium-file=”https://pterosaurheresies.files.wordpress.com/2011/10/emeroleter588.jpg?w=300″ data-large-file=”https://pterosaurheresies.files.wordpress.com/2011/10/emeroleter588.jpg?w=584″ class=”size-full wp-image-15959″ src=”https://pterosaurheresies.files.wordpress.com/2011/10/emeroleter588.jpg?w=584&h=278″ alt=”Figure 2. Emeroleter nests between Macroleter and Romeriscus + Lanthanosuchus.” width=”584″ height=”278″ srcset=”https://pterosaurheresies.files.wordpress.com/2011/10/emeroleter588.jpg?w=584&h=278 584w, https://pterosaurheresies.files.wordpress.com/2011/10/emeroleter588.jpg?w=150&h=71 150w, https://pterosaurheresies.files.wordpress.com/2011/10/emeroleter588.jpg?w=300&h=143 300w, https://pterosaurheresies.files.wordpress.com/2011/10/emeroleter588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />
Figure 1. Emeroleter data prior to any µCT scans.
Unfortunately
these three paleontologists were caught spreading the myth of the Parareptilia (Fig 2), which they described as “a taxonomically and morphologically diverse clade of basal sauropsids with an exceptional fossil record across the end-Permian mass extinction.”
This invalidated clade is SO diverse it includes mesosaurs and pareiasaurs. Not good. Sauropsida = not Synapsida was also invalidated by the LRT.
Figure 2. From Bazzana-Adams et al 2024. Colors added here. Blue = outgroup pre-reptiles. Green = Lepidosauromorpha. White = Archosauromorpha. Yellow = scrappy taxa.
Unfortunately
it gets worse in sentence two of their introduction, “The clade is generally considered to be the sister group to Eureptilia, the clade that includes all living reptiles, though other recent work has recovered the alternative position of Parareptilia nested within Diapsida and some analyses recover Parareptilia as paraphyletic.”
Eureptilia = not Parareptilia, is likewise invalid.
Diapsida is not monophyletic. That skull type developed twice in the LRT.
Figure 4. Subset of the LRT focusing on Emeroleter and its interrelationships.
” data-medium-file=”https://pterosaurheresies.files.wordpress.com/2024/05/emeroleter-interrelations588.jpg?w=88″ data-large-file=”https://pterosaurheresies.files.wordpress.com/2024/05/emeroleter-interrelations588.jpg?w=301″ class=”size-full wp-image-85748″ src=”https://pterosaurheresies.files.wordpress.com/2024/05/emeroleter-interrelations588.jpg?w=584&h=1987″ alt=”Figure 4. Subset of the LRT focusing on Emeroleter and its interrelationships.” width=”584″ height=”1987″ srcset=”https://pterosaurheresies.files.wordpress.com/2024/05/emeroleter-interrelations588.jpg?w=584&h=1987 584w, https://pterosaurheresies.files.wordpress.com/2024/05/emeroleter-interrelations588.jpg?w=44&h=150 44w, https://pterosaurheresies.files.wordpress.com/2024/05/emeroleter-interrelations588.jpg?w=88&h=300 88w, https://pterosaurheresies.files.wordpress.com/2024/05/emeroleter-interrelations588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />
Figure 3. Subset of the LRT focusing on Emeroleter and its interrelationships.
The traditional clade,
Parareptilia, is not recovered when a more taxa were added to the large reptile tree (LRT, 2319 taxa, subset Fig 3) because clade members split apart. That makes a clade invalid, a myth, traditionally supported by academic referees and editors.
The LRT minimizes taxon exclusion by including so many taxa.
We paleontologists are stuck in the past.
That’s what we do. We stick to the past. That doesn’t mean you can’t be up-to-date with your taxon lists. Build your own LRT. Don’t borrow = trust someone else’s taxon list.
References
Bazzana-Adames KD, MacDougall MJ, Fröbisch J 2024. Cranial anatomy of Emeroleter levis and the phylogeny of Nycteroleteridae. PLoS ONE 19(4): e0298216. https://doi.org/10.1371/journal.pone.0298216
Tsuji, Müller and Reisz 2012. Anatomy of Emeroleter levis and the Phylogeny of the Nycteroleter Parareptiles. Journal of Vertebrate Paleontology 32 (1): 45-67. doi:10.1080/02724634.2012.626004.
Modesto SP, Damiana RJ and Sues H-D 2002. A reappraisal of Coletta seca, a basal procolophonid reptile from the lower Triassic of South Africa. Palaentology 45(5):883-895.
wiki/Emeroleter
wiki/Sauropsida
wiki/Eureptilia
wiki/Parareptilia
Source: https://pterosaurheresies.wordpress.com/2024/05/02/new-emeroleter-paper-promotes-old-myths-based-on-taxon-exclusion/
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