Feduccia 2023 pushes the acetabulum into the ‘birds are dinosaurs’ hypothesis
Feduccia 2023 wrote:
“Here, I present anatomical evidence from the acetabulum and its important appurtenances, the supracetabular crest and the antitrochanter, that hip anatomy differs substantially between dinosaurs and birds. Many basal birds and early diverging neornithines tend to have a nearly closed or partially closed acetabula, thus rendering the current terms “open” or “closed” acetabula inaccurate; they should be modified or replaced. Given new evidence presented here, the relationship of “dinosaurs” and birds must be re-evaluated.”
Here Feduccia is “Pulling a Larry Martin” = focusing on one or a dozen traits instead of creating a competing phylogenetic analysis that presents an competing bird outgroup. Nothing else will do, no matter how detailed the study.
An example of a competing phylogenetic analysis
that minimizes taxon exclusion by including 2328 taxa is online here: reptileevolution.com/reptile-tree In that cladogram birds ancestors are theropod dinosaurs. No other taxa or clades are more parsimonious sisters.
References
Feduccia A 2024. The Avian Acetabulum: Small Structure, but Rich with Illumination and Questions. Diversity 16(1), 20; https://doi.org/10.3390/d16010020
Source: https://pterosaurheresies.wordpress.com/2024/12/30/feduccia-2023-pushes-the-acetabulum-into-the-birds-are-dinosaurs-hypothesis/
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