Neobohaiornis: a new basal sapeornithid in the LRT
Shen et al 2024
described Neobohaiornis (Figs 1–3) as ‘a diminutive enantiornithine’. They also reported, “The most diverse Mesozoic clade of birds was the Enantiornithes”.
The use of the term, ‘diverse’ usually means the subject in question was different from the rest. This time ‘diverse’ means Neobohaiornis was so different it was not an enantiornithine.
Tested with more taxa,
here in the large reptile tree (LRT, 2328 taxa) Neobohairornis nests between the larger #11 Solnhofen bird (traditionally, but mistakenly referred to Archaeopteryx), and the larger IVPP V13276 specimen of Sapeornis (Fig 1).
Neither Archaeopteryx
nor Sapeornis were mentioned in the text.
Only one Archaeopteryx was listed as a taxon, the outgroup. That’s traditional when it comes to birds. Sapeornis was also listed as a taxon. As a result of taxon exclusion the authors’ cladograms were poorly resolved. BTW no reconstructions were provided.
Taxon exclusion
may be the reason for the authors’ lack of resolution in their cladogram. The LRT uses all available Solnhofen birds, one of which is the Archaeopteryx holotype skeleton. Universities should start teaching their bird students to use more than one Archaeopteryx in their analyses.
Reconstucting crushed road-kill taxa (Fig 3) is also helpful for scoring and explaining scoring choices too often not clear in crushed fossils.
References
Shen C et al (65 co-authors) 2024. A new diminutive species of bohaiornithid enantiornithine (Aves: Ornithothoraces) from the Lower Cretaceous Jehol Group,northern China. Nature.com/Scientific Reports 14:31363
https://doi.org/10.1038/s41598-024-82869-8
Source: https://pterosaurheresies.wordpress.com/2024/12/31/neobohaiornis-a-new-basal-sapeornithid-in-the-lrt/
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