Whiteia anniae, an Early Triassic coelacanth, enters the LRT
From the Dai et al 2025 abstract:
“Coelacanths (e.g., Latimeria) are a curious group of sarcopterygian fishes that survive over hundreds of millions of years and are important in evolutionary biology.”
This is a traditional myth (due to taxon exclusion) still taught in college textbooks.
By contrast, in the large reptile tree (LRT, 2340 taxa) coelacanths nest apart from pre-tetrapod sarcopterygians and closer to tiny Luganoia, derived from sea robins and spiny sharks. Thus, lobe fins appeared in coelacanths by convergence with pre-tetrapods in the present hypothesis.
Others omitted pertinent taxa. The LRT minimizes taxon exclusion with a much larger number of taxa.
The authors described
Whitea anniae from the Early Triassic (249 mya) similar to and basal to previously tested Guizhoucoelacanthus, but with a shorter post-crania and no tooth-like processes on the lacrimal. The skull and mandible bones are nearly identical in the two taxa. Those observations are validated here.
Click on the above links to view the images.
References
Dai QH et al 2025. A new coelacanth (Actinistia, Sarcopterygii) from the Early Triassic of Anhui, China. Nature Science Reports 15, 36320 (2025).
https://doi.org/10.1038/s41598-025-20229-w
Source: https://pterosaurheresies.wordpress.com/2026/03/15/whiteia-anniae-an-early-triassic-coelacanth-enters-the-lrt/
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