The damselfish, Microspathodon, enters the LRT as a much needed transitional taxon
Taking my own advice,
I recently added a few taxa to better understand some of the more stubborn hypothetical interrelationships in the fish subset of the LRT. One new taxon, the extant damselfish (Microspathodon 25cm, Fig 1) now nests between Anabas and Zanclus in the LRT.
Figure 1. Ancestors of the moorish idls (Zanclus) tested in the LRT now include the damselfish, Microspathodon, the latest addition to the LRT.
” data-medium-file=”https://pterosaurheresies.files.wordpress.com/2024/03/microspathodon2zanclus588.jpg?w=249″ data-large-file=”https://pterosaurheresies.files.wordpress.com/2024/03/microspathodon2zanclus588.jpg?w=584″ class=”size-full wp-image-84718″ src=”https://pterosaurheresies.files.wordpress.com/2024/03/microspathodon2zanclus588.jpg?w=584&h=703″ alt=”Figure 1. Ancestors of the moorish idls (Zanclus) tested in the LRT now include the damselfish, Microspathodon, the latest addition to the LRT.” width=”584″ height=”703″ srcset=”https://pterosaurheresies.files.wordpress.com/2024/03/microspathodon2zanclus588.jpg?w=584&h=703 584w, https://pterosaurheresies.files.wordpress.com/2024/03/microspathodon2zanclus588.jpg?w=125&h=150 125w, https://pterosaurheresies.files.wordpress.com/2024/03/microspathodon2zanclus588.jpg?w=249&h=300 249w, https://pterosaurheresies.files.wordpress.com/2024/03/microspathodon2zanclus588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />
The Bauplan of a more plesiomorphic specimen,
like Microspathodon (Fig 1), can help identify the more derived traits in Zanclus (Fig 1) that may be difficult to disentangle without an easier primer.
As a bonus, you get to see how evolution worked when a new transitional taxon links two apparently distinct and disparate taxa together.
References
Gill TN 1862. Catalogue of the fishes of Lower California in the Smithsonian Institution collected by Mr. J. Xantus. Part III. Proceedings of the Academy of Natural Sciences of Philadelphia. v. 14: 249-262.
Source: https://pterosaurheresies.wordpress.com/2024/03/06/the-damselfish-microspathodon-enters-the-lrt-as-a-much-needed-transitional-taxon/
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