For readers in a hurry,
the answer to the headline question is, ‘no.’
Romano 2021 reports:
“About half of all vertebrate species today are ray-finned fishes (Actinopterygii), and nearly all of them belong to the Neopterygii (modern ray-fins). The oldest unequivocal neopterygian fossils are known from the Early Triassic.”
Clade membership: According to Wikipedia, “Neopterygii is a subclass of ray-finned fish (Actinopterygii). They could move more rapidly than their ancestors. Their scales and skeletons began to lighten during their evolution, and their jaws became more powerful and efficient.” Electroreception is a lost sense, “even if it has later been re-evolved within Gymnotiformes and catfishes, which possess nonhomologous teleost ampullae. Better control of the movements of both dorsal and anal fins, resulting in an improvement in their swimming capabilities.
According to the Wikipedia cladogram, Neopterygii include
in the large reptile tree (LRT, 1801+ taxa) the earliest unequivocal ray fin fish is Doliodus (Fig. 1) from the Early Devonian. Gars, bowfins, lobefins, placoderms and spiny sharks nest within the bony fish. Moray eels are among the most primitive taxa, and these are derived from hybodontid sharks. Counterintuititively, some of the more bizarre-looking bony fish, often deep sea forms, are among the most primitive bony fish.
Romano 2021 continues:
“In the Middle Triassic neopterygians were already species-rich and trophically diverse, and bony fish faunas were more regionally differentiated compared to the Early Triassic. Still little is known about the early evolution of neopterygians leading up to this first diversity peak. Here, I review the fossil record of Early and Middle Triassic marine bony fishes (Actinistia and Actinopterygii) at the substage-level in order to evaluate the impact of this hiatus on our understanding of their diversification after the largest mass extinction event of the past.”
Taxon inclusion in the LRT
permits the association of taxa that had traditionally not been associated before. Traditional memberships and traditional clades are not supported by the LRT where spines evolve to become fins and vice versa.
Romano C 2021. A hiatus obscures the early evolution of modern lineages of bony fishes. Frontiers. Earth Science 8:618853 doi: https://doi.org/10.3389/feart.2020.618853
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