Maranda Stricklin

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A new species of the ray-finned fish Saurichthys (Actinopterygii) from the Dockum Group of Texas (Upper Triassic, Norian) highlights the late appearance of elongate jaws in neopterygians

1 day ago | tandfonline.com | Jack Stack |Sterling J. Nesbitt |Maranda Stricklin |Michelle Stocker

ABSTRACTThe Triassic fossil record (252–201 Ma) preserves shifts in ray-finned fish (Actinopterygii) assemblages from stem-group “palaeoniscoids” to primarily neopterygians, which comprise half of extant vertebrate species. Upper Triassic deposits in the western U.S.A. show the history of the transition in ray-finned fish assemblages in fluvio-lacustrine ecosystems. We describe isolated teeth and rostra of a new species of “palaeoniscoid” ray-finned fish, †Saurichthys justitias sp.

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