Tanyrhinichthys

Tanyrhinichthys is an extinct genus of prehistoric ray-finned fish with a lengthened rostrum that lived during the Kasimovian age in what is now New Mexico, United States. Fossils were recovered from Tinajas Member of the Atrasado Formation.

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Ecology and evolution

Tanyrhinichthys had an elongated rostrum equipped with sensory canals, which allowed it to find prey organisms hidden in the substrate, similar to modern sturgeons. It is one of the first actinopterygians to independently evolve an elongate rostrum during the Paleozoic Era, along with Tegeolepis and Phanerorhynchus.