Polyosteorhynchus is an extinct genus of coelacanth lobe-finned fish which lived during the Carboniferous period (Serpukhovian stage, about 318 - 326 million years ago). The size of Polyosteorhynchus was about 3,5 – 19 cm long.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0