SaurostomusSaurostomus is an extinct genus of prehistoric bony fish that lived during the early Toarcian stage of the Early Jurassic epoch.Fandom prehistoric-wiki:Saurosto...PalaeoecologyFossils of Saurostomus esocinus containing coleoid gladii in their oesophagus have shown that the species fed on coleoids belonging to the species Teudopsis bollensis and on indeterminate loligosepiines.