Compartía su hábitat con otros dinosaurios notables como el terópodo Suchomimus o el saurópodo Nigersaurus

Based on the most recent paleontological data

Its environment

It inhabited the grasslands and plains stretching from present-day Alberta

Stethacanthus altonensis Variant:Primed Compartía su hábitat con otrosStethacanthus altonensis is an extinct cartilaginous fish from the Early Carboniferous (late Mississippian, approx. 330320 million years ago), belonging to the Symmoriida group within Chondrichthyes, a primitive lineage closely related to early sharks and chimaeras. It is the type species of the genus Stethacanthus, a taxon particularly renowned for one of the strangest anatomical structures known among Paleozoic vertebrates: a modified anterior