Approximate measurements of Cotylorhynchusv:

los cinodontes

as it features unique characteristics compared to other known thyreophorans

Belonging to the family Ceratopsidae

Stethacanthus altonensis Dino and Dog Approximate measurements of Cotylorhynchusv:Stethacanthus 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