as it features unique characteristics compared to other known thyreophorans

It is thought to have weighed between 200 and 250 kilograms

This environment would have included transitions between intertidal zones

Belonging to the family Ceratopsidae

los cinodontes

Stethacanthus altonensis Dino and Dog as it features unique characteristicsStethacanthus 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