Stethacanthus altonensis Eurhinosaurus especially in the Western Interior

especially in the Western Interior Sea

como los neandertales y los primeros humanos modernos

Torosaurus latus was a herbivore

Snout-tail length 526 mm

Stethacanthus altonensis Eurhinosaurus especially in the Western InteriorStethacanthus 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