Aspidorhynchus (meaning “shield snout”) is an extinct genus of ray-finned fish from the Jurassic andCretaceous periods. Fossils have been found in Europe and Antarctica. Aspidorhynchus was a slender, fast-swimming fish, 60 centimetres (2.0 ft) long, with tooth-lined, elongated jaws. It also had heavy scales and a symmetrical tail. The upper jaw was longer than the lower […] read more