Herrerasaurus was a formidable predator for its time

He launches himself from the cover of vegetation

Acrocanthosaurus has been the subject of debate regarding its taxonomic classification

dicho cuerpo lo podían retraer y encerrarse en su concha mediante un opérculo córneo

Height 85mm

Koolasuchus cleelandi Archaeopteryx Herrerasaurus was a formidable predatorKoolasuchus cleelandi, an extinct giant temnospondyl, emerges as one of the most formidable predators of the ancient Australian landscape. Approximately 120 million years ago, during the early Cretaceous period, in the Barremian, this imposing amphibian reigned over the rivers and streams of what we know today as Australia. Discovered in 1989 by paleontologist Lesley Kool and geologist Mike Cleeland, Koolasuchus cleelandi is known from jaw fragments