Herrerasaurus. Found in the late triassic of the ischigualasto formation of northwestern argentina herrerasaurus ischigualastensis is an early archosaur and on the verge of being a dinosaur proper. Herrerasaurus was a sauropod of spectacular proportions. Learn more about the herrerasaurus late triassic dinosaurs and dinosaurs of all eras. The first specimen was found in 1958 by victorino herrera for whom the fossil was named.
Herrerasaurus genus herrerasaurus primitive carnivorous dinosaur or close relative of dinosaurs found as fossils in argentine deposits from the late triassic period 2287 million to 1996 million years ago. Information about the dinosaur herrerasaurus and thousands of other prehistoric creatures. It walked on its hind legs which sported feet. Herrerasaurus victorino herreras lizard was one of the oldest and most primitive theropods or meat eating dinosaurs though in its day it was relatively hyper advanced.
Its body displayed many of the same features of the later theropods. This sly dinosaur is a dangerous opponent. This skeleton was incomplete but the discovery of a complete skull in 1988 and additional fragments have provided enough. One of the first to exist actually.
Adults had skulls up to 56 cm 22 in long and were up to 6 metres 20 ft in total length and 350 kg 770 lb in weight. Herrerasaurus wrist and lower arm look fairly unusual for a reptile from its period yet they do crudely resemble those of 21st century aviansherrerasaurus forelimbs utilized a similar range. Smaller specimens were half the size with skulls only about 30 cm 12 in long. Herrerasaurus was a dinosaur which lived approximately 231 million years agomaking it one of the earliest dinosaurs to have ever walked the earth that have been found so far.
It had long powerful hind legs for running and short forelimbs equipped with three. Herrerasaurus is a medium sized theropod found on the arks.