Herrerasaurus is also one of the oldest known dinosaurs, having emerged only two million years after Eoraptor.

It was also a bipedal carnivorous dinosaur with very fast speeds. Its body was longer than a large shark. Although it was not the largest dinosaur, compared with today's lions and tigers, it was the "king"

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The body shape of Herrerasaurus Herrerasaurus has sharp teeth and short forelimbs, less than 1/2 of the hind limbs.

There are sharp claws on the palms of each forelimb, and its hind limbs are more primitive than any later dinosaurs. Archaeologists have examined the damage to the auditory ossicles in the ears and speculated that this dinosaur had extremely keen hearing.

Its long claws and upper and lower jaws with sharp teeth indicate that it was a predator that was feared by other animals. Its upright posture indicates that Herrerasaurus was one of the most agile and fast-running dinosaurs at that time.

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Herrerasaurus's Skull Herrerasaurus had a long, flat skull, sharp serrated teeth, and a double-hinged jaw.

Its head gradually tapers from the top of its head to its snout, and its nostrils are very large. Herrerasaurus has an elastic joint on its mandible, which is similar to some later theropod dinosaurs.

When the mouth is opened, this kind of energy saving makes the jaws expand from the front part to the back part, so that it can bite the prey firmly.

Some existing lizards also have a head structure similar to this, which helps them subdue their prey. Therefore, when other animals encounter Herrerasaurus, the best way is to escape, otherwise they will definitely become Herrerasaurus.

of gourmet food.

Life form of Herrerasaurus Herrerasaurus is also a carnivorous dinosaur. Dinosaurs smaller than it or insects such as dragonflies will be its food. It often goes to the river to find prey. Its sharp teeth and sharp claws are

It is an excellent hunting tool. After acquiring prey, it will quickly leave in order to avoid other predators, and the small Herrerasaurus will feed on the carcass of the animal.

After studying the pelvic structure of Herrerasaurus, paleontologists who were close relatives of Herrerasaurus also discovered some other dinosaurs, such as the Crossosaurus he discovered in southern Brazil. These dinosaurs are most likely to be Herrerasaurus.

relatives.

In addition, Chindiosaurus discovered in Arizona, USA, is also considered to be related to Herrerasaurus, which confirms the theory of dinosaur homology, because many carnivorous dinosaurs have similarities with Herrerasaurus.

The discovery provides favorable conditions for paleontologists to guess what these earliest dinosaurs looked like.

The skeleton of Herrerasaurus was unearthed. By chance, an Argentine farmer named Herrera discovered the first fossil of Herreras, and the dinosaur was named after it. It was not until 1988 that a complete skeleton of Herrerasaurus was discovered.

The Lelagosaurus fossil was discovered 30 years after the first fossil was discovered.

This time a relatively complete Herrerasaurus skeleton fossil was unearthed, as well as some fragments.

Dinosaur business card name: Herrerasaurus Period: Late Triassic Appearance: 5 meters long, 300 kilograms in weight Genus: Theropod Distribution: South America: Argentina.