Brachiosaurus

Brachiosaurus /ˌbrækiəˈsɔrəs/ is a genus of sauropod dinosaur from the Jurassic Morrison Formation of North America. It was first described byElmer S. Riggs in 1903 from fossils found in the Grand River Canyon (now Colorado River) of western Colorado, in the United States. Riggs named the dinosaur Brachiosaurus altithorax, declaring it "the largest known dinosaur". Brachiosaurus had a proportionally long neck, small skull, and large overall size, all of which are typical for sauropods. However, the proportions of Brachiosaurus are unlike most sauropods. The forelimbs were longer than the hindlimbs, which result in a steeply inclined trunk, making the overall body shape reminiscent of a modern giraffe. Also, while the tail is a typical long dinosaur tail, it was relatively short for a sauropod.

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                                                brachiosaurus Blender Model

Allosaurus

Allosaurus is a genus of large theropod dinosaur that lived 155 to 150 million years ago during the late Jurassic period. The name Allosaurus means "different lizard". It is derived from the Greek ἄλλος/allos ("different, other") and σαῦρος/sauros ("lizard"). The first remains that can definitely be ascribed to this genus were described in 1877 by paleontologist Othniel Charles Marsh. As one of the first well-known theropod dinosaurs, it has long attracted attention outside of paleontological circles. Indeed, it has been a top feature in several films and documentaries about prehistoric life.
Allosaurus was a large bipedal predator. Its skull was large and equipped with dozens of large, sharp teeth. It averaged 8.5 meters (28 ft) in length, though fragmentary remains suggest it could have reached over 12 meters (39 ft). Relative to the large and powerful hindlimbs, its three-fingered forelimbs were small, and the body was balanced by a long, heavy tail. It is classified as an allosaurid, a type of carnosaurian theropod dinosaur. The genus has a complicated taxonomy, and includes an uncertain number of valid species, the best known of which is A. fragilis.

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Pyrotherium

Pyrotherium is an extinct genus of South American ungulate, of the order Pyrotheria, that lived in what is now Argentina, during the Early Oligocene. It was named "Fire Beast" because the first specimens were excavated from an ancient volcanic ashfall. The vaguely elephant-like Pyrotherium was 3 m (10 ft) long and 1.50 m (5 ft) tall at the shoulders. Its heavy body was carried by robust legs. Pyrotherium also had a short trunk on its snout, and two pairs of flat, forward-facing tusks in the upper jaw, with a single pair in the lower jaw.

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                                                           Pyrotherium Blender Model