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Temporal range: Upper Jurassic - Lower Cretaceous
Mounted skeleton of Giraffatitan in Berlin.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Order: Saurischia
Suborder: Sauropodomorpha
Infraorder: Sauropoda
Family: Brachiosauridae
Riggs, 1904

Brachiosaurs are a family of sauropod dinosaurs, the brachiosauridae. They were herbivorous quadrupeds with longer forelegs than hind legs. As a result, there is also some dispute about which animals belong within this family.

The largest mounted skeleton in the world is a brachiosaurid the Giraffatitan brancai (formerly Brachiosaurus brancai) at the Museum für Naturkunde in Berlin, Germany.

Brachiosaurids first evolved in the Middle Jurassic period, and died out at the end of the Early Cretaceous period, existing for about 60 million years. The earliest known brachiosaurid is Lapparentosaurus from the Middle Jurassic of Africa. The giant Sauroposeidon from North America was one of the last brachiosaurids, existing just before the end of the Early Cretaceous period.

The name "brachiosaurid" means "arm lizard", which may sound like a strange name for a four-legged animal. The family Brachiosauridae was given this name because the dinosaurs in it tended to have longer "arms" (front legs) than back legs.

In popular culture[change | change source]

Brachiosaurids have been featured in many works of popular culture, particularly the type genus, Brachiosaurus. Brachiosaurus was featured in the 1993 film Jurassic Park, as well as the 2000 Disney film Dinosaur. The brachiosaurid Astrodon is the state dinosaur of Maryland. It was featured in paleontologist Robert T. Bakker's novel Raptor Red, where it was portrayed as a prey item of the dromaeosaurid Utahraptor.