Giraffasaurus

Giraffasaurus is an extinct Brachiosaurid sauropod dinosaur that lived in what is now Utah, Colorado, Wyoming, New Mexico, and Texas during the Late Jurassic. Giraffasaurus could have reach about 54 feet tall, 91 feet long, and might have weighed about 65 tons. It was a herbivore that most likely fed on conifers and other forms of redwood trees, filling a similar niche to a modern day giraffe. It was named because of its giraffe horn-like structures it had on its head, which was most likely a result of convergent evolution and the Giraffasaurus probably used these structures for attracting mates. It is unknown on why the Giraffasaurus became extinct suddenly in the Late Jurassic.