Herbivorotyrannus

Herbivorotyrannus is an extinct species of giant bipedal theropod dinosaur that lived in what is now South Dakota and Montana during the Late Cretaceous around 68-66 million years ago. As its name suggests, unlike any other large Tyrannosaurs, including the famous Tyrannosaurus, Herbivorotyrannus was a herbivore, and likely had fed on leaves, fruits, and among other vegetation. Herbivorotyrannus also had long arms, which were likely used to pull down branches, a feature unique among large Tyrannosaurs. Herbivorotyrannus was most likely a solitary animal, only coming with other Herbivorotyrannus individuals during mating seasons, however, some paleontologists argued that there are too few skeletons of Herbivorotyrannus to prove this, and Herbivorotyrannus may have been a social herd-dweller. The main predators of Herbivorotyrannus included Tyrannosaurus, Martialotyrannus, Allotyrannus, Deinobaronyx (young ones only), Aurocarnotaurus, Carnovorosaurus, and even Deinosuchus. It is unknown why did the Herbivorotyrannus became extinct, but it may have been due to the asteroid/comet that struck the Gulf of Mexico, with its effects causing the cloud of ash and acid rain to kill off many plant life, leaving Herbivorotyrannus without any plant food and the Herbivorotyrannus eventually starved to death.