Brontosaurus is an invalid name for Apatosaurus excelsus. Apatosaurus excelsus fossils date to between 154 and 151 million years ago. That means they probably died out about 151 million years ago.
brachiosaurus lived during the late Jurassic
brachiosaurus went extinct with all dinosaurs (execpt for birds) in the 65 million years ago in the K/T mass extinction
The brontosaurus, along with the many other species of dinosaurs, became extinct about 65 millions years ago.
brachiosaurus went extinct in the K/T Mass Extinction Event at the End of the Cretaceous in 65 Million years ago
Brontosaurus is an invalid name for Apatosaurus excelsus. Apatosaurus excelsus fossils date to between 154 and 151 million years ago, and presumably they died out about 151 million years ago.
1 year ago cool aye!
we eated them :)
it came Extinct for eating other animals
The dodo bird became extinct in the early 1600's. The Triceratops became extinct long before that.
This question cannot be answered because we cannot observe an extinct creature.
huayangosaurus went extinct in the K/T Mass Extinction in 65 million years ago with all Dinosaurs Went Extinct
when if the plants went extinct of deforesation will be no life on earth
They are both extinct animals. The dodo went extinct in the late 1600s. The moa went extinct in about 1400.
it went extinct in 19 b.c
Cro-Magnon never went extinct. They evolved into modern Europeans. Neanderthals went extinct.
If they went extinct the whole food chain would be out of balance.
Brachiosaurus was a herbivore.
the dimetrodon went extinct in the Permian Mass Extiction Event in 250 million years ago
the jurassic