Apatosaurus excelsus existed from about 154 to 151 million years ago. This was during the Kimmeridgian and Tithonian stage of the Jurassic period. The Jurassic period was during the Mesozoic era.
Brontosaurus is actually an invalid name for Apatosaurus excelsus. Apatosaurus existed from 154 to 150 million years ago, which was during the Kimmeridgian and Tithonian stages of the Jurassic period of the Mesozoic era.
Late Jurassic 161-145 million years ago.
150 years
There are four accepted species of Apatosaurus. They are Apatosaurus ajax, Apatosaurus excelsus, Apatosaurus louisae, and Apatosaurus parvus.
The Brachiosaurus was a sauropod dinosaur. The Brachiosaurus was found to live during the Cretaceous period which was over 150 million years ago. The remians of the Brachiosaurus were found in Colorado and Utah.
The apatosaurus is the apatosaurus which is an herbivore.
Apatosaurus lived between 154 and 150 million years ago. This was during the Kimmeridgian and Tithonian stages of the Jurassic period.
Apatosaurus was a sauropod dinosaur. Like all dinosaurs, Apatosaurus was a reptile.
Apatosaurus predatorsAllosaurusRaptorsPrehistoric Crocodiles
The Apatosaurus evolved into a seagull
Yes, Apatosaurus is a sauropod.
An apatosaurus is a large sauropod dinosaur of the genus Apatosaurus, belonging to the late Jurassic period.