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Apatosaurus fossils come from the Morrison Formation of western North America and date to between 154 and 150 million years ago. At that time, the area was a semi-arid subtropical plain with distinct wet and dry seasons. Near rivers, there were forests of conifers, cycads, ginkgoes, ferns, and horsetails. Further from the rivers there were open areas covered in ferns with scattered trees.

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11y ago
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11y ago

Apatosaurus fossils are known from the Morrison Formation of the western USA. Fossils are known from Colorado, Wyoming, Oklahoma, and Utah, so they probably lived throughout the western USA if not all of North America.

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9y ago

Apatosaurus fossils have been found in Wyoming, Colorado, Oklahoma, and Utah. The rocks their fossils are excavated from date to between 154 and 150 million years. At that time they probably roamed across what is now the western United States.

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14y ago

Apatosaurus existed about 150 million years ago. Their fossils have been found in North America. The climate where Apatosaurus lived would have been similar to a savanna, having a distinct wet and dry season. However, there were no grasses, and most plants grew in gallery forests near rivers.

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14y ago

It was a semi-aquatic creature, formerly known as the brontosaurus. It is believed to have been a land dweller. It is also the largest known dinosaur that ever lived.

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11y ago

Apatosaurus fossils are known from the Morrison Formation of the western USA. Fossils are known from Colorado, Wyoming, Oklahoma, and Utah.

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4y ago

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Related questions

How long does an average apatosaurus live?

150 years


What species is an apatosaurus?

There are four accepted species of Apatosaurus. They are Apatosaurus ajax, Apatosaurus excelsus, Apatosaurus louisae, and Apatosaurus parvus.


What dinosaur named the apatosaurus is a herbivore?

The apatosaurus is the apatosaurus which is an herbivore.


How many years ago did the apatosaurus live?

Apatosaurus lived between 154 and 150 million years ago. This was during the Kimmeridgian and Tithonian stages of the Jurassic period.


Was apatosaurus a reptile?

Apatosaurus was a sauropod dinosaur. Like all dinosaurs, Apatosaurus was a reptile.


What did the apatosaurus evolve into?

The Apatosaurus evolved into a seagull


Is an apatosaurus a sauropod?

Yes, Apatosaurus is a sauropod.


What ate the apatosaurus?

Apatosaurus predatorsAllosaurusRaptorsPrehistoric Crocodiles


What is an Apatosaurus?

An apatosaurus is a large sauropod dinosaur of the genus Apatosaurus, belonging to the late Jurassic period.


What era did the apatosaurus live in?

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.


Did the apatosaurus live in the Jurassic time period?

Apatosaurus lived between 154 and 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period. In short, the answers is yes.


What kind of genus is apatosaurus?

Apatosaurus was an herbivorous diplodocidsauropod. There are three accepted species Apatosaurus ajax, Apatosaurus louisae, and Apatosaurusparvus. Brontosaurus execelcus was first though to be its own genus, than it was moved to Apatosaurus for a while, but paleontologists including Robert T. Bakker relized that several differences in the skull, means that Brontosaurus is once again a valid genus