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What is a tropites fossil?
A tropites fossil is a fossil of a tropites. A tropites is a genus of coiled ammonite. They only existed for about 20 million years, which makes it a good index fossil.
Where are most fossils found in Virginia?
The state of Virginia has a spectacular array of fossils, from 540 million year old burrows to one million year old Mastodon teeth. Most fossils are found in the Piedmont Province and Blue Ridge.
A type of trilobite is used as an index fossil. These fossils were made about 540 million years ago. A scientist finds a trilobite fossil in layer 5 in the diagram below?
Whats the answer everyone?
Precambrian are fossils yes or no?
Precambrian is a geologic period that extends as back as 4.500 million years ago. Fossils are very rare from that period of time.
How old is angiosperms in evolution?
After being found in fossils, angiosperms were claimed to be 135 million years old
What is a tropites fossil?
A tropites fossil is a fossil of a tropites. A tropites is a genus of coiled ammonite. They only existed for about 20 million years, which makes it a good index fossil.
How long ago did the tropites live?
The tropites lived 20 million yrs ago.
How old is a tropite fossil?
The rock surrounding it is 68 to 230 million years ago. If you found a phacops fossils the rock surrounding it is 400 million years old.
How old are the fossils from the Silurian period?
Fossils from the Silurian Period are between 443.7 and 416 million years old.
Which layer of the Badlands contains reptile fossils but no dinosaur fossils?
The Badlands in Badlands National Park contain reptile fossils (including alligator fossils), but do not contain dinosaur fossils. Note that "Badlands" refers to a type of geographical feature, which is not only found in Badlands National Park.
How old are triceratops fossils?
Triceratops fossils date to between 68 and 65.5 million years ago. This was during the Maastrichtian stage of the Cretaceous period of the Mesozoic era.
How old were the stegosaurus and the brachiosauras?
Stegosaurus fossils date from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period. Brachiosaurus fossils date to between 154 and 153 million years ago.
How did they find out that Stegosaurus lived in 145 and 155 million years?
Stegosaurus fossils actually date to between 155 and 150 million years ago. Using various methods, paleontologists are able to determine the age of rocks. Then they know that fossils in those rocks are the same age as the rocks. In the case of Stegosaurus, they know the rocks are between 155 and 150 million years old, and they know the Stegosaurus fossils are the same age.
How many years has the velociraptor lived?
Velociraptor fossils date to between 75 and 71 million years ago. That means they existed for about 4 million years.
How many years did apatosaurus exist?
Apatosaurus fossils date to between 154 and 150 million years ago. That means they existed for about 4 million years.
When did apatosaurus appear?
The youngest known fossils of Apatosaurus date to 150 million years ago. Thus, Apatosaurus probably died out around 150 million years ago.
When did Spinosaurus Go Extinct?
Spinosaurus fossils are dated to between 112 and 97 million years ago. They probably died out around 97 million years ago.
