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Fossil of dinosaurs are found in Cretaceous rock but not in tertiary rock?
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∙ 11y ago
All dinosaurs went extinct before the tertiary period.
Wiki User
∙ 11y ago
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What is the significance of the boundary between the cretaceous-tertiary time periods?
This boundary, called the K-T, or Cretaceous(K)-Tertiary(T) boundary, is around 65 million years ago and marks the point which dinosaurs are no longer found in the rock record.
Why would a dinosaur with feathers be a bad index fossil?
Dinosaurs with feathers have been found through a relatively wide range of geologic time. Not counting birds feathered dinosaurs can be found from the Jurassic period to the end of the Cretaceous period.
Why was the Interior Plains a good home for dinosaurs?
The whole world was a good home for dinosaurs. Dinosaur fossils are found where sedimentary rocks of the right age are exposed. The Western United States has Jurassic and Cretaceous beds, so we find Jurassic and Cretaceous dinosaurs there. There are few dinosaur finds in the Eastern states because the rocks there are too old, being laid down before the dinosaurs appeared.
What is the earliest known plant fossils?
The oldest known fossil angiosperms, were found in Lower Cretaceous parts of North America.
Scientists have found a huge underwater crater in Mexico that they believe could be linked to the extinction of the dinosaurs What event 65 million years ago most likely caused this crater?
The event that was marked by an asteroid hitting the Earth 65.5 million years ago near modern day Chixulub in the Yucatan Peninsula in Mexico is known as the K-T or Cretaceous-Tertiary Extinction Event.
What is the significance of the boundary between the cretaceous-tertiary time periods?
This boundary, called the K-T, or Cretaceous(K)-Tertiary(T) boundary, is around 65 million years ago and marks the point which dinosaurs are no longer found in the rock record.
What exclusive element was found at the cretaceous tertiary boundary?
Iridium
Why would a dinosaur with feathers be a bad index fossil?
Dinosaurs with feathers have been found through a relatively wide range of geologic time. Not counting birds feathered dinosaurs can be found from the Jurassic period to the end of the Cretaceous period.
What dinosaurs start with the letter f?
Fukuisaurus and Fukuiraptor - both found in Japan from Cretaceous period
How did humans discover what dinosaurs lived in the cretaceous time period?
they found the bones and fossils of the dinosaurs
When was the first fossil found of the dinosaurs?
the first fossil I've ever seen was dinonychus raptor I'm not sure if it was the first dinosaur fossil found but i think it might be.
How many years dinosaurs were found?
the first fossil ever found was found in 1676 called megalosaurus
How did dinosaurs hatch their eggs?
Fossil dinosaurs nests have been found with dinosaurs sitting on their nests like birds do. This is not surprising as our modern day birds are descended from raptor dinosaurs.
What dinosaur was found in Maine?
No dinosaurs have been found in Maine. The state fossil is Pertica, a plant from the Devonian.
Can dinosaurs be pets?
Technically yes. While dinosaurs are generally regarded as extinct by the public, it has been found that birds are, in fact, the only dinosaurs to have survived the Cretaceous-Paleogene extinction. So if you have a pet bird, you have a pet dinosaur.
What vegetables would be found in a dinosaurs habitat?
None, because there were no flowering plants except in the middle Cretaceous and late Cretaceous, which means only 2/9 of the dinosaur time there were flowers but no vegetables or fruits.
What kind of dinosaurs are find in minisota?
One of the most important fossil sites from the late Cretaceous, the Hell Creek Formation, is located in Montana. Some of the most famous dinosaurs have been found here, including T-rex, Triceratops, Edmontosaurus, Ankylosaurus, Torosaurus, Pachycephalosaurus, Ornithomimus, Troodon, Albertosaurus, and the largest pterosaur ever found, Quetzalcoatlus. The Morrison Formation of the late Jurassic is also found in Montana, and famous dinosaurs like Allosaurus, Diplodocus, Apatosaurus, Stegosaurus, Dryosaurus, etc have been found there.
