31 terms

Dinosaurs and Fossils

This is a study guide.
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adaptations
A special body feature or behavior that helps an animal stay alive.
carnivore
An animals that eats meat.
Herbivore
An animal that eats plants.
omnivore
An animal that eats plants and meat.
extinct
When an animal is no longer alive on earth.
fossil
The preserved remains of something that lived long ago.
paleontologist
A scientist who studies the history of life on earth.
predator
An animal that hunts other animals for food.
prey
An animal that his hunted and killed by other animals.
scavenger
An animal that eats dead plants or animals that it finds.
saurus or saur
lizard
tyranno
tyrant
rex
king
bronto
thunder
brachio
arm
dino
terrible
veloci
speedy
raptor
plunderer (thief)
body fossil
An animal frozen in ice. A bone found in rock.
trace fossil
A footprint.
mold fossil
An animal trapped in mud. The mud hardens. The animal decays leaving an empty space.
cast fossil
The empty space from a mold fossil fills with minerals and hardens into rock.
How did scientists learn about dinosaurs?
By studying fossils
When did dinosaurs become extinct?
65 million years ago
What type of animal has long sharp teeth and claws?
carnivore
What type of animal has flat teeth?
herbivore
What animals are dinosaurs closely related to?
reptiles and birds
What did all dinosaurs have in common?
A backbone (vertebrate)
What lived before dinosaurs?
trilobites
Did humans and dinosaurs live at the same time?
no
Name the four theories of extinction.
1. asteroid
2. ice age
3. volcano
4. disease