The remains or traces of past life, usually found in sedimentary rock.
What is fossil?
100
Some kinds of living things have not changed in millions of years.
What is true?
100
Trilobite
What is then?
100
Evidence of an animal's activities.
What is a trace fossil?
100
I had 3 or 4 toes and was much smaller than my descendants are today.
What is an ancient horse?
200
The study of fossils
What is paleontology?
200
Every kind of living thing has been preserved as a fossil.
What is false?
200
Scallop
What is both?
200
Thin film of carbon that shows a part of an organism in fine detail.
What is a carbon film?
200
I was longer than a school bus, and many of my teeth were bigger than your hand.
What is an ancient shark (megalodon)?
300
A fossil formed when dissolved minerals fill a mold and harden.
What is a cast?
300
An index fossil lived in many places for many millions of years.
What is false?
300
Horse with one toe protected by a hoof.
What is now?
300
Minerals replace the dead cells of an organism and slowly turn it into a rocklike fossil.
What is petrified?
300
My name is Pecten, my ancestor's name was Chesapecten, and I haven't changed much for millions of years.
What is a scallop?
400
The hollow space that is left when sediment hardens around the remains of an organism and the remains dissolve.
What is a mold?
400
Pangea was an ancient, giant continent.
What is true?
400
Megalodon
What is then?
400
Dead organisms' hard body parts fossilize in this type of rock.
What is sedimentary rock?
400
I lived during the Ice Age. I had thick fur to keep me war. I had very long tusks to help me dig in the ice. I was very large.
What is a woolly mammoth
500
A fossil of an organism that lived in many places around the world for a short period of time.
What is an index fossil?
500
A fish fossil found in the desert is evidence that the land where the fossil was found was once under water.
What is true?
500
Sea scorpion
What is then?
500
Entire animals (spiders, insects) can be preserved when they are trapped in tree sap that hardens.
What is amber?
500
I am a plant. My leaf's picture can be found in your textbook on page 259. I have not changed much in millions of years. Some people use me to help their memory!