Vocab page 74 Flashcards
1
Q
Fossil
A
The remains or physical evidence of an organism preserved by geologic processes
2
Q
Trace Fossil
A
Fossilized mark that is formed in soft sediment by the movement of an animal
3
Q
Mold
A
Mark or captivity made in a sedimentary surface by a shell or other body
4
Q
Cast
A
Type of fossils that forms when sediments fill in the captivity left by a decomposed organism
5
Q
Index fossils
A
Fossil that is found in the rock layers of only one geologic age and that is used to establish the age of the age of the rock layers
