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Fossil Vocabulary Practice

Across
When minerals replace all or part of an organism, turning the organism into stone.
In horizontal rock layers, the oldest layer is at the bottom and each layer is younger than the layers below it.
The preserved remains or traces of living things
Extremely thin coating of carbon on rock
The surface where new rock layers meet a much older rock surface beneath them
Prints that provide evidence of the activities of ancient organisms
Down
Age of a rock compared to the age of other rocks
Preserving the remains of organisms with little or no change in tar, amber, and ice.
A hollow area in sediment in the shape of an organism or part of an organism
No longer exists
The type of rock fossils are found in
The number of years since the rock formed
A solid copy of the shape of an organism; created in the empty space of a mold