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Fossil Vocabulary

fossil preserved remains or traces of plants or animals that lived long ago
mold fossil a hollow space in a rock that has the shape of the living thing
cast fossil a model in the shape of the living thing found in a rock
amber fossil sticky tree sap that trapped and preserved animals or plants
trace fossil evidence found in rocks that show an animal was there
index fossil fossils used to help identify periods in earth’s history
living fossil an animal or plant living today that has not changed very much from its species of long ago
mass extinction a time in Earth’s history when a major event caused many species to become extinct all at the same time
relative age comparing a layer of rock to other layers to decide if it is older, younger, or about the same age
trilobite a fossil of a sea animal with a three section exoskeleton
Pangaea the theory that states the 7 continents were once connected as one giant continent
sedimentary rock one kind of rock that forms when sediment settles to the bottom of water and is pressed and cemented tightly together to form a rock layer
Grand Canyon a landform which shows rock layers that formed at different times in Earth’s history and in different environments
Paleontologist a scientist who studies fossils
geological time scale scientist measure Earth’s history from when the crust formed billions of years ago until now
Created by: stignatiusgrade4