In which time period are we currently living?

Dinosaurs, small mammals, and birds are found in this time period.

Which fossil is the youngest?

What is the importance of studying fossils?

Geologists assume the newest rock layers are on top of the older ones, unless some type of disturbance occurs, in known as …

Determines the “relative” order of past events but not the absolute age.

Uses the decay of radioactive elements to find the ___________________________ of a rock or fossil.

These specialized fossils indicate to geologists the boundaries in geological time and determine the age of rocks.

This chronological time chart is broken into different time chunks, the largest being the Eon, then Era, Period, and Epoch.

History of life as documented by all fossils, preserved in sedimentary rock strata is known as the _________________________.

Claire would like to show that fossils provide evidence of how old Earth is. She knows that the fossil record can be used to deduce geologic time scales and present a record of Earth’s history. Which fossils match the Precambrian time period^?

Preserved remains of plant and animals from the remote past are called _______________.

The end of life for a group of organisms, usually a species, is called a(n) ________________.

What division of time was the longest ?

When most of the major groups of animals first appear in the fossil record.