Fossilized
The preserved remains of an organism
What is a fossil
The largest unit of time
What is Eon
What is the term for when all the members of a particular species die out?
What is Extinction
The body structure and structural traits of organisms
What is Anatomy
What is Frozen Remains
What is trace fossils
What is Age
The biological change of organisms becoming different over many generations
What is Evolution
An unorganized body plan
What is Asymmetrical
Fossil of an organism that was trapped in asphalt
What is Tar Pit Fossil
Fossilized organisms preserved in tree sap
What is amber fossil
What are Eras divided into on the Geologic Time Scale?
What are Periods?
When whole groups of related species die out in a relatively short time span because of a large change in the environment.
A body plan composed of one line of symmetry from the head to tail of the organism
What is Bilateral Symmetry
Fossil that is composed of only Carbon compounds
What is Carbonized Fossil
An organism's minerals are replaced and forms a 3-D copy of that organism
What is permineralized fossil
The use of these allows scientists to get the relative age of a fossil
What is Geologic Column
Comparison of the characteristics of organisms through similarities of anatomy and DNA to show how closely related they are
What are Evolutionary Relationships
A body plan that has many lines of symmetry around a central point
What is Radial Symmetry
The fossil that is an impression left by an organism that is sometimes filled with sediment
What is Cast and Mold Fossils
Fossils of organisms that have body structures that are found both in an ancestral species and in its descendants.
What are transitional fossils
What has the placement of all the known fossils in order of their known age?
The age of Earth
4.5 Billion Years old
All organisms share this through evidence of the Fossil Record
What is Common Ancestor
The fossils used to predict the absolute age of other fossils
What are Index Fossils