+
Related Flashcards
Cards In This Set
| Front | Back |
|
Paleontologist
|
Scientist who studies fossils.
|
|
Fossil Record
|
Information about past life, including the structure of organism, what they ate, what ate them, in what environment they lived, and the order in which they lived.
|
|
Extinct
|
Term used to refer to a species that has died out.
|
|
Relative Dating
|
Method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock.
|
|
Index Fossil
|
Distinctive fossil used to compare the relative ages of fossils.
|
|
Half-Life
|
Length of time required for half of the radioactive atoms in a sample to decay.
|
|
Radioactive Dating
|
Technique in which scientists calculate the age of a sample.
|
|
Geologic Time Scale
|
To represent evolutionary time.
|
|
Era
|
Divide the time between the Precambrian and the present into three eras.
|
|
Periods
|
Unit of time into which eras are subdivided.
|
|
Proteinoid Microsphere
|
Tiny bubble, formed of large organic molecules, that has some characteristics of a cell.
|
|
Mirco-Fossil
|
Microscopic fossil.
|
|
Endosymbiotic Theory
|
Theory that eukaryotic cells formed from a symbiosis among several different prokaryotic organisms.
|
|
Mass Extinction
|
Event in which many types of living things become extinct at the same time.
|
|
Marcroevolution
|
Large-scale evolutionary changes that take place over long periods of time.
|
