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Earth history vocab

Adaptive radiation The development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches.
Amber A hard yellowish / brownish translucent fossil resin.
Evolution Sequence of events involved in the development of a species.
Fossil The remains of a plant or animal from a past geological age.
Geologic time The time of the physical formation and development of the Earth.
Paleontologist A specialist in fossil organisms and related remains.
Period A unit of geological time when a system of rocks formed.
Petrification The process of turning a plant material into stone.
Sedimentary Formed by or containing the accumulation of deposited matter.
Superposition The principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest.
Trilobite An extinct arthropod with a three part exoskeleton.
A chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon 14 believed between to be reliable up to 40,000 years.
Created by: rlopezv



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