BioScience Dictionary

 
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Found Index fossils 1 time.

Displaying results 1 to 10.

1. Index fossils
Fossils (or groups of fossils) which are used by geologists and paleontologist s to help correlate different events or processes in different parts of the world which happened at the same time. Species which make good index fossils are able to tolerate a wide range of ecological conditions, are geographically widespread, common, easy to find, and evolutionarily short-lived (that is, they speciated and then quickly became extinct). In general, they are also plankton ic and very small.