Prochoresis

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Prochoresis

 

a slow change in the region of distribution of a group of organisms (species, genus) over time. The term is used in paleontology to emphasize how gradual the expansion of an area of distribution is and to distinguish this phenomenon from other types of animal migration.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.