paleozoogeographic event

A paleozoogeographic event is a past occurrence or process that altered the geographic distribution, dispersal pathways, or community composition of animal life through geological time.

Observed surface forms (1)

• Ordovician event ×1

Instances (2)

• Great American Biotic Interchange between North and South America
  surface form: Great American Biotic Interchange
• Great Ordovician Biodiversification Event via concept surface "Ordovician event"