Show Summary Details

Quick Reference

An early Pleistocene marine stage, about 1.806–0.781 Ma ago; it is noted for major evolutionary changes in mammalian faunas, which are split between two land-mammal stages (Upper Villafranchian and Biharian).

Subjects: Biological Sciences.

Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.