Oligocene epoch is known for
large running mammals reflects key principle in quiz on geological time scale+pyqs, where evolutionary mechanisms shape genetic variation and adaptation. In this context, large running mammals aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why large running mammals fits helps integrate natural selection, environment.
Ref: USGS, Geological Time Scale, Eons and Eras.