oligocene

• Nom propre désignant une époque géologique qui a duré d'environ 40 à 25 millions d'années, connue pour l'apparition des chats à dents de sabre.

A proper noun referring to a geological epoch that lasted from approximately 40 million to 25 million years ago, known for the appearance of sabertoothed cats.

indénombrable · nom propre

1. C2formalscientific

   A geological epoch that lasted from approximately 34 million to 23 million years ago, characterized by the appearance of early sabertoothed cats and the spread of grasslands.

   Oligocène

   • The Oligocene epoch saw the rise of many modern mammal groups.
   • Fossils from the Oligocene include early species of elephants and horses.
   • During the Oligocene, the climate became cooler and drier, leading to the expansion of grasslands.