Late Eocene

Reconstruction of a Mesonyx

Reconstruction of a Basilosaurus

Merycoidodon, extinct genus of a herbivorous artiodactyl

Megacerops, extinct genus of odd-toed ungulates

Palaeomastodon, extinct genus of Proboscidea

Metamynodon, extinct genus of amynodont rhino

Arsinotherium, extinct genus of paenungulate mammal

Hyaenodon, extinct genus of carnivorous mammals

Brontops robustus or Megacerops robustus

Basilosaurus cetoides, prehistoric whale