Paraentelodon is an extinct entelodont from the Late Oligocene of Eurasia.

Another Paleogene bird genus sometimes considered an anseranatid is Anserpica, from the Late Oligocene of Billy-Créchy (France).

Hokkaidornis is an extinct genus of penguin-like plotopterid from the Late Oligocene of Hokkaido, Japan.

The subtribes probably diverged in the early to mid-Oligocene, as primitive marmots and chipmunks are known from the Late Oligocene of North America.

Other Paleogene birds sometimes considered magpie-geese are the genera Geranopsis from the Hordwell Formation Late Eocene to the Early Oligocene of England and Anserpica from the Late Oligocene of Billy-Créchy (France).

They are Murunkus (Middle Eocene of Uzbekistan), Manu (early Oligocene of New Zealand), and an undescribed form from the Late Oligocene of South Carolina.

The type species B. darrowi is known from the Middle Miocene of the Northern Territory and is the largest reaching size of 4-5 m in length, whilst two older species, B. huberi and B. wickeni are known from the Late Oligocene of Queensland.

The first occurred during the Late Oligocene through Early Miocene and the second episode occurred in Early Pliocene and into Late Pleistocene according to Williams et al.

Fossil remains date back to the Late Oligocene of what is now New Zealand, and is the first fossil lampridiform found in the Southern Hemisphere.

Ilaria is an extinct genus of marsupial of the family Ilariidae, dating from the Late Oligocene of South Australia.