Pinus driftwoodensis is an extinct species of conifer in the pine family solely known from early Eocene sediments exposed in south central British Columbia.

Fothergilla durhamensis described from Eocene sediments in King County, Washington is considered dubious in placement.

The soil is Eocene sediments overlying clay or ironstone gravel derived from the Albany-Fraser Orogen.

All three species were described from Eocene aged sediments.

Directly overlying the Eocene sediments and another erosional unconformity are sands of Oligocene and Early Miocene age.

The species is known from the late Eocene sediments exposed in the state of Oregon in the US.

Paleogene and Early Eocene marine sediments that outcrop on Seymour Island contains plant-rich horizons.

The species is solely known from the Early Eocene sediments exposed in northeast Washington State, USA.

The species is known from the latest Eocene sediments exposed in the state of Montana, USA.

All that is known about Andrewsarchus comes chiefly from the single meter-long skull found in Late Eocene sediments in what is now Mongolia.