Lohoodon lived during the middle Eocene and was named by Chow et al.

They abruptly died out by the middle Eocene.

Dating has proven this genus lived from 40 to 45 million years ago in the middle Eocene.

Fossils have been found from Belgium and date back to the middle Eocene.

Paleosyops is a genus of small brontothere which lived during the early to middle Eocene.

This clade appears to have originated in the middle Eocene.

It is known from the middle Eocene of eastern Kazakhstan.

Heteronectes is found in the early to middle Eocene of France.

Hapalorestes lived during the early to middle Eocene and were the largest of the Hapalodectids.

This move to the north may be associated with climatic warming between the early and the middle Eocene.