1 Talk Middle Eocene Edit Fossil Record The faunal stages Lutetian and Bartonian typically are referred to as the Middle Eocene. This article is a stub. You can help Fossil Wiki by expanding it. Read more The Mustersan age is a period of geologic time (48.0—42.0 Ma) within the Eocene epoch of the... Mustersan The Ypresian is the first stage of the Eocene Epoch and usually corresponds to the Early Eocene... Ypresian MP 21 is a zone during the Priabonian stage of the Eocene and is part of the Mammal Paleogene zone. MP 21 Related Categories Categories: Article stubs | Eocene Add category