Eocene fossils from Messel, Germany, in Leiden, the Netherlands

This 2013 video about Germany says about itself:

Messel Pit is the richest site in the world for understanding the living environment of the Eocene, between 57 million and 36 million years ago. In particular, it provides unique information about the early stages of the evolution of mammals and includes exceptionally well-preserved mammal fossils, ranging from fully articulated skeletons to the contents of stomachs of animals of this period.

Source: UNESCO TV / © NHK Nippon Hoso Kyokai

The animals found in Messel played a role in the BBC TV series Walking with Beasts, about the Cenozoic era; the Messel fossils are early Cenozoic, from the Eocene.

Translated from Dutch daily Leidsch Dagblad:

In natural history museum Naturalis in Leiden, from 30 November on, people will be able to see 47 million year old fossils. The fossils were found in a quarry in the village of Messel, close to Darmstadt in Germany. …

The 125 fossils are in an excellent state. Sometimes, even hair or contents of the intestines can be discerned. The travelling exhibition ‘Messel on tour’ is property of the Hessisches Landesmuseum. Naturalis is the first museum where the fossils are going, before continuing their journey across Europe.

Climatic Chain Reaction Caused Runaway Greenhouse Effect 55 Million Years Ago: here.

Fossil Eocene parrots from Denmark: here.