With Oldrich Fejfar he reconsidered the famous dormouse skeleton from the early Oligocene
volcanic strata of Valec-Waltsch (Bohemia).
 have pointed out that sediments in the Huadian Basin were deposited in the Eocene, while Meng  has found out that sediments in the Huadian Basin were accumulated in the Eocene to Early Oligocene
, based on pollen records.
This material documents all the elements of both the carapace and the plastron of the taxon represented in this early Oligocene
Larger Foraminiferal Biostratigraphy of the Qom Formation, South of Uromieh (NW Iran).
The Qatar Arch and the western part of Abu Dhabi were up-lifted in the Early Oligocene
and part of the Eocene was eroded.
New skeleton from the early Oligocene
of Germany indicates a stem-group position of diomedeoidid birds.
In the early Oligocene
(Rupelian), only three occurrences are known, one from Alaska, USA (Wahrhaflig et al.
The earliest catarrhines in the fossil record, creatures that were neither monkey nor ape, date back to the late Eocene to early Oligocene
epochs, 35 to 30 million years ago.
Here we report two genera and at least four species of small erycine snakes from the Early Oligocene
of the Badlands National Park in South Dakota.