Tatman Formation

The Tatman Formation is a Wasatchian geologic formation in Wyoming. It preserves fossils dating back to the Ypresian stage of the Eocene period.

Fossil content
The following fossils have been recovered from the formation:

Flora

 * Allantoidiopsis erosa
 * Cercidiphyllum genetrix
 * Cnemidaria magna
 * Dombeya novimundi
 * Eugenia americana
 * Lygodium kaulfussi
 * Platanus wyomingensis
 * Platycarya castaneopsis
 * Populus meigsii
 * Salvinia preauriculata
 * Thelypteris iddingsii
 * Zingiberopsis isonervosa
 * Alnus sp.
 * Equisetum sp.
 * aff. Typha sp.
 * Alismataceae indet.
 * Monocotyledoneae indet.