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Middle Pennsylvanian and are dated at about 307 MYO
The matrix contains an interesting assortment of dinosaur bone fragments
more popularly known by the name Oreodon (hillock teeth) endemic to North America during the Late Eocene-Early Miocene sub-epochs (38—16
Two additional species
Eocene Green River Seed Capsule P-PCM-16-054 Fern Fossil Middle Pennsylvanian and are datedSeed Capsules (aff Salix or Populus) Green River Formation Parachute Creek Member Middle Eocene Uintah County, Utah This specimen is a very fine example of seed capsules of the genus Salix or Populus. This example does not display any secondary branching as seen in Pseudosalix and therefore is probably related to either of the ascribed genera. The detail of this specimen is very good and has good relief. The upper part of the Green River Formation in
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