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There are as many as 250 living species in the genus Rhus
Two additional species
they have been discovered in other members of the diplodocid family as well as in non-diplodocid sauropods
530 acres) Petrified Forest National Park
Middle Pennsylvanian and are dated at about 307 MYO
Eocene Green River Seed Capsule P-PCM-16-054 Fern Fossil There are as many asSeed 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