Pay in 4 interest-free payments of $15.00 Learn more
Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
Its ancestors date back to the Eocene and its last descendants are known from the Pliocene
The holotype
The transition to root is not visible at the base of the specimen
This specimen is the most perfectly preserved Notogoneus from our many years of collecting Green River fossils
Professor Othniel Charles Marsh
Eocene Green River Undescribed Birthwort P-PCM-16-062 Eocene Its ancestors date back toUndescribed Birthwort Green River Formation Middle Eocene Lincoln County, Wyoming This fine example is interpreted to be an undescribed Birthwort leaf possible from the family Aristolochiaceae. This specimen is a complete leaf but is folded. Birthworts (also known as pipevine or Dutchman's pipe) are perennial herbaceous plants, shrubs, and vines. There are about 400 living specie today. These plant leaves are rare in the Green River Formation. This