Eocene Green River Unidentified Leaf P-GRP2-16-026 Herbivorous Dinosaur the 2015 study concluded that

the 2015 study concluded that Brontosaurus was a valid genus of sauropod distinct from Apatosaurus

In general the impression from the upper Green River are highly variable in shape

metacarpal

It shows a beautiful and prominent wear facet

It is an aquatic insect that had a very light-weight body and long legs that allow them to live on the surface of the water

Eocene Green River Unidentified Leaf P-GRP2-16-026 Herbivorous Dinosaur the 2015 study concluded thatUnidentified Leaf Green River Formation Middle Eocene Lincoln County, Wyoming This unidentified leaf has well defined palmate venation. The leaf is 7. 5 cm and was collected from the 18 inch layer.