Eocene Green River Unidentified Aquatic Plant P-GRP2-16-019 Pleistocene No fossil leaves associated with

No fossil leaves associated with this family have been identified in the Green River Formation yet

Here is a tooth of the Jurassic crocodile Amphicotylus

In the base of the Sinemurian Stage

Seeds are visible within the capsule as the darker carbonized residue

a relative to the walnut

Eocene Green River Unidentified Aquatic Plant P-GRP2-16-019 Pleistocene No fossil leaves associated withUnidentified Aquatic Plant Ceratophyllum (?) Green River Formation Middle Eocene Lincoln County, Wyoming This specimen is a section of an aquatic plant with possible affinities to Ceratophyllum. The segment is 4 cm long and appears to have a spiral arrangement of the leaflets.