Here is a fossil leaf of a ash from Montana of the species Fraxinus eocenica. This specimen from the Fort Union Formation is nice preserved and the rock shows an attractive reddish colour. The fossil leaf itself is about 51 mm long. | |||
Location: | Glendive, Montana, USA | ||
Size of plate: | about 83 x 61 mm | ||
Age: | Paleocene, Fort Union Formatio (about 56 Ma) |