Four Orange Fossil Leaves on Rock (2 species) - Montana

This is an association of four fossil leaves from the Fort Union Formation of Montana. The color of the rock and the leaves is rather unusual, and different than most of the leaves seen from the Fort Union Formation. They were collected from a locality where a fire in a nearby coal seam "cooked" the rock at sometime in the past. This changed the color and gave it a chalky texture.

Leaf identification by #:

#12 - Carya antiquorum (Hickory leaf) - (3.6" & 5.4")
#28 - Persea sp. - (5.9")
#50 - Unidentified leaf

There are some areas of restoration on the surface of the leaves, where there was some flaking onto the negative during collection.