Where: Jackson County, Michigan (42.3° N, 84.4° W: paleocoordinates 5.7° S, 20.8° W)

When: Saginaw Group, Pennsylvanian (323.2 - 298.9 Ma)

• Found in ironstone and shale found only in place at the Grand Ledge localiy, assumed that these pieces were carried by ice from near there to the Jackson site.

Environment/lithology:

Preservation: adpression

Primary reference: C. A. Arnold. 1949. Fossil Flora of the Michigan Coal Basin. Contributions from the Musuem of Paleontology: University of Michigan 7(9):131-269 [R. Gastaldo/J. Allen]more details

PaleoDB collection 10778: authorized by Robert Gastaldo, entered by Jonathan Allen on 22.06.2001

Creative Commons license: CC BY (attribution)