link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
---|---|---|---|---|---|
details | Early Pennsylvanian | Michigan | Arnold,C.A. Megaspores from the Michigan Coal Basin. | 1950 | |
details | Carboniferous | Michigan | Arnold,C.A. An Introduction to Paleobotany. | 1947 |