original |
Late Carboniferous |
|
Illinois |
Sellards,E.H. On the fertile Fronds of Crossotheca and Myriotheca, and on the spores of other Carboniferous ferns, from Mazon Creek, Illinois |
1902 |
original |
Late Carboniferous |
|
Illinois |
Sellards,E.H. On the fertile Fronds of Crossotheca and Myriotheca, and on the spores of other Carboniferous ferns, from Mazon Creek, Illinois |
1902 |
original |
Late Carboniferous |
|
Illinois |
Sellards,E.H. On the fertile Fronds of Crossotheca and Myriotheca, and on the spores of other Carboniferous ferns, from Mazon Creek, Illinois |
1902 |
original |
Late Carboniferous |
|
Illinois |
Sellards,E.H. On the fertile Fronds of Crossotheca and Myriotheca, and on the spores of other Carboniferous ferns, from Mazon Creek, Illinois |
1902 |
details |
Nd |
|
Ohio |
Dawson,J.W. On spore-Cases in Coals. |
1871 |