Title: Lycopsid stems and roots and sphenopsid fructifications and stems from the upper Freeport coal of southeastern Ohio
First published: 1968
Subjects: Fossil Plants, Paleobotany, Plants, Fossil
Places: Ohio
Time periods: Pennsylvanian
LC classification: QE701 .I82 v. 6, no. 38, QE971 .I82 v. 6, no. 38