Manuscript entitled, Fossil Flora and Fauna of the Pennsylvanian Period, Will County, Illinois
by George Langford (1876-1964)
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Mariopteris, pp 68-70.

Page
Topic
68
Sketches of Mariopteris leaves, copied from Brongniart by GL.
69
Mariopteris obovata, M. nervosa, M. cordatop-ovate M. plumosa, M. decipiens, and M. wilmingtonense, new species.
70
Mariopteris wilmingtonense, new species, M. nervosa, M. plumosa, Mariopteris - new species, and M. anthrapolis - new species.