Manuscript entitled, Fossil Flora and Fauna of the Pennsylvanian Period, Will County, Illinois
by George Langford (1876-1964)
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Odontopteris - Neuropteroid type, O. genuina; O. reichana, and O. obtusa; and Odontopteris minor compared with Pecopteris obliqua. page 65.
Note: the scan of the original page 65 is here.
The original page was letter size but the image may have been cropped slightly.
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Odontopteris, Neuropteroid type.
Odontopteris minor - Pecopteris obliqua.
Odontopteris genuina.
Seed ferns: Odontopteris reichana; O. obtusa.
Odontopteris, Neuropteroid type, GL photographs and sketch, page 65
Pecopteris obliqua; Odontopteris minor, GL photographs and sketches, page 65
Odontopteris genuina, GL photograph, page 65
Seed ferns: odontopteris reichana; O. obtusa, GL photographs, page 65