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1920
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still image
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Cincinnati, IN
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Mazon Creek, Grundy Co., Ill., Coal Measures
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Search results
Search results
(1 - 4 of 4)
Title
Neuropteris
PID
grinnell:17028
Title
Neuropteris
PID
grinnell:17029
Title
Pecopteris
PID
grinnell:17049
Title
Pecopteris
PID
grinnell:17048