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5 Specimen Results
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Genus:
Alethopteris
State/Province:
Illinois
FHSM PB-276
Alethopteris serli
(White)
Formation:
Mazon Creek
Period(Early):
Pennsylvanian
FHSM PB-271
Alethopteris serli
(White)
Formation:
Mazon Creek
Period(Early):
Pennsylvanian
FHSM PB-266
Alethopteris serli
(White)
Formation:
Mazon Creek
Period(Early):
Pennsylvanian
FHSM PB-211
Alethopteris serli
(White)
Formation:
Mazon Creek
Period(Early):
Pennsylvanian
FHSM PB-210
Alethopteris serli
(White)
Formation:
Mazon Creek
Period(Early):
Pennsylvanian
Next 36
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Phylum
Pteridophyta (5)
Order
Trigonocarpales (5)
Family
Alethopteridaceae (5)
Individual/Organization
Sternberg, G.F. (3)
Mrs. Danforth, F. (2)
Period
Pennsylvanian (5)
Formation
Mazon Creek (5)
Country
United States of America (5)
County
Grundy (5)