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52 Specimen Results
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Formation: Period:
FHSM PB-194

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-195

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-196

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-197

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-198

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-199

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-200

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-201

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-202

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-203
Pecopteris (Brongniart, 1822)
Formation: Mazon Creek;Mazon Creek
Period(Early): Pennsylvanian;Pennsylvanian

FHSM PB-204
Pecopteris vestita (Lesquereux)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-205
Annularia (Sternberg, 1821)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-205A

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-205B

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-206

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-207
Neuropteris decipiens (Lesquereux )
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-208

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-209
Codonotheca caduca (Sellards, 1903)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-210
Alethopteris serli (White)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-211
Alethopteris serli (White)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-212
Pecopteris vestita (Lesquereux)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-213
Annularia (Sternberg, 1821)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-214
Annularia (Sternberg, 1821)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-215
Pecopteris vestita (Lesquereux)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-216
Pecopteris vestita (Lesquereux)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-217
Pecopteris vestita (Lesquereux)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-218

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-219

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-220

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-221

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-222

Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-265
Pecopteris (Brongniart, 1822)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-266
Alethopteris serli (White)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-267
Neuropteris decipiens (Lesquereux )
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-268
Annularia (Sternberg, 1821)
Formation: Mazon Creek
Period(Early): Pennsylvanian

FHSM PB-269
Neuropteris decipiens (Lesquereux )
Formation: Mazon Creek
Period(Early): Pennsylvanian

Next 36

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Phylum

Pteridophyta (34)

Order

Equisetales (9)
Marattiales (12)
Trigonocarpales (13)

Family

Alethopteridaceae (5)
Calamitaceae (9)
Marattiaceae (12)
Medullosaceae (8)

Genus

Alethopteris (5)
Annularia (9)
Codonotheca (2)
Neuropteris (6)
Pecopteris (12)

has media

Has media (1)
Has no media (51)

Individual/Organization

Sternberg, G.F. (18)
Mrs. Danforth, F. (34)
Bures, J. (1)

Period

Pennsylvanian (53)

Formation

Mazon Creek (53)

Country

United States of America (52)

State/Province

Illinois (52)

County

Grundy (52)
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