Spencer Farm Flora (Carboniferous of the United States)

Where: Brown County, Illinois (40.0° N, 90.0° W: paleocoordinates 14.1° S, 34.4° W)

When: Mississippian (358.9 - 323.2 Ma)

Environment/lithology: argillaceous siltstone and sandstone

Preservation: adpression

Collection methods: Specimens used are currently in the collections of the Illinois State Museum.

Primary reference: R. Leary and H. W. Pfefferkorn. 1977. An Early Pennsylvanian Flora with Megalopteris and Noeggerathiales from West-Central Illinois. Illinois State Geological Survey 1-77 [R. Gastaldo/J. Allen/J. Allen]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 13511: authorized by Robert Gastaldo, entered by Jonathan Allen on 10.04.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Lagenospermum
  -
Lagenospermum sp. Nathorst 1914
Lacoea seriata
  -
Lacoea seriata Read 1946
 Gigantopteridales - Gigantopteridaceae
"Megalopteris ovata" = Gigantopteris
"Megalopteris ovata" = Gigantopteris
Ginkgoopsida
 Callistophytales -
cf. Eremopteris sp. Schimper 1869
 Cordaitales -
Cordaicarpus sp. Geinitz 1862
 Lepidodendrales - Lepidodendraceae
Pteropsida
 Filicinae -
"Alethopteris lonchitica" = Pecopteris (Alethopteris)
"Alethopteris lonchitica" = Pecopteris (Alethopteris)
Megalopteris dawsoni
  -
Polypodiopsida
 Equisetales - Equisetidae
 Hymenophyllales - Polypodiidae
Dactylotheca
  -
Alloiopteris
  -
Alloiopteris quercifolia
  -
Sphenopteridae
  - Sphenopteridae
Holcospermum
  -
Holcospermum sp. Nathorst 1914
 Coniferales -
Samaropsis sp. Göppert 1864
Pinopsida
 Cordaitanthales -
Telangiopsis
  -
Telangiopsis sp. Eggert and Taylor 1971
Rhodeopteridium
  -
 Radiatopses - Medullosaceae
cf. Mariopteris sp. Zeiller 1879
Archaeopteridopsida
 Archaeopteridales - Archaeopteridaceae