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
Show authors, comments, and common names
unclassified | |
Lesleya cheimarosa n. sp.
Lesleya cheimarosa n. sp. | |
Pinopsida | |
Samaropsis sp. Göppert 1864 | |
Archaeopteridopsida | |
cf. Mariopteris sp. Zeiller 1879 | |
Lacoea seriata | |
Lacoea seriata Read 1946 | |
Lagenospermum | |
Lagenospermum sp. Nathorst 1914 | |
"Megalopteris ovata" = Gigantopteris
"Megalopteris ovata" = Gigantopteris | |
Ginkgoopsida | |
cf. Eremopteris sp. Schimper 1869 | |
Cordaicarpus sp. Geinitz 1862 | |
Sphenopteridae | |
Gulpenia limburgensis Gothan and Jongmans 1927 | |
Pteropsida | |
"Alethopteris lonchitica" = Pecopteris (Alethopteris)
"Alethopteris lonchitica" = Pecopteris (Alethopteris) | |
Megalopteris dawsoni | |
Megalopteris dawsoni Hartt 1868 | |
Polypodiopsida | |
Asterophyllites longifolius, Asterophyllites cf. equisetiformis, "Mesocalamites cf. cistiiformis" = Calamites (Mesocalamites), Calamostachys andanensis, Annularia cf. vernensis, Annularia cf. asteris
"Mesocalamites cf. cistiiformis" = Calamites (Mesocalamites) | |
Dactylotheca | |
Holcospermum | |
Holcospermum sp. Nathorst 1914 | |
Alloiopteris | |
Alloiopteris quercifolia | |
Alloiopteris cf. quercifolia Goeppert 1897 | |
Telangiopsis | |
Telangiopsis sp. Eggert and Taylor 1971 | |
Rhodeopteridium | |
Rhodeopteridium phillipsii n. sp.
Rhodeopteridium phillipsii n. sp. |