PBDB Collection

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

Rhodeopteridium
-	Rhodeopteridium phillipsii n. sp. Rhodeopteridium phillipsii n. sp.
Pteropsida
Filicinae -	"Alethopteris lonchitica" = Pecopteris (Alethopteris) "Alethopteris lonchitica" = Pecopteris (Alethopteris)
Megalopteris dawsoni
-	Megalopteris dawsoni Megalopteris dawsoni Hartt 1868
Dactylotheca
-	Dactylotheca aspera Dactylotheca aspera
Polypodiopsida
Equisetales - Equisetidae	Asterophyllites longifolius, Asterophyllites cf. equisetiformis, "Mesocalamites cf. cistiiformis" = Calamites (Mesocalamites), Calamostachys andanensis, Annularia cf. vernensis, Annularia cf. asteris Asterophyllites longifolius Asterophyllites cf. equisetiformis "Mesocalamites cf. cistiiformis" = Calamites (Mesocalamites) Calamostachys andanensis Annularia cf. vernensis Annularia cf. asteris
unclassified
-	Lesleya cheimarosa n. sp. Lesleya cheimarosa n. sp.
Polypodiopsida
Hymenophyllales - Polypodiidae	Eusphenopteris morrowensis Eusphenopteris morrowensis
Holcospermum
-	Holcospermum sp. Holcospermum sp. Nathorst 1914
Sphenopteridae
- Sphenopteridae	Sphenopteris preslesensis, Gulpenia limburgensis Sphenopteris preslesensis Gulpenia limburgensis Gothan and Jongmans 1927
Pinopsida
Cordaitanthales -	Cordaites cf. principalis Cordaites cf. principalis

Coniferales -	Samaropsis sp. Samaropsis sp. Göppert 1864
Radiatopses - Medullosaceae	cf. Mariopteris sp. cf. Mariopteris sp. Zeiller 1879
Archaeopteridopsida
Archaeopteridales - Archaeopteridaceae	Palaeopteridium reussii Palaeopteridium reussii
Telangiopsis
-	Telangiopsis sp. Telangiopsis sp. Eggert and Taylor 1971
Alloiopteris
-	Alloiopteris gracillima Alloiopteris gracillima
Alloiopteris quercifolia
-	Alloiopteris cf. quercifolia Alloiopteris cf. quercifolia Goeppert 1897
Ginkgoopsida
Callistophytales -	cf. Eremopteris sp. cf. Eremopteris sp. Schimper 1869

Cordaitales -	Cordaicarpus sp. Cordaicarpus sp. Geinitz 1862
Lepidodendrales - Lepidodendraceae	Lepidodendron wortheni Lepidodendron wortheni
Gigantopteridales - Gigantopteridaceae	"Megalopteris ovata" = Gigantopteris "Megalopteris ovata" = Gigantopteris
Lacoea seriata
-	Lacoea seriata Lacoea seriata Read 1946
Lagenospermum
-	Lagenospermum sp. Lagenospermum sp. Nathorst 1914