Spencer Farm Flora: Mississippian, Illinois
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
unclassified
|
|||||||
|
Holcospermum sp.
Nathorst 1914
|
|||||||
|
Lesleya cheimarosa n. sp.
|
|||||||
|
Rhodeopteridium phillipsii n. sp.
|
|||||||
|
Pteropsida
|
|||||||
|
Alethopteris lonchitica
|
|||||||
| spelled with current rank as Pecopteris (Alethopteris) | |||||||
|
unclassified
|
|||||||
|
Megalopteris dawsoni
(Hartt 1868)
|
|||||||
|
Dactylotheca aspera
|
|||||||
|
Polypodiopsida
- Equisetales
|
|||||||
|
Annularia cf. vernensis
|
|||||||
|
Annularia cf. asteris
|
|||||||
|
Polypodiopsida
- Equisetales
- Calamitaceae
|
|||||||
|
Asterophyllites longifolius
|
|||||||
|
Asterophyllites cf. equisetiformis
|
|||||||
|
Mesocalamites cf. cistiiformis
|
|||||||
| spelled with current rank as Calamites (Mesocalamites) | |||||||
|
Calamostachys andanensis
|
|||||||
|
Polypodiopsida
- Hymenophyllales
- Hymenophyllaceae
|
|||||||
|
Eusphenopteris morrowensis
|
|||||||
|
Cordaitales
|
|||||||
|
Cordaicarpus sp.
Geinitz 1862
|
|||||||
|
Cordaicarpus sp.
Geinitz 1862
|
|||||||
|
Gigantopteridales
- Gigantopteridaceae
|
|||||||
|
Megalopteris ovata
|
|||||||
| replaced by Gigantopteris | |||||||
|
unclassified
|
|||||||
|
Lagenospermum sp.
Nathorst 1914
|
|||||||
|
Lacoea seriata
Read 1946
|
|||||||
|
Ginkgoopsida
- Callistophytales
|
|||||||
|
cf. Eremopteris sp.
Schimper 1869
|
|||||||
|
Lepidodendrales
- Lepidodendraceae
|
|||||||
|
Lepidodendron wortheni
|
|||||||
|
Sphenopteridae
|
|||||||
|
Sphenopteris preslesensis
|
|||||||
|
Gulpenia limburgensis
Gothan and Jongmans 1927
|
|||||||
|
unclassified
|
|||||||
|
Alloiopteris gracillima
|
|||||||
|
Alloiopteris cf. quercifolia
Goeppert 1897
|
|||||||
|
Archaeopteridopsida
- Archaeopteridales
- Archaeopteridaceae
|
|||||||
|
Palaeopteridium reussii
|
|||||||
|
Medullosaceae
|
|||||||
|
cf. Mariopteris sp.
Zeiller 1879
|
|||||||
|
Coniferales
|
|||||||
|
Samaropsis sp.
Göppert 1864
|
|||||||
|
Samaropsis sp.
Göppert 1864
|
|||||||
|
Samaropsis sp.
Göppert 1864
|
|||||||
|
Pinopsida
- Cordaitanthales
|
|||||||
|
Cordaites cf. principalis
|
|||||||
|
unclassified
|
|||||||
|
Telangiopsis sp.
Eggert and Taylor 1971
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Illinois | County: | Brown |
| Coordinates: | 40.0° North, 90.0° West (view map) | ||||
| Paleocoordinates: | 14.1° South, 34.4° West |
Time
| Period: | Carboniferous | Epoch: | Mississippian |
| 10 m.y. bin: | Carboniferous 1-3 | ||
| *Period: | Early/Lower Carboniferous | ||
| Key time interval: | Mississippian | ||
| Age range of interval: | 358.90000 - 323.20000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
Lithology and environment
| Primary lithology: | argillaceous siltstone |
| Secondary lithology: | sandstone |
Taphonomy
| Modes of preservation: | adpression |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taphonomic analysis |
| Collection method comments: Specimens used are currently in the collections of the Illinois State Museum. | |
Metadata
| Database number: | 13511 | ||
| Authorizer: | R. Gastaldo | Enterer: | J. Allen |
| Modifier: | J. Allen | Research group: | paleobotany |
| Created: | 2002-04-10 10:49:56 | Last modified: | 2002-12-28 14:40:30 |
| Access level: | the public | Released: | 2002-04-10 10:49:56 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 5996. | 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] |