Pennsylvanian-Age Calamitean Cones from What Cheer Locality, Iowa (Carboniferous of the United States)
Where: Keokuk County, Iowa (41.4° N, 92.3° W: paleocoordinates 3.7° S, 26.5° W)
• coordinate based on political unit
When: Pennsylvanian (323.2 - 298.9 Ma)
• Laddsdale Coal, (lower) Cherokee Group, Des Moines Series.
Environment/lithology: coal ball
Primary reference: C. W. Good. 1975. Pennsylvanian-Age Calamitean Cones, Elater-Bearing Spores, and Associated Vegetative Organs. Palaeontographica 153:28-99 [R. Gastaldo/J. Allen/M. Uhen]more details
Purpose of describing collection: taphonomic analysis
PaleoDB collection 13999: authorized by Robert Gastaldo, entered by Jonathan Allen on 08.05.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
unclassified | |
Polypodiopsida | |
Calamocarpon insignis Baxter 1963 | |
Calamitopsida | |
Arthroxylon spp. Reed 1952 |