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

unclassified
  -
Polypodiopsida
 Equisetales - Equisetidae
Calamitopsida
 Calamitales -
Arthroxylon spp. Reed 1952