Promontory Butte, Mogollon Rim flora (DUPLICATE) (Permian to of the United States)

Where: Gila County, Arizona (34.2° N, 111.0° W: paleocoordinates 3.1° N, 39.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Supai Formation, Asselian to Asselian (298.9 - 290.1 Ma)

• stratigraphically equivalent to Abo Formation and Wolfcamp series

• formation-level stratigraphic resolution

Environment/lithology: fine channel fill; lithified, gray, argillaceous shale

• dark-gray argillaceous mudstone-shale, one to three meters thick...effervesce vigorously in cold 10 percent HCl...numerous pyrite crystals...conchoodal fracturing.

Size class: macrofossils

Preservation: adpression

Collection methods: quarrying, surface (in situ),

Primary reference: E. B. Blazey. 1974. Fossil flora of the Mogollon Rim, central Arizona. Palaeontographica Abteilung B 146(1-2):1-20 [A. Rees/D. Sunderlin/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 23165: authorized by Allister Rees, entered by Dave Sunderlin on 10.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Neuropteridae
  - Neuropteridae
Pinopsida
 Pinales -
 Cordaitanthales -
Pteropsida
 Filicinae -
Polypodiopsida
 Equisetales - Equisetidae
Neuropteris heterophylla
  -
"Neuropteris heterophylla" = Imparipteris heterophylla
"Neuropteris heterophylla" = Imparipteris heterophylla Brongniart 1825
Cycadopsida
 Cycadales -
Taeniopteris sp. Brongniart 1828 cycads
Walchia
  -
Sphenopteridae
  - Sphenopteridae
 Radiatopses - Medullosaceae
Peltaspermopsida
 Peltaspermales - Peltaspermaceae
Equisetopsida
 Sphenophyllales -
Alloiopteris
  -
Palaeostachya
  -
Palaeostachya sp. Weiss 1876