Godwin Creek, 14 (Admiral Formation) (Permian of the United States)

Also known as Locality 14 (Romer 1928), Locality IVe (Romer & Price 1940), Southeast side of Godwin creek, faunal Zone 1, Wichita Group, Texas red-beds, redbeds

Where: Archer County, Texas (33.6° N, 98.9° W: paleocoordinates 0.0° N, 29.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Admiral Formation (Wichita Group), Artinskian (290.1 - 279.3 Ma)

• "The horizon is about 250-300 feet above the base of the formation." Details for Faunal Zone 1 of Romer 1928: "These beds [estimated thickness of 350 feet] occupy the middle portion of the Wichita as Cummins conceived of it; but they are now seen to occupy the lower part of this group. This zone is approximately equivalent to the Admiral Formation of Plummer and Moore (1921), although no definite correlation can be made at present." Lower Permian stratigraphy for Texas was modified by Hentz (1988).

•the Admiral Formation is entirely Artinskian according to Wardlaw 2005, Permophiles (JA)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; red, argillaceous, sandy shale

• terrestrial and near-shore deposition
• red-beds, "a series of typical red beds, consisting of clays, sandstone and shales, mostly red in color, and devoid of limestones."

Size class: macrofossils

Reposited in the AMNH, FMNH, MCZ

• Romer (1928) paper is a review of vertebrates from the Texas red-beds with previously unreported (or undetailed) localities.

Primary reference: A. S. Romer. 1928. Vertebrate faunal horizons in the Texas Permo-Carboniferous red beds. University of Texas Bulletin 2801:67-108 [J. Alroy/R. Whatley/W. Clyde]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28150: authorized by John Alroy, entered by Robin Whatley on 25.01.2003, edited by Torsten Liebrecht and Emma Dunne

Creative Commons license: CC BY (attribution)

Taxonomic list

Amphibia
 Temnospondyli - Eryopidae
Eryops sp. Cope 1877 tetrapod
 Temnospondyli - Trimerorhachidae
Trimerorhachis sp. Cope 1878 tetrapod
entered as "Trimerorachis"
Osteichthyes
 Cotylosauria - Diadectidae
Diadectes sp., "Empedias fissus n. sp." = Diadectes sideropelicus
Diadectes sp. Cope 1878 tetrapod
"Empedias fissus n. sp." = Diadectes sideropelicus Cope 1878 tetrapod
Authority is not Romer 1928.
 Cotylosauria -
Archeria sp.1 Case 1918 tetrapod
MCZ 1730 and 2083
 Synapsida - Ophiacodontidae
Ophiacodon retroversus2 Cope 1878 ophiacodont
FMNH (WM) 9, 459; AMNH 4620 (part), 4826; MCZ 1451 (part), 1561
Ophiacodon uniformis2 Cope 1878 ophiacodont
 Synapsida - Sphenacodontidae
Dimetrodon sp. Cope 1878 synapsid
 Embolomera - Archeriidae
Cricotus sp. Cope 1875 tetrapod