Bluff Bonebed of Udden, 27 (Waggoner Ranch Formation) (Permian to of the United States)

Also known as Locality 27 (Romer 1928), Clyde Formation, faunal Zone 3, Upper Wichita Group, Texas red-beds, redbeds, Udden

Where: Baylor County, Texas (33.8° N, 98.7° W: paleocoordinates 1.4° N, 28.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Waggoner Ranch Formation (Wichita Group), Artinskian to Artinskian (290.1 - 272.3 Ma)

• "65 feet above the Beaverburk" Limestone. Details for Faunal Zone 3 of Romer 1928: "approximately 230 feet in thickness...The total thickness of the Wichita group, as thus defined is, in this region, approximately 780 feet." Clyde Formation is approx. equivalent to Waggoner Ranch Formation (Hetz and Brown 1987).

•the Waggoner Ranch Formation is equivalent to the Bead Mountain through Lueders formations (Tabor et al. 2002), which are late Artinskian and early Kungurian according to Wardlaw 2005, Permophiles (JA)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; limestone and red, blue shale

• "limestones, often impure, with blue and red shales."

Size class: macrofossils

Collection methods: 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 28241: authorized by John Alroy, entered by Robin Whatley on 02.02.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

• Invertebrates and plants are present at this locality.
unclassified
  -
Plantae indet. Haeckel 1866
Amphibia
 Temnospondyli - Eryopidae
Eryops sp. Cope 1877 tetrapod
 Temnospondyli - Trimerorhachidae
Trimerorhachis sp. Cope 1878 tetrapod
entered as "Trimerorachis"
 Nectridea - Diplocaulidae
Diplocaulus sp. Cope 1877 tetrapod
Osteichthyes
 Synapsida - Sphenacodontidae
Dimetrodon sp. Cope 1878 synapsid
 Synapsida - Ophiacodontidae
"Theropleura sp." = Ophiacodon
"Theropleura sp." = Ophiacodon Marsh 1878 ophiacodont
 Cotylosauria - Diadectidae
Diadectes sp. Cope 1878 tetrapod