BC-7 (Chickasha Formation) (Permian to of the United States)

Also known as Chickasha Tongue; Flowerpot Shale; Flowerpot Formation

Where: Blaine County, Oklahoma (36.0° N, 98.4° W: paleocoordinates 4.6° N, 26.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Chickasha Formation (El Reno Group), Roadian to Roadian (272.3 - 264.3 Ma)

• "All the deposits are in that part of the Chickasha Formation delineated by Fay (1962) as the Chickasha Tongue within the Flowerpot Formation. The tongue contains four mapped beds, numbered consecutively from 1 (lowest) to 4 (highest)" "The beds are mainly between beds 2 and 3 of the Chickasha Tongue." A measured section consisiting of five typical beds is given for BC-7.

•Minimum age originally entered as >> Capitanian <<. These beds, however, are likely to be older (see, e.g., Reisz & Laurin, 2002, 114(9)).

• group of beds-level stratigraphic resolution

Environment/lithology: deltaic; concretionary, shelly/skeletal, green, conglomeratic, carbonaceous sandstone and red shale

• "The vertebrate fauna in the Chickasha deposits lived on a delta marginal to the sea in which the deposits of the El Reno Group were formed."
• "In section 34 is a complex of green sandstone and conglomerate which carries large nodules with bones and plants." "red shale specimen...and one of the specimens from the hard, green sandstone of the site, however, were deposited as complete skeletons...suffered considerable from the effects of diagenesis and weathering."

Size class: macrofossils

Preservation: concretion

Collected in 1963, 1972; reposited in the FMNH, UCMP

• Fayella chickashaensis, n. sp. is from hard, green sandstone of bed 2 of measured section at BC-7.

•Rothia robusta, n. sp. from approx. bed 2 of the Chickasha Tongue.

•Five sites in BC-7 have yielded badly weathered specimens of ?Tappenosauridae indet. (bone bearing lithologies include, red shale, low green sandstone section, and siltstone).

•The holotype of Watongia meieri was collected in 1972. It "was found somewhat scattered in red, sandy shale" (Olson, 1974). Nothing is said about the exact horizon, but since Olson (1974) states that "about the same level in this site have been found specimens of Rothianiscus and Cotylorhynchus" it appears that the beds are identical to those from which the older collections were made.

Primary reference: E. C. Olson. 1965. New Permian vertebrates from the Chickasha Formation in Oklahoma. Circular Oklahoma Geological Survey 70:1-70 [C. Sidor/C. Sidor/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27475: authorized by John Alroy, entered by Robin Whatley on 06.12.2002, edited by Torsten Liebrecht

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Caseasauria - Caseidae
Caseidae indet. Williston 1911 synapsid
CNHM UR 985 (large humerus) "pertain either to Cotylorhynchus or Angelosaurus"
Cotylorhynchus bransoni Olson and Barghusen 1962 synapsid
CNHM UR 984 (humerus), 988 (base of pelvis)
 Synapsida - Tappenosauridae
? Tappenosauridae indet. Olson and Beerbower 1953 synapsid
CNHM UR 973-976, 987; "New Genus, Not Named"
 Synapsida - Varanopidae
Watongia meieri n. gen. n. sp.
Watongia meieri n. gen. n. sp. Olson 1974 synapsid
UCMP 143278 (type, formerly UCLA VP 3132)
Reptilia
 Eureptilia - Captorhinidae
"Rothia robusta n. sp." = Rothianiscus robusta
"Rothia robusta n. sp." = Rothianiscus robusta Olson 1965 eureptile
CNHM UR 963-965, 966 (type), 967, 989; 1 almost complete skeleton, 1 lower jaw, 1 juvenile limb, 2 single vertebrae, 2 (articulated?) sacrals
Amphibia
 Temnospondyli - Dissorophidae
Fayella chickashaensis n. gen. n. sp.
Fayella chickashaensis n. gen. n. sp. Olson 1965 tetrapod
CNHM UR 1003, 1004 (type)
unclassified
  -
Plantae indet. Haeckel 1866