Locality HA ("Lower San Angelo Fm.") (Permian to of the United States)

Also known as Pease River

Where: Hardeman County, Texas (34.1° N, 99.7° W: paleocoordinates 2.9° N, 28.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Flowerpot Shale Member (San Angelo Formation), Kungurian to Kungurian (279.3 - 268.8 Ma)

• "15 ft below top of section" (Olson & Beerbower, 1953)

•"Re-examination, after study of the Flower Pot-San Angelo relationship elsewhere, showed without question that Flower Pot assignment is correct. [...] The age of this is herewith corrected from the original San Angelo assignment to Flower Pot." (Olson, 1962)

•The terrestrial part of Olson's Flower Pot Formation is equivalent to the Flowerpot Member of the Upper San Angelo Formation (see Smith, 1974, University of Texas Bureau of Economic Geology, Report of Investigations No. 80)

Environment/lithology: fluvial; silty, sandy claystone and conglomerate

• for details see Olson (1962 p. 121 f.)

Size class: macrofossils

Collected by E. C. Olson in 1950

Primary reference: E. C. Olson and J. R. Beerbower. 1953. The San Angelo Formation, Permian of Texas, and its Vertebrates. Journal of Geology 61(5):389-423 [J. Mueller/T. Liebrecht/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 79694: authorized by Johannes Mueller, entered by Jana Dummasch on 18.03.2008, edited by Torsten Liebrecht

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Xenacanthiformes - Xenacanthidae
Xenacanthus sp. Beyrich 1848 elasmobranch
FMNH UF 508, teeth
Osteichthyes
 Anomodontia - Dimacrodontidae
Dimacrodon hottoni n. gen. n. sp.
Dimacrodon hottoni n. gen. n. sp. Olson and Beerbower 1953 therapsid
FMNH UR 145, 146 (type), 147
 Therapsida - Phthinosuchidae
Steppesaurus gurleyi n. gen. n. sp.
Steppesaurus gurleyi n. gen. n. sp. Olson and Beerbower 1953 therapsid
FMNH UR 148 (type)
 Caseasauria - Caseidae
Cotylorhynchus hancocki n. sp. Olson and Beerbower 1953 synapsid
FMNH UR 154 (type)
Reptilia
 Eureptilia - Captorhinidae
"Rothia multidonta n. gen. n. sp." = Rothianiscus multidonta
"Rothia multidonta n. gen. n. sp." = Rothianiscus multidonta Olson and Beerbower 1953 eureptile
FMNH UR 87 (type) , 129, 130