LACMIP 2548, Arrow Canyon, Bed 237 (Permian of the United States)

Where: Clark County, Nevada (36.7° N, 114.8° W: paleocoordinates 10.1° N, 38.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Schwagerina cf. crebrisepta foram zone, Bird Spring Formation, Artinskian (290.1 - 279.3 Ma)

• Bse formation is an informal formation of the Bird Spring Group at Arrow Canyon, defined by Langeheim and Langenheim (1963). This unit is placed in the Zone of Schwagerina cf. S.crebrisepta by Stevens et al. (1979), which dates this unit as the middle part of the Wolfcampian. Also, this unit is part of the widespread, informally recognized Early Permian "coral bed" of the eastern Great Basin.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

• The Permian part of the Bird Spring Group in Arrow Canyon was deposited in clear, shallow, warm marine water, of normal salinity, and with full access to the open sea.
• Interbedded cliff-forming limestone, some of which is cherty, and bench forming, silty limestone. 11 m Fgr., dk. gray. weathering lt. gry. Beds 30 cm-1 m.

Size class: macrofossils

Collected by E.C. Wilson, William Fletcher in 27, 1972; reposited in the LACM

Primary reference: E. C. Wilson and R. L. Langenheim, Jr. 1993. Early Permian corals from Arrow Canyon, Clark County, Nevada. Journal of Paleontology 67(6):935-945 [T. Olszewski/L. Fall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61731: authorized by Tom Olszewski, entered by Leigh Fall on 26.06.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
 Auloporida - Multithecoporidae
Neomultithecopora mccutcheonae
Neomultithecopora mccutcheonae Wilson and Langenheim 1962 tabulate coral
 Auloporida - Gorskyitidae
Cornwallatia tabularia
Cornwallatia tabularia Hoare 1964 tabulate coral
 Stauriida - Cyathopsidae
? Caninia sp.
? Caninia sp. Michelin 1840 horn coral
 Stauriida - Kleopatrinidae
"Stylastraea rowetti n. sp." = Protowentzelella variabilis, Kleopatrina (Kleopatrina) ftatateeta, Paraheritschioides stevensi
"Stylastraea rowetti n. sp." = Protowentzelella variabilis Fedorowski 1965 horn coral
Kleopatrina (Kleopatrina) ftatateeta McCutcheon and Wilson 1961 horn coral
Paraheritschioides stevensi Wilson 1982 horn coral
 Stauriida - Waagenophyllidae
Heritschiella girtyi
Heritschiella girtyi Moore and Jeffords 1941 horn coral