One mile north of the mouth of Ikes Canyon, Toquima Range (Ordovician of the United States)

Where: Nye County, Nevada (39.1° N, 116.7° W: paleocoordinates 5.7° S, 80.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Zone N brachiopod zone, Antelope Valley Formation (Pogonip Group), Whiterockian (471.8 - 457.5 Ma)

• " [...] sponge beds, zone N, of the Pogonip limestone" (Flower, 1964 p. 112); there is only one sponge-bearing lithostratigraphic unit including trilobite zone N in the Pogonip of the northern Toquima Range: the Antelope Valley limestone (see Kay & Crawford, 1964, GSA Bull. 75(5))

•Called Rhysostrophia zone at one point (Cooper 1956); PJW3 2017-06-28.

• bed-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Preservation: cast

Reposited in the USNM

• RHF = collection of Rousseau H. Flower, transferred to the Smithsonian Institution/U.S. National Museum (see Wolberg, 1990, J. Paleont. 64(3, 5, 6))

Primary reference: G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186635: authorized by Pete Wagner, entered by Pete Wagner on 28.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Strophomenida - Hesperomenidae
Hesperomena leptellinoidea n. sp. Cooper 1956