Section C-1. Cooks Range: west-facing escarpment in northern part (Ordovician of the United States)

Where: Luna County, New Mexico (32.6° N, 107.7° W: paleocoordinates 15.9° S, 78.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Oulodus robustus conodont zone, Aleman Formation (Montoya Group), Maysvillian (450.2 - 449.6 Ma)

• Stratigraphy first described in Howe 1965.

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

• Calcilutite

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Primary reference: H. J. Howe. 1965. Dalmanellidae from the Montoya Group (Ordovician) of Trans-Pecos Texas. Journal of Paleontology 39(2):235-247 [S. Holland/S. Holland/S. Holland]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 165302: authorized by Pete Wagner, entered by Pete Wagner on 17.01.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

• Cobbled from 4 taxonomic papers.
Show authors, comments, and common names
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
Hypsiptycha neenah, Lepidocyclus laddi, "? Lepidocyclus capax" = Hiscobeccus capax
Hypsiptycha neenah Whitfield 1882
Lepidocyclus laddi Wang 1949
"? Lepidocyclus capax" = Hiscobeccus capax Conrad 1842