Alacran Mountain, saddle at N end, Hueco Mountains (Permian of the United States)

Where: Texas (31.9° N, 106.0° W: paleocoordinates 1.8° N, 35.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Alacran Mountain Formation, Artinskian (290.1 - 279.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: A. K. Miller and W. Youngquist. 1949. American Permian nautiloids. Geological Society of America Memoir 41:1-218 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 81400: authorized by Matthew Clapham, entered by Matthew Clapham on 21.06.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Nautilida - Grypoceratidae
Stenopoceras sp. Hyatt 1893 nautiloid