Ninemile Shale, Whiterock Canyon, Table D.51 (Ordovician of the United States)

Where: Nevada (39.2° N, 116.4° W: paleocoordinates 5.4° S, 82.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Ninemile Shale Formation, Arenig (478.6 - 466.0 Ma)

• approx. 8 m below whiterockian/ibexian boundary

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, green mudstone and lithified, lenticular, gray lime mudstone

Size class: macrofossils

Preservation: mold/impression, original calcite

Collection methods: quarrying, mechanical,

Primary reference: S. E. Peters. 2003. Evenness, richness and the Cambrian-Paleozoic faunal transition in North America: an assemblage-level perspective. The University of Chicago 1-279 [S. Peters/S. Peters/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 64601: authorized by Shanan Peters, entered by Shanan Peters on 10.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

 Agnostida -
Agnostida indet. Salter 1864 trilobite
 Asaphida - Asaphidae
? Protopresbynileus sp. Hintze 1954 trilobite
Lachnostoma sp. Ross 1951 trilobite
 Asaphida - Raphiophoridae
Ampyx sp. Dalman 1827 trilobite
 Leperditicopida -
? Leperditicopida indet. Scott 1961 ostracod
 Billingsellida - Polytoechiidae
? Tritoechia sp. Ulrich and Cooper 1936
 Pentamerida - Clarkellidae
 Lingulida - Obolidae
? Lingulella sp. Salter 1866
 Siphonotretida - Siphonotretidae
? Schizambon sp. Walcott 1884
 Bellerophontida - Tropidodiscidae
? Peelerophon sp. Yochelson 1982 snail
Rhombifera sp. Zittel 1879