Frenchman Mountain (Cambrian of the United States)

Where: Clark County, Nevada (36.2° N, 115.0° W: paleocoordinates 2.8° S, 96.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Olenellus zone, Pioche Formation, Dyeran (515.3 - 511.2 Ma)

• Was Atdabanian-Lenian

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone and shale

• 80% green micaceous shale and 20% brown fine-grained sandstone

Size class: mesofossils

Primary reference: P. D. Pack and H. B. Gayle. 1971. A new Olenellid trilobite, Biceratops nevadensis, from the Lower Cambrian near Las Vegas, Nevada. Journal of Paleontology 45(5):893-898 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 8665: authorized by Mark Patzkowsky, entered by Phil Borkow on 17.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Redlichiida - Olenellidae
? Olenellus sp., "Paedeumias sp." = Olenellus (Paedeumias), Biceratops nevadensis n. gen. n. sp., "Fremontia sp." = Mesonacis
? Olenellus sp. Hall 1861 trilobite
"Paedeumias sp." = Olenellus (Paedeumias) Walcott 1910 trilobite
Biceratops nevadensis n. gen. n. sp. Pack and Gayle 1971 trilobite
"Fremontia sp." = Mesonacis Walcott 1885 trilobite
Rhynchonellata
 Orthida - Bohemiellidae
? Wimanella sp.
? Wimanella sp. Walcott 1908
Paterinata
 Paterinida - Paterinidae
Dictyonina pannula
Dictyonina pannula White 1874
misspelled as "Dictytonina pannula"
Hyolitha
 Hyolithida - Hyolithidae
Hyolithes sp.
Hyolithes sp. d'Eichwald 1840
unclassified
  -
Annelida indet.
Annelida indet. Lamarck 1809