Nephrolenellus multinodus occurrence zonule (subunit 1), CA - Fowler 1999 (Cambrian of the United States)

Where: Inyo County, California (35.8° N, 116.2° W: paleocoordinates 1.7° S, 96.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Nephrolenellus multinodus occurrence zonule (subunit 1) zone, Pyramid Shale Member (Carrara Formation), Dyeran (515.3 - 511.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified shale

Collection methods: Specimens from this site are split into an informal zonation. The zonation utilizes both acme and occurrence zonules, and subdivides some zonules into numbered subunits based on clearly distinguishable assemblages. However, relative species abundances, although reflected to some extent in the biostratigraphic zonation, are not listed. Only trilobites are included in the faunal list. The zonule name will be listed in the Zone datafield.

Primary reference: E. D. Fowler. 1999. Biostratigraphy of upper Dyeran strata of the Carrara Formation, Emigrant Pass, Nopah Range, California. Laurentia 99: V field conference of the Cambrian Stage Subdivision Working Group, International Subcomission on Cambrian Stratigraphy 46-50 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 10631: authorized by Mark Patzkowsky, entered by Phil Borkow on 29.05.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Ptychopariida -
Ptychoparioidea indet. Matthew 1887 trilobite
multiple species
 Redlichiida - Olenellidae
"Olenellus fremonti" = Mesonacis fremonti Walcott 1910 trilobite
Olenellus (Mesonacis) fremonti
Olenellus sp.3 n. sp. Hall 1861 trilobite
Olenellus (Mesonacis) n.sp.3
Olenellus gilberti White 1874 trilobite
Olenellus (Olenellus) gilberti
Olenellus terminatus Palmer 1998 trilobite
Olenellus (Paedeumias) terminatus
 Redlichiida - Biceratopsidae
Nephrolenellus multinodus Palmer and Halley 1979 trilobite