Duck Creek [Raiff Limestone] (Cambrian of the United States)

Where: Nevada (39.4° N, 114.8° W: paleocoordinates 4.1° S, 88.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Raiff Limestone Formation, Dresbachian (501.0 - 485.4 Ma)

• AGE: Dresbachian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Collection methods: Collection focuses on the identification of trilobites.

Primary reference: A. R. Palmer. 1999. Stratotype boundary of the Steptoean Stage, McGill Nevada. Laurentai 99: V field conference of the Cambrian Stage Subdivision Working Group, International Subcomission on Cambrian Stratigraphy 22-23 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 10505: authorized by Mark Patzkowsky, entered by Phil Borkow on 14.05.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ptychopariida - Crepicephalidae
Coosia sp. Walcott 1911 trilobite
Coosia longocula n. sp. Palmer 1962 trilobite
 Ptychopariida - Kingstoniidae
Komaspidella occidentalis n. sp. Palmer 1962 trilobite
 Olenida - Cedariidae
Carinamala longispina n. sp. Palmer 1962 trilobite
Cedaria brevifrons n. sp. Palmer 1962 trilobite
 Agnostida - Diplagnostidae
"Pseudagnostina contracta n. sp." = Pseudagnostina douvillei
"Pseudagnostina contracta n. sp." = Pseudagnostina douvillei Bergeron 1899
 Agnostida -
Glyptagnostus sp. Whitehouse 1936
 Agnostida - Clavagnostidae
Aspidagnostus laevis n. sp. Palmer 1962
 Agnostida - Agnostidae