Preble Fm., Unit R (Cambrian of the United States)

Where: Nevada (38.9° N, 117.9° W: paleocoordinates 1.7° S, 88.6° W)

• coordinate based on political unit

When: Unit R Member (Preble Formation), Merioneth (501.0 - 485.4 Ma)

Environment/lithology: offshore shelf; conglomerate

• "gravity-flow ls. congl. outer shelf, BA5"

Size class: macrofossils

Primary reference: M. J. Rees and A. J. Rowell. 1980. Preble Fm., a Cambrian outer continental shelf deposit, Nevada. Brigham Young University Geology Studies 27:1-8 [M. Uhen/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 208: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Rees and Rowell, 1980"
 Corynexochida - Dorypygidae
Kootenia sp. Walcott 1899 trilobite
 Acrotretida -
Acrothyra sp. Mathew 1901
 Acrotretida - Acrotretidae
Linnarssonia sp. Walcott 1885
[spelling unsure! Otherwise Inarticulata; Acrotretida] - originally entered as "Limnarssonia sp."
Prototreta sp. Bell 1941
[spelling unsure! might have put an 'i' (Prototireta or Prototrieta) Otherwise Inarticulata; Acrotretida]
 Paterinida - Paterinidae
Micromitra sp. Meek 1873