Cataract Canyon [Spence Shale Mbr, Langtson Fm] (Cambrian of the United States)

Where: Box Elder County, Utah (41.6° N, 112.0° W: paleocoordinates 5.5° S, 89.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Spence Shale Member (Langston Formation), Middle Cambrian (513.0 - 501.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Spence Shale of the Langston Fm. Stratigraphic relations are not discussed in text. AGE: Middle Cambrian. Justification not stated in text. STRATIGRAPHIC POSITION: Unknown position within member.

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified mudstone

• ENVIRONMENT: Alternating periods of low and moderate energy depositional environment on carbonate ramp.
• SPECIFIC LITHOLOGY: Found in the lower fine-grained parts of multiple meter-scale mudstone to nodular wackestone-packstone packages. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: cast, mold/impression, soft parts

Reposited in the ROM, USNM, YPM

Collection methods: surface (in situ),

• COLLECTORS: Unknown, but possibly including B.S. Liverman, D.E. Briggs, S.L. Halgedahl, and R.J Jarrard. REPOSITORIES: KUMIP (Kansas), ROM (Ontario), USNM (Washington), UU (Utah), YPM (Yale).

Primary reference: D. E. G. Briggs, B. S. Lieberman, J. R. Hendricks, S. L. Halgedahl, and R. D. Jarrard. 2008. Middle Cambrian arthropods from Utah. Journal of Paleontology 82(2):238-254 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80121: authorized by Austin Hendy, entered by Austin Hendy on 05.04.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Only includes those taxa systematically discussed in publication. NOMENCLATURE: Authoritative publication with modern nomenclature and use of species-resolution assignments.
unclassified
  -
Crustacea
 Waptiida - Waptiidae
Waptia cf. fieldensis Walcott 1912