USGS Loc. 13739, Twin City Brick Co. pit (Cretaceous of the United States)

Where: Dakota County, Minnesota (44.9° N, 93.1° W: paleocoordinates 44.0° N, 56.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Prionocyclus novimexicanus ammonoid zone, Late/Upper Turonian (93.5 - 89.3 Ma)

• STRATIGRAPHIC RELATIONS: From an unnamed lithostratigraphic unit, for which stratigraphic relations are not discussed. AGE: Late Turonian, on the basis of ammonoid biostratigraphy; Prionocyclus novimexicanus zone. STRATIGRAPHIC POSITION: From unknown position within local section.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

• SPECIFIC LITHOLOGY: Not stated, but probably concretionary shale. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: mold/impression

Reposited in the USNM

Collection methods: surface (in situ),

• COLLECTOR: Unknown. REPOSITORY: USNM.

Primary reference: W. A. Cobban. 1983. Molluscan fossil record from the northeastern part of the Upper Cretaceous seaway, Western Interior. United States Geological Survey Professional Paper 1253:1-25 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88030: authorized by Austin Hendy, entered by Austin Hendy on 30.03.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to ammonoids or bivalves described in text. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications.
Show authors, comments, and common names
Cephalopoda
 Ammonitida - Collignoniceratidae
Prionocyclus novimexicanus
Prionocyclus novimexicanus Marcou 1858 ammonite