Where: Lyon County, Minnesota (44.3° N, 95.8° W: paleocoordinates 44.0° N, 58.9° 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 unnamed lithostratigraphic unit, possibly glacial drift; stratigraphic provenance is not discussed, but possibly derived from Carlisle Shale. AGE: Late Turonian, on the basis of ammonoid biostratigraphy; Prionocyclus novimexicanus zone. STRATIGRAPHIC POSITION: From unknown position in local section.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, concretionary, calcareous shale
Size class: macrofossils
Preservation: concretion
Collected by Holt
Collection methods: surface (in situ),
• COLLECTOR: T. Holt. REPOSITORY: Not stated in text.
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 88031: authorized by Austin Hendy, entered by Austin Hendy on 30.03.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Prionocyclus novimexicanus Marcou 1858 ammonite |