Where: Itasca County, Minnesota (47.4° N, 93.1° W: paleocoordinates 44.3° N, 52.8° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Colerain Formation, Late/Upper Cenomanian (99.6 - 93.5 Ma)
• STRATIGRAPHIC RELATIONS: From the Colerain Fm, for which lithostratigraphic relations are unclear. AGE: Late Cenomanian, on the basis of inoceramid biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within formation.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, fine-grained, ferruginous, brown sandstone
Size class: macrofossils
Preservation: mold/impression
Reposited in the USNM
Collection methods: surface (in situ),
• COLLECTOR: Not stated in text. 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 88006: authorized by Austin Hendy, entered by Austin Hendy on 30.03.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Inoceramus mesabiensis Bergquist 1944 clam |