Cobb's Creek site (Cretaceous of the United States)

Where: Brown County, Minnesota (44.3° N, 94.4° W: paleocoordinates 41.6° N, 55.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Ostrander Member (Windrow Formation), Cenomanian (100.5 - 93.9 Ma)

• Unit 3 of Parham (1970)

Environment/lithology: deltaic; lithified claystone

• The Cobb's Creek Site has exposed Cretaceous deposits of semivarved sandstone and silty clay that were from 11.9 m to 17.8 m thick. The sandstone units consist of clean quartz that show torrential deltaic cross-bedding and are from 15.2 cm to 45.7 cm thick, separated by thin laminae of grey clay, which were deposited in calm deltaic water. Some of the clay layers contained organic material from which samples for this investigation were colllected

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Collection methods: Specimens kept in the Paleobiology Museum, Department of Biological Sciences, St. Cloud State University, St. Cloud, Minnesota, 56301.

Primary reference: L. L. Manske and S. E. Lewis. 1990. Two Fossil Adult Cockroaches (Blattaria) from the Cretaceous of Minnesota. Journal of Paleontology 64(1):159-161 [M. Clapham/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 140292: authorized by Matthew Clapham, entered by Jered Karr on 07.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Dicondylia -
"Blattaria "indet. 1"" = Blattodea, "Blattaria "indet. 2"" = Blattodea
"Blattaria "indet. 1"" = Blattodea Brunner von Wattenwyl 1882 cockroach
N.U. 17
"Blattaria "indet. 2"" = Blattodea Brunner von Wattenwyl 1882 cockroach
N.U. 18