Late Quaternary History of the Lake Michigan Basin

Environmental analysis of a Twocreekan-aged beetle (Coleoptera) assemblage from Kewaunee, Wisconsin
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Published:January 01, 1990
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Clarke E. Garry, Robert W. Baker, Donald P. Schwert, Allan F. Schneider, 1990. "Environmental analysis of a Twocreekan-aged beetle (Coleoptera) assemblage from Kewaunee, Wisconsin", Late Quaternary History of the Lake Michigan Basin, Allan F. Schneider, Gordon S. Fraser
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A Twocreekan organic horizon, which is underlain by till of the Haven Member and overlain by till of the Two Rivers Member of the Kewaunee Formation, was investigated near Kewaunee, Wisconsin. Wood from this horizon was dated at 11,700 ± 110 B.P. (ISGS-1061) and 11,650 ± 170 B.P. (ISGS-1234). The insect fauna from the Kewaunee site has many elements in common with the insects from the type section of the Two Creeks Forest Bed, 14 km to the south. These include the northwestern carabid Asaphidion yukonense, northern carabids Carabus taedatus and Bembidion grapii, and the northern staphylinid Acidota...
- allochthons
- aquatic environment
- Arthropoda
- assemblages
- biostratigraphy
- Cenozoic
- clastic sediments
- Coleoptera
- Endopterygota
- environmental analysis
- Great Lakes region
- Insecta
- Invertebrata
- Kewaunee County Wisconsin
- lacustrine environment
- Mandibulata
- Manitowoc County Wisconsin
- Neoptera
- North America
- organic compounds
- organic materials
- paleoecology
- Pleistocene
- Pterygota
- Quaternary
- sediments
- shallow-water environment
- stratigraphy
- till
- type localities
- United States
- Wisconsin
- Kewaunee Formation
- Kewaunee Wisconsin
- Pterostichus
- Cymindis unicolor
- Asaphidion yukonense
- Two Rivers Member
- Two Creeks Interstade
- Acidota quadrata
- Haven Member
- Carabus taedatus
- Bembidion grapii