Where: St. Clair County, Michigan (43.1° N, 82.6° W: paleocoordinates 43.0° N, 82.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Rancholabrean (0.3 - 0.0 Ma)

• immediately underlies the sand layer that is dated as "Middle Wisconsinan or greater" based on fauna, plus radiocarbon, thermoluminescene, and amino acid racemization dates

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; gray claystone

Size class: microfossils

Collection methods: bulk, sieve,

Primary reference: P. F. Karrow, K. L. Seymour, B. B. Miller and J.E. Mirecki. 1997. Pre-Late Wisconsinan Pleistocene biota from southeastern Michigan, U.S.A. Palaeogeography, Palaeoclimatology, Palaeoecology 133(1-2):81-101 [J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 70131: authorized by John Alroy, entered by John Alroy on 18.03.2007

Creative Commons license: CC BY (attribution)