- Two Creekan forest bed in central Michigan
Samples collected in 1999 from a location about 1 km north of Moline, Allegan Co., MI, by Dr. Alan Kehew. They were taken from a pile of soil saved from an excavation about 8 m deep. The pile of sediment consisted of mainly gray silt containing many wood fragments and some intact spruce cones. Earlier radiocarbon dating gave ages of 12,540 ± 60 and 12,620 ±70 years.