Table 1 Radiocarbon dates from Clovis sites.

Site	Date	Calibrated date	Laboratory number	Material dated	Remarks
Site	¹⁴C yr B.P.	cal yr B.P.*	Laboratory number	Material dated	Remarks
Lange-Ferguson, SD	11,110 ± 40	13,095–12,990	UCIAMS-11345	Mammoth bone (XAD)
Dent, CO	11,065 ± 35	13,075–12,930	UCIAMS-11339	Mammoth bone (XAD)
	10,940 ± 30	12,885–12,770	UCIAMS-11340	Mammoth bone (XAD)
	10,960 ± 35	12,905–12,780	UCIAMS-116403	Mammoth bone (XAD)
	11,055 ± 50	13,070–12,925	OxA-X-2736-11	Mammoth bone (hydroxyproline)
	11,155 ± 50	13,160–13,005	OxA-X-2736-12	Mammoth bone (hydroxyproline)
Average	11,010 ± 15	12,970–12,845
Domebo, OK	10,960 ± 30	12,905–12,820	UCIAMS-11341	Mammoth bone (XAD)
Shawnee-Minisink, PA	10,940 ± 90	12,960–12,755	Beta-101935	Carbonized Hawthorn seed (Crataegus)	Hearth
	10,900 ± 40	12,830–12,760	Beta-127162	Carbonized Hawthorn seed (Crataegus)	Hearth
	10,820 ± 50	12,815–12,730	Beta-203865	Carbonized Hawthorn seed (Crataegus)	Hearth
	10,915 ± 25	12,830–12,770	UCIAMS-24865	Carbonized Hawthorn seed (Crataegus)	Hearth
	11,020 ± 30	13,050–12,850	UCIAMS-24866	Carbonized Hawthorn seed (Crataegus)	Hearth
	10,970 ± 50	12,925–12,770	OxA-1731	Carbonized Hawthorn seed (Crataegus)	Hearth
Average	10,940 ± 15	12,885–12,770
Sheriden Cave, OH	10,915 ± 30	12,830–12,770	UCIAMS-38249	Bone (XAD)	Bone point
La Prele, WY	11,035 ± 50	13,065–12,900	OxA-X-2736-14	Mammoth bone (hydroxyproline)
	10,965 ± 30	12,910–12,825	UCIAMS-206764	Mammoth bone (XAD)
Average	10,985 ± 25	12,915–12,835
Colby, WY	10,790 ± 30	12,750–12,735	UCIAMS-11342	Mammoth bone (XAD)	Bone pile 2
	10,950 ± 30	12,895–12,775	UCIAMS-11343	Mammoth bone (XAD)	Bone pile 2
Average	10,870 ± 20	12,820–12,800
Jake Bluff, OK	10,750 ± 40	12,745–12,720	CAMS-79940	Bison tooth (XAD)
	10,840 ± 45	12,820–12,735	CAMS-90968	Bison bone (XAD)
	10,700 ± 45	12,735–12,690	CAMS-90969	Bison bone (XAD)
	10,810 ± 25	12,755–12,740	UCIAMS-61657	Bison bone (XAD)
	10,885 ± 35	12,820–12,760	UCIAMS-59874	Bison bone (XAD)
Average	10,820 ± 10	12,755–12,745
Anzick, MT	10,915 ± 50	12,880–12,760	OxA-X-2739-54	Human bone (hydroxyproline)	Anzick-1 cranium
	11,025 ± 30	13,055–12,895	UCIAMS-61661	Elk (XAD)	Foreshaft
	10,900 ± 50	12,835–12,755	OxA-X-2739-55	Elk (hydroxyproline)	Foreshaft
	11,050 ± 55	13,070–12,920	OxA-X-2739-56	Elk (hydroxyproline)	Foreshaft
Average	10,985 ± 20	12,905–12,840
Cactus Hill, VA	10,860 ± 60	12,825–12,745	Beta-266341	Charcoal	Hearth
	10,840 ± 40	12,820–12,740	Beta-206060	Charcoal	Hearth
	10,810 ± 40	12,760–12,730	Beta-233642	Charcoal	Hearth
	10,890 ± 40	12,825–12,760	Beta-233643	Charcoal	Hearth
	10,910 ± 40	12,835–12,760	Beta-210651	Charcoal	Hearth
Average	10,860 ± 20	12,820–12,745

*Ages calibrated using IntCal20, Calib 8.1 (9).