Table 1. A Timescale for Eastern Paleoindian Assemblages

[Long description]

Calendar BP Radiocarbon rcbp Occupations Northeastern Developments Midwestern Developments Southeastern Developments Climatic Event 8986, 8874, 8825, 8819 8,000 ARCHAIC OCCUPATIONS Bifurcate Horizon Bifurcate Horizon Bifurcate Horizon 10,189 9,000 Lanceolate types / Corner Notched Horizon Corner Notched Horizon Early Archaic Boreal 10,736, 10,708 10,702 9,500 Terminal Paleoindian / Early Archaic Early Archaic / Late Paleoindian Corner Notched Horizon 11,254, 11,253, 11,234 9,900 Early Side Notched Horizon Early Side Notched Horizon 11,545, 11,512, 11,400, 11391, 11,340 10,000 TERMINAL PALEOINDIAN OCCUPATIONS Holcombe type Dalton Horizon Holcombe type Early Side Notched Horizon Younger Dryas ends / Preboreal 11,687, 11,677, 11,642 10,100 Crowfield Type Crowfield type Late Paleoindian 11,930, 11,804, 11,768 10,200 Late Paleoindian Dalton Horizon Dalton Horizon 10, 500 Parkhill type Middle Paleoindian Quad / Beaver Lake Horizon 12,899 10,800 WIDESPREAD SETTLEMENT Folsom/Barnes types Cumberland / Folsom types 12,944 10,900 Clovis / Gainey Types Younger Dryas begins 12,999 11,000 Early Paleoindian Clovis / Gainey types Middle Paleoindian Inter-Allerid Cold Period ends 13,132 11,100 13,155 11,200 Clovis Widespread 13,411 11,400 Inter-Allerid Cold Period begins 13,455 11,500 INITIAL HUMAN OCCUPATIONS Clovis beginnings?? Allerid 13,811 11,750 14,043, 13,923, 13,858 11,950 Early Paleoindian Older Dryas ends 14,065 12,000 Chesrow Complex Little Salt Spring / Page-Ladson sites 14,100 12,100 Older Dryas begins 15,084, 14,731, 14,382 12,500 Early Paleoindian 15,231, 14,606, 14,449 12,600 Big Eddy site Billing begins 19,091 16,000 Meadowcroft site Cactus Hill site 21,392 18,000 Initial Colonization(?) Glacial maximum

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