Esr dating and dosimetry senior dating iowa
New data from stratified Fauresmith bearing sites in southern Africa suggest this transitional industry maybe as old as 511–435 ka and should represent the beginning of the MSA as a broad entity rather than the terminal phase of the Acheulian.
The MSA in this form is a technology associated with archaic H.
sapiens populations occurred at ~370 ka and that divergence from a last common ancestor occurred at ~706 ka. heidelbergensis fossils such as those from Sima de los Huesos at 530 ka  may represent fossils occurring soon after this initial split from a common ancestor.
sapiens and early modern humans in Africa with a trend of greater complexity through time.
In the most recent reorganisation of the Pleistocene period (2.58 Ma–0.01 Ma ), the Ionian is defined as a geological stage between the Bruhnes-Matuyama boundary at 781 ka (end of the Calabrian stage 1.81–0.78 Ma) and the beginning of Marine Isotope Stage 5 interglacial period at 126 ka (beginning of the Upper Pleistocene 126–11.7 ka).
Many researchers have also suggested the occurrence of a transitional industry, the Fauresmith, covering the transition from the Early to Middle Stone Age, but again, the Fauresmith has been poorly defined, documented, and dated.Despite the occurrence of large cutting tools in these Fauresmith assemblages, they appear to include all the technological components characteristic of the MSA.