scholarly journals A re-examination of a human femur found at the Blind River Site, East London, South Africa: Its age, morphology, and breakage pattern

2008 ◽  
Vol 71 (1) ◽  
pp. 43-61 ◽  
Author(s):  
Qian Wang ◽  
Phillip Tobias ◽  
David Roberts ◽  
Zenobia Jacobs

A re-examination of a human femur found at the Blind River Site, East London, South Africa: Its age, morphology, and breakage patternModern human femoral features might have appeared in the early Middle Stone Age (156 ka to 20 ka) in South Africa, as demonstrated by the recent re-examination of a human femur fossil found at the Blind River Site, East London in the 1930s, if new dating results hold. Two optically stimulated luminescence dates from the relocated original Blind River shallow marine/estuarine deposits that contained the femur gave almost identical ages of ~120 ka, corresponding to the early part of the Last Interglacial (Oxygen Isotope Stage 5). Overall, the slender headless femur is of modern human form. The distal epiphysis bears some typical squatting features, including a newly recognized squatting facet on the anterior wall of the intercondylar fossa. With the typical V-shaped and oblique fracture pattern left by the missing head, the Blind River femur was most likely modified through human activity. But this style is not a cultural trait found in recent South African people. Further study is needed to place this specimen in its due context in the course of human evolution.

2011 ◽  
Vol 2011 ◽  
pp. 1-17 ◽  
Author(s):  
Amanuel Beyin

Although there is a general consensus on African origin of early modern humans, there is disagreement about how and when they dispersed to Eurasia. This paper reviews genetic and Middle Stone Age/Middle Paleolithic archaeological literature from northeast Africa, Arabia, and the Levant to assess the timing and geographic backgrounds of Upper Pleistocene human colonization of Eurasia. At the center of the discussion lies the question of whether eastern Africa alone was the source of Upper Pleistocene human dispersals into Eurasia or were there other loci of human expansions outside of Africa? The reviewed literature hints at two modes of early modern human colonization of Eurasia in the Upper Pleistocene: (i) from multiple Homo sapiens source populations that had entered Arabia, South Asia, and the Levant prior to and soon after the onset of the Last Interglacial (MIS-5), (ii) from a rapid dispersal out of East Africa via the Southern Route (across the Red Sea basin), dating to ~74–60 kya.


2013 ◽  
Vol 4 (1) ◽  
Author(s):  
Martin Ziegler ◽  
Margit H. Simon ◽  
Ian R. Hall ◽  
Stephen Barker ◽  
Chris Stringer ◽  
...  

Abstract The development of modernity in early human populations has been linked to pulsed phases of technological and behavioural innovation within the Middle Stone Age of South Africa. However, the trigger for these intermittent pulses of technological innovation is an enigma. Here we show that, contrary to some previous studies, the occurrence of innovation was tightly linked to abrupt climate change. Major innovational pulses occurred at times when South African climate changed rapidly towards more humid conditions, while northern sub-Saharan Africa experienced widespread droughts, as the Northern Hemisphere entered phases of extreme cooling. These millennial-scale teleconnections resulted from the bipolar seesaw behaviour of the Atlantic Ocean related to changes in the ocean circulation. These conditions led to humid pulses in South Africa and potentially to the creation of favourable environmental conditions. This strongly implies that innovational pulses of early modern human behaviour were climatically influenced and linked to the adoption of refugia.


2001 ◽  
Vol 41 (6) ◽  
pp. 631-678 ◽  
Author(s):  
Christopher S. Henshilwood ◽  
Francesco D'errico ◽  
Curtis W. Marean ◽  
Richard G. Milo ◽  
Royden Yates

Author(s):  
Sarah Wurz

The Early Middle Stone Age (EMSA) from South Africa occurred, broadly, between 300,000 and 130,000 years ago. This is a crucial phase in the history of Homo sapiens, as genetic and fossil evidence increasingly indicate that the roots of Homo sapiens reach back to this time. The fossil evidence from South Africa from this period is sparse, but the c. 260,000-year-old Homo helmei partial skull from Florisbad is especially significant in understanding modern human origins. A detailed chronological and regional framework for the EMSA is still in progress, but on the available evidence, the earliest EMSA occupations seem to be centered in the interior and northern regions. Transitional entities such as the Fauresmith and Sangoan and the first EMSA without large cutting tools, from Florisbad, are found in these areas. In the EMSA, biface technology as well as bipolar, discoidal, blade, and Levallois technologies were used to manufacture a wide variety of blanks, some of which were retouched into an array of tool types. Before lithic types such as hand-axes and bifacial points can be used as diagnostic criteria to define, for example, the Fauresmith and Pietersburg, further extended technological analyses are needed to determine their production sequences and context. Prepared core or Levallois technology occur frequently, but not always, in the EMSA. Prepared core technology entails careful planning to shape stone nodules geometrically prior to knapping the preformed blanks. EMSA hunters used Levallois and other pointed flakes as armatures in hafted thrusting spears. Levallois and composite tool technology reflect complex problem solving and hierarchical organizational cognitive capabilities. These competencies are also evident in early pigment processing. The clear footprint of the EMSA on the South African landscape indicates that several human groups populated this region during the Middle Pleistocene. It is highly likely that such groups were linked across Africa and that they collectively developed into Homo sapiens.


2021 ◽  
Vol 118 (16) ◽  
pp. e2020042118
Author(s):  
Elizabeth M. Niespolo ◽  
Warren D. Sharp ◽  
Graham Avery ◽  
Todd E. Dawson

Modern human behavioral innovations from the Middle Stone Age (MSA) include the earliest indicators of full coastal adaptation evidenced by shell middens, yet many MSA middens remain poorly dated. We apply 230Th/U burial dating to ostrich eggshells (OES) from Ysterfontein 1 (YFT1, Western Cape, South Africa), a stratified MSA shell midden. 230Th/U burial ages of YFT1 OES are relatively precise (median ± 2.7%), consistent with other age constraints, and preserve stratigraphic principles. Bayesian age–depth modeling indicates YFT1 was deposited between 119.9 to 113.1 thousand years ago (ka) (95% CI of model ages), and the entire 3.8 m thick midden may have accumulated within ∼2,300 y. Stable carbon, nitrogen, and oxygen isotopes of OES indicate that during occupation the local environment was dominated by C3 vegetation and was initially significantly wetter than at present but became drier and cooler with time. Integrating archaeological evidence with OES 230Th/U ages and stable isotopes shows the following: 1) YFT1 is the oldest shell midden known, providing minimum constraints on full coastal adaptation by ∼120 ka; 2) despite rapid sea-level drop and other climatic changes during occupation, relative shellfish proportions and sizes remain similar, suggesting adaptive foraging along a changing coastline; 3) the YFT1 lithic technocomplex is similar to other west coast assemblages but distinct from potentially synchronous industries along the southern African coast, suggesting human populations were fragmented between seasonal rainfall zones; and 4) accumulation rates (up to 1.8 m/ka) are much higher than previously observed for dated, stratified MSA middens, implying more intense site occupation akin to Later Stone Age middens.


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