New data on the formation of local variations in the Upper Paleolithic of the Caucasus

As of today, very few Upper Paleolithic sites are known on both the southern and the northern slopes of the Caucasus. Their materials allow tracing settlement dynamics in the region from 40/39 to 20 cal ka BP. The change of the research methodology, which today is focused on thorough excavations involving a range of natural science disciplines for complex investigation of the materials, including complete water sieving of the cultural deposits, enables obtaining many new, often unique data on human occupation, life-support strategies, and adaptations of humans in different periods of the Upper Paleolithic in the Caucasus. In our paper, a wide range of issues is discussed, concerned with the cultural affinity, diversity, and interaction of the Upper Paleolithic population of the Caucasus. The earliest Upper Paleolithic industries (40–35 cal ka BP) of the southern as well as the northern slopes of the Caucasus show the closest affinity. Studies of the raw-material strategies indicate the presence of contacts between populations of the northwestern and South Caucasus throughout the entire Upper Paleolithic and the development of extensive social networks. During the Late Upper Paleolithic period, the materials of the North and South Caucasus acquire certain features of distinctiveness, as in the stone industry and in bone tools and decorations. The appearance of geometric microliths in the South Caucasus contemporaneously with the Near East attests to the contacts between these regions. The delivery of seashells from the Caspian Sea coast to the Lesser Caucasus also indicates the southeastern direction of the contacts. The import of seashells from the Black Sea coast to the northwestern Caucasus indicates the southwestern direction of contacts. The unique finds that have analogies in the Upper Paleolithic of the Russian Plain indicate contacts between populations of the northwestern Caucasus and the Russian Plain that belong to different cultural areas. The current data demonstrate formation of local differences in the culture of the Upper Paleolithic populations in both the South and the North Caucasus, including under the influence of the neighboring regions

Neonatal postcrania from Mezmaiskaya, Russia, and Le Moustier, France, and the development of Neandertal body form

Human Origin

Suggested guidelines for invasive sampling of hominid remains

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Kesem-Kebena-Dulecha Study Area, Ethiopia

In 1988 and 1989, the Paleoanthropological Inventory of Ethiopia (PIE) field expedition discovered numerous localities of prehistoric significance across Ethiopia (WoldeGabriel et al., 1992). One of the regions surveyed by the Inventory team was the Dulecha administrative district (Gabi Rasu), Afar Zone (Fig. 1). The surveyed area (geographic reference: 9.407° N, 40.057° E) includes the watershed vicinity of the Kesem and Kebena Rivers (tributaries of the Awash River) where Plio-Pleistocene outcrops flank the Awash floodplain parallel to the river and west of the Dofan Volcano. The Fentale Vlcano lies SSW of the Kesem-Kebena-Dulecha area, immediately south of where the Main Ethiopian Rift opens into a floodplain, and offset drainages north of the Dulecha River delimit the area on the north. The Kesem-Kebena-Dulecha area was unknown paleoanthropologically prior to the PIE’s fieldwork, which designated localities with KK (Kesem Kebena) and a unique integer for the locality. The PIE named localities from KK 1 to KK 7, ranging in age from Pliocene (KK 1 and KK 2) through later Pleistocene. Localities are identified by the white, numbered circles on Fig. 1. We continue to follow the nomenclature established by the PIE for consistency’s sake. The most significant discovery of the PIE was the Acheulean lithic and faunal assemblages at the KK 6 locality (Table 1). The PIE took several geological samples, and those from the KK 6 area date to c. 1.0 million years ago (Ma), nearly identical in age to the Harreya Pumice Unit of the Daka Member of the Bouri Formation (Gilbert & Asfaw, 2008).Depto. de Geodinámica, Estratigrafía y PaleontologíaFac. de Ciencias GeológicasTRUEpu

Reconstructing the genetic history of late Neanderthals

Although it has previously been shown that Neanderthals contributed DNA to modern humans, not much is known about the genetic diversity of Neanderthals or the relationship between late Neanderthal populations at the time at which their last interactions with early modern humans occurred and before they eventually disappeared. Our ability to retrieve DNA from a larger number of Neanderthal individuals has been limited by poor preservation of endogenous DNA and contamination of Neanderthal skeletal remains by large amounts of microbial and present-day human DNA. Here we use hypochlorite treatment of as little as 9 mg of bone or tooth powder to generate between 1- and 2.7-fold genomic coverage of five Neanderthals who lived around 39,000 to 47,000 years ago (that is, late Neanderthals), thereby doubling the number of Neanderthals for which genome sequences are available. Genetic similarity among late Neanderthals is well predicted by their geographical location, and comparison to the genome of an older Neanderthal from the Caucasus indicates that a population turnover is likely to have occurred, either in the Caucasus or throughout Europe, towards the end of Neanderthal history. We find that the bulk of Neanderthal gene flow into early modern humans originated from one or more source populations that diverged from the Neanderthals that were studied here at least 70,000 years ago, but after they split from a previously sequenced Neanderthal from Siberia around 150,000 years ago. Although four of the Neanderthals studied here post-date the putative arrival of early modern humans into Europe, we do not detect any recent gene flow from early modern humans in their ancestry

A draft sequence and preliminary analysis of the Neandertal genome

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