Human Responses to Changing Environments in Central Africa Between 40,000 and 12,000 B.P.

Reconstructions of the Equatorial forest in Central Africa fuel the debate on whether hunter-gatherers at the end of the Pleistocene were capable of living in or off the forest prior to the advent of agriculture. Their traces are rare and often reduced to their stone equipment. In an attempt to see to what extent technology and environmental exploitation are interrelated, all Central African sites dated between 40,000 and 12,000 B.P. are analyzed for their material culture, the environmental setting at the time of the occupation, and the exploitation of that environment. Although the evidence is still circumstantial, two large technological traditions have been recognized in Central Africa at the end of the Pleistocene, the Lupemban and microlithic industries, and both are associated with a variety of environments. This, in combination with a fragmented forest and concomitant increase of ecotone during the Last Glacial Maximum, would have enhanced rather than hampered human occupation in the area. It may be argued that the inherent flexibility and capability of exploiting a variety of environments enabled the hunter-gatherer communities to face and adapt to environmental changes regardless of stone technology.     

Advances in the archaeology of the Pampa and Patagonia

Archaeological data reveal two distinctive cultural adaptations on the Pampa and Patagonia of Argentina: terrestrial hunter-gatherers in the former and most of the latter region and maritime hunter-gatherers along the southern extreme. Both adaptations were achieved by the end of the fifth millennium B.C. Thereafter, a stable equilibrium was maintained, with a slow drift toward greater emphasis on resources providing the maximum return for the least effort. The high productivity of the Fuegian environment sustained a population 30 times greater than occupied the Pampa and continental Patagonia prior to Araucanian penetration in the sixteenth century A.D. The long-term stability is attributable to the absence of environmental or demographic pressures or encroachments by neighboring groups, which might have made more intensive exploitation of the environment necessary.     

Middle pleistocene adaptations in Central Europe

The biological evolution documented in the fossil and archaeological record of Central Europe between about 700,000 and 100,000 years ago reflects the transition fromHomo erectus to the earliestHomo sapiens. These populations created different types of industries, ranging from assemblages of small artifacts and industries with simple pebble tools to standardized units such as the Evolved Acheulean and the Early Mousterian. The industries of the Last Interglacial (Taubachian) show some regression in technological standardization and a reappearance of small artifacts. Other aspects of cultural adaptation (settlements, dwellings, hunting activity, symbolic and aesthetic expressions) are also summarized. It is suggested that the impact of climate and climatic changes on human settlement and behavior was greater in Central Europe (where two glaciations advanced from both north and south) than in the Mediterranean and Western Europe. The general trend of cultural veolution was toward greater technological and social complexity, but its course was not unilinear.     

On Microlithic Quartz Industries at the End of the Pleistocene in Central Africa: The Evidence from Shum Laka (NW Cameroon)

The rock shelter of Shum Laka, situated in the Grassfields of northwestern Cameroon, was occupied during the later Pleistocene and Holocene. Plant remains reveal that there were no drastic changes in the immediate environment of the shelter between 30,000 and 10,000 bp. The industry is microlithic during this entire period. Quartz was deliberately chosen as the preferred raw material and there were no changes in technology or raw material usage over time. A comparison with similar sites in the northeastern Democratic Republic of Congo reveals that the microlithic quartz tradition was apparently appropriate for the exploitation of a wide variety of environmental settings. This flexibility may represent an adequate technological response to the environmental changes in Central Africa at the end of the Pleistocene.L'abri sous roche de Shum Laka, situé dans les Grassfields au nord-ouest du Cameroun, a été occupé depuis la fin du Pléistocène. Les restes de plantes montrent qu'il n'y a pas eu de changements importants dans l'environnement immédiat de l'abri entre 30,000 et 10,000 bp. L'industrie est microlithique pendant toute cette période. Le choix du quartz comme matière première préferentielle était délibéré par ailleurs, ni la technologie, ni l'utilisation des matières premières n'ont subi de modifications conséquentes au cours de cette période. Une comparaison avec des sites similaires du nord-est de la République Démocratique du Congo nous montre que la tradition microlithique sur quartz aurait été appropriée dans l'exploitation d'une grande variété d'écosystèmes. Cette flexibilité pourrait traduire une réponse technologique adéquate face aux changements environnementaux qui ont eu lieu en Afrique Centrale à la fin du Pléistocène.     

Forty-Two Degrees South: The Archaeology of Late Pleistocene Tasmania

Over the past 18 years the results of archaeological field research in many parts of Australia have challenged the view of late Pleistocene archaeological unity and homogeneity. Debates are increasingly focused on issues of identifying regional behavioral variability and away from a normalization of Australia's prehistory. Prior notions of cultural transformations from simple (late Pleistocene) to complex (late Holocene) social behaviors, technological homogeneity, and the timing of colonization are being increasingly scrutinized. One such area that has become a spearhead of this challenge is Tasmania, which continues to demonstrate its ability to confront preconceptions about the nature of past human behaviors.     

The northernmost South American fossil record of Boa constrictor (Boidae,Boinae) from the Plio–Pleistocene of El Breal de Orocual (Venezuela)

Onary-Alves, S.Y., Hsiou, A.S. & Rincón, A.D., July 2016. The northernmost South American fossil record of Boa constrictor (Boidae, Boinae) from the Plio–Pleistocene of El Breal de Orocual (Venezuela). Alcheringa 41, xxx–xxx. ISSN 0311-5518.

Boa constrictor is an extant boid widely distributed through the neotropical region, from the north of Central America to central Argentina. The fossil record of the species includes examples from several localities across the Americas that extend beyond the current distribution of the species. Here we report the first Plio–Pleistocene fossils of Boa from Monagas state, Venezuela. The material comes from El Breal de Orocual (Maturín municipality), which is an inactive tar seep deposit emplaced within the Mesa Formation. The specimens consist of two isolated anterior trunk vertebrae, an articulated sequence of six mid-trunk vertebrae and two posterior trunk vertebrae. The vertebrae are attributed to B. constrictor based on the following features: robust and high vertebrae; thick zygosphene with a notched or concave anterior edge; presence of a paracotylar, subcentral and lateral foramina; marked parasagittal ridges; epizygapophyseal process evident on the dorsal surface of the postzygapophyseal articular facets and high blade-like neural spine. The presence of B. constrictor in northern of Venezuela indicates a palaeoenvironment probably like savanna crossed by rivers with riparian forests, and suggests the predominance of a mesothermal climate with a moderate rainfall.

Silvio Y. Onary-Alves [silvioyuji@gmail.com], Programa de Pós-graduação em Biologia Comparada, Faculdade de Filosofia, Ciências e Letras, Universidade de São Paulo (USP), Av. Bandeirantes 3900, CEP 14040901, Ribeirão Preto, São Paulo, Brazil; Annie S. Hsiou [anniehsiou@ffclrp.usp.br], Laboratório de Paleontologia, Faculdade de Filosofia, Ciências e Letras, Departamento de Biologia, Universidade de São Paulo (USP), Av. Bandeirantes 3900, CEP 14040901, Ribeirão Preto, São Paulo, Brazil; Ascanio D. Rincón [paleosur1974@gmail.com], Laboratorio de Paleontología, Centro de Ecología, Instituto Venezolano de Investigaciones Científicas (IVIC), Carretera Panamericana Km 11, 1020-A Caracas, Venezuela.     

Palaeopathology in late Pleistocene and early Holocene Central Plains bison: dental enamel hypoplasia,fluoride toxicosis and the archaeological record

Multiple formative agents are cited for dental enamel hypoplasia (DEH) in modern and fossil mammals. Here, four late Pleistocene-early Holocene bison assemblages from the Central Great Plains are analyzed for DEH and other bone pathologies to investigate the possible influence of chronic fluoride toxicosis, a condition that may have presented a long-term source of duress for prehistoric bison and devalued them as nutritional resources to human hunters. Although DEH is present in all the analyzed assemblages, the lack of corroborating dental and post-cranial anomalies consistent with chronic fluoride toxicosis speaks against it as a primary factor of DEH formation or general ill health in these bison. Rather, maternal nutritional stress, weaning, and seasonal forage condition are invoked as probable promoters of DEH formation. Other identified abnormalities are discussed in reference to their contribution to reduced feeding efficiency and lameness, as are their roles in developing palaeoecological models applicable to archaeological questions about ancient human lifeways.     

The Pleistocene Later Stone Age south of the Limpopo River

The earliest Later Stone Age (LSA) industries from southern Africa are microlithic and unstandardized and include the bipolar technique. The dating of these industries is controversial and the earliest microlithic industry is said to occur at Border Cave at about 39,000 B.P. By 18,000 B.P. a bladelet tradition was established and this was replaced in many parts of southern Africa, at about 12,000 B.P., by a widespread and prolific nonmicrolithic industry, characterized by side-struck flakes. The late Pleistocene environment was colder than present, with particularly harsh conditions during the Last Glacial Maximum (LGM), between about 20,000 and 18,000 B.P. Populations may have been isolated because archaeological visibility is low during the LGM and decreases further after the LGM. After 13,000 B.P. there is a dramatic increase in sites and this implies that there may have been widespread colonization of territory previously unoccupied for tens of thousands of years. By the end of the late Pleistocene there was a change in hunting patterns, in parts of southern Africa, from an emphasis on the capture of large, gregarious grazers to an emphasis on small, solitary browsers. Social complexity increased during the late Pleistocene, and by 12,000 B.P. it seems possible that Stone Age people were observing some social practices recorded historically among Bushmen (San).     

The Prehistoric Exploration and Colonization of Fuego-Patagonia

The main goal of this paper is to review the earliest archaeological evidence for the presence of humans in Fuego-Patagonia. The paleoenvironmental and paleoclimatic framework is briefly introduced, followed by a discussion of its relevance to understanding the exploration and colonization of Fuego-Patagonia. Technological and faunal evidence from a number of sites from the southern extreme older than 10,000 B.P. is analyzed. This leads to the conclusion that an early entry, at least 12,000 years old, appears best to accommodate the available chronological evidence. On the other hand, data from the Northern fringes of Patagonia clearly suggest an earlier human colonization.     

湖北大悟夏家河遗址发掘简报

夏家河遗址位于湖北省大悟县高店乡夏河村,2008年11月~12月,为配合郑(州)武(汉)高速铁路建设,湖北省文物考古所对该遗址进行了抢救性发掘。遗址包含新石器时代和西周两个时期的文化遗存。新石器时代遗存发现有石家河文化晚期的瓮棺和房址,出土器物有鼎、钵、高领罐、缸、擂钵等。西周时期遗迹多为灰坑、烧土堆积和房址,从鬲、罐、盂、豆等器物组合和形态来看,相当于西周晚期。     

迟发展效应的后发劣势与后发优势--对西部大开发的启示

介绍了迟发展效应的概念,论述了其负面效应与正面效应--后发劣势与后发优势的内涵及相互转化。对我国西部大开发的启示是,西部欠发达地区能否崛起,能否赶上并超过先发地区的关键,是看其能否将经济发展理论及建设经验与当地的具体情况有机地结合起来,恰当地选择区域开发战略和经济发展的切入路径和突破点,适时地采取一些积极应对策略措施,挖掘、激活后发劣势中的正面效应,强化其相对优势成分,抑制其负面影响,顺利地跨越\"瓶颈\",创造性地找到一条适合自己的发展道路,从而成功地将后发劣势转化为后发优势。