首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
    
Mollusks were an important component in the diet of the hunter-gatherer groups that inhabited the coastal zones of South America during the Holocene, as recorded in the littoral shell and archaeological sites distributed from Brazil to Argentina. Although the shells are relatively resistant to physical and chemical agents, they are also fragile and various post-depositional processes affect their integrity. Puente de Fierro is an archaeological site located in the south of Buenos Aires province (Argentina), in which remains of the yellow clam (Amarilladesma mactroides) were recovered totally fragmented. We investigate if a morphometric model based on modern clams could be applied to estimate shell size and individual biomass of archaeological clams. Linear regression models reveal a high correlation between the chondrophore length and the shell length, and therefore, the individual biomass of the yellow clam.  相似文献   

2.
New bird fossils from the Santa Cruz Formation (lower–middle Miocene), Santa Cruz Province, Patagonia, Argentina, are described. They represent an indeterminate species of the extinct anhingid Macranhinga and a new genus and species of basal Anatidae Ankonetta larriestrai. The record of the giant darter Macranhinga constitutes the southernmost record for the family, and expands the known stratigraphic range of the genus, previously restricted to the upper Miocene. Based on an analysis of the fossil anhingid record from South America, we hypothesize that giant darters disappeared from South America in the early Pliocene due to climatic deterioration, regression of marine and freshwater environments, the arrival of placental carnivorous mammals, and also probably by competition with phalacrocoracid cormorants. The new anatid Ankonetta is based on an incomplete but informative tarsometatarsus, with superficial similarities to extant Dendrocygna. A brief overview of several fossil ducks from the Patagonian Cenozoic concludes that most pre-Pliocene examples belong to non-anatine taxa, indicating that plesiomorphic ducks were the dominant anseriforms in those times, a pattern also evident on other continents.  相似文献   

3.
Vertebrate remains from two stratified sites, the Quebrada Jaguay site (QJ-280) and the Ring Site, reveal details about economic strategies practiced between 13,145 and 7500 cal yr BP on the southern coast of Perú. The near absence of terrestrial resources, a broad continuity in economic activities focused on marine resources, and flexibility within the overall strategy, are among the most interesting aspects of these data. Although they reflect economic and social decisions driven, in part, by fluctuations in environmental conditions, they demonstrate that people were sophisticated strategists actively responding to dynamic environmental conditions.  相似文献   

4.
    
Bioarchaeological research of bone growth patterns provides information on the health status and disease of past populations. Recent studies have pointed out the potential of metric analysis of nonadult vertebrae as indicators of stress during different stages of ontogeny, highlighting that most vertebral measurements present low sexual dimorphism, a stable and known pattern of growth and give useful information even in incomplete spines. The aims of this paper are first, to construct a vertebral growth profile for nonadults of a skeletal series of Patagonian Late Holocene hunter-gatherers from Salitroso Lake (SAC); second, to compare it to the ones obtained in other archaeological and modern populations with different stress experiences; and third, building on this, to assess whether individuals with evidence of stress experienced in early development demonstrate different patterns in vertebral growth than those without. Two spinal dimensions are used: vertebral body height (VBH) and transverse diameter of the neural canal (TDNC) in a sample of 23 nonadult skeletons with ages previously estimated from dental and bone indicators. The vertebral dimensions of 20 adults between 18 and 35 years of age were also measured as reference information. Results show that the growth of the VBH is steady over the years and reaches adulthood size by approximately 16 years of age whereas TDNC dimensions do not experience marked fluctuations in size throughout life and adult dimensions are reached at approximately 4 years of age as expected. The vertebral growth pattern observed in SAC is similar to that obtained in other archaeological samples from very different settings but experiencing relatively high nutritional or pathological stress in early stages of life. However, it is markedly different, and systematically smaller, to the 20th century sample pattern, probably responding to a secular trend in the modern population with a more stable access to resources and medical treatment. Finally, SAC individuals with systemic stress markers do not tend to exhibit smaller vertebral dimensions than those without them.  相似文献   

5.
Many publications have appeared dealing in whole or part with breeds of hij 1 cattle in Scotland, but none approach this subject from a geographical standpoint. This is perhaps surprising in view of the fact that the various breeds have long been an important element in the cultural landscape. Moreover, during the past thirty years their numbers have increased fivefold to some 380,000 and profound changes have taken place in the traditional breed structure. It is the purpose of this paper to fill in part this gap by describing and explaining, in a general way, the distribution of the main breeds and crosses.  相似文献   

6.
In Argentine Patagonia, the type of archaeological burial “in pit” has been only identified on the coast of Lángara Bay. This modality is characterized by the presence of single and multiple primary burials. Studies on five human burials in pits are presented in this article. The aim is to compare the contexts of burials in pit at the site level and the spatial characteristics of their distribution in the Lángara Bay locality from a diachronic perspective. The approach focuses on mortuary practices and social relations of hunter-gatherer groups during the Late Holocene. A characterization of the burials, their chronologies, bioarchaeological determinations, stable isotope studies, and their spatial distribution are included. The results allow us to chronologically place the contexts between ca. 3000 and 2000 cal BP. A spatial pattern in the distribution of burials in the coastal landscape was identified. Finally, it is proposed that this part of the Patagonian coast was a persistent place of burials in pit.  相似文献   

7.
    
The productid brachiopod genus Jakutoproductus, dominant in the Early Permian marine faunas of northeastern Siberia, is described for the first time from the southern hemisphere. Jakutoproductus australis sp. nov. is described from the Rio Genoa Formation, Chubut Province (Patagonia), Argentina. The age of the Patagonian species is considered to be Sakmarian (Early Permian), possibly Sterlitamakian.  相似文献   

8.
    
This work presents bioarchaeological patterns of interpersonal violence inferred for Northeastern Patagonia (Argentina) during the late Holocene. The main goal is to evaluate if there is a significant increase in the frequency of indicators of violence during the final late Holocene, prior to colonial times, in possible concordance with the Medieval Climatic Anomaly (ca. 1150–600 years BP). A sample of skulls (n = 797) was studied through a series of methodological steps that included the evaluation of their state of preservation and the study of potential injuries, taking into account the degree of ambiguity of the diagnosis. The sample was divided into three chronological groups: early (ca. 3500–2500 years BP), middle (ca. 2500–1500 years BP) and late (ca. 1500–400 years BP). The individuals were also separated according to sex, age category and geographical distribution. Although a temporal trend toward increased violence was detected, it was not statistically significant. There was also a higher percentage of positive cases in Northern individuals compared to the Southern ones, and between males compared to females, but neither case had statistically significant differences. Alternative mechanisms, such as population dispersals, exchange and use of buffer areas, that may have functioned to dispel social tensions, are proposed. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   

9.
    
While iron and steamship archaeology dates from the mid-1970s, the archaeological study of late 19th and early 20th century metal-hulled vessels, especially those off the coast of South America is in its infancy. This paper deals with two steel-hulled shipwrecks located on the coast of Patagonia, southern Argentina, from anthropological, archaeological, and site management perspectives. The chief research questions discussed relate to each vessel's role and use on a remote coast, the technology involved in their operation, and the site formation processes following the vessels’ loss. Their management as a recently acknowledged part of the region's ‘patrimony’ (cultural heritage) and their presentation to an increasingly aware public are also discussed in the context of each site's unique location.  相似文献   

10.
Fourteen Bivalvia species are described from the Lower Permian Río Genoa Formation, exposed in the southern Tepuel-Genoa Basin (Chubut Province, Argentina), of which one, Fletcheripecten genoensis, is new. The studied specimens are well preserved, retaining fine details of the ornament and shell morphology. Palaeotaxodonta is represented by two species of Nuculopsis and four species of Phestia; Pteriomorphia by five species in five genera; and Heteroconchia by three informal species. Most of the species recorded also occur in the northern part of Tepuel-Genoa Basin and allow demarcation of new and distinct marine intervals in the Río Genoa Formation, which was classically interpreted to represent continental deposits. The bivalve fauna confirms a Cisuralian (Early Permian) age for the Río Genoa Formation and offers potential for improved regional and global correlations.  相似文献   

11.
This paper incorporates an experimental approach to the study of violence patterns in Northeastern Patagonia (Argentina) during the late Holocene. The underlying hypothesis considers a close association between socio-ecologic alterations during the Medieval Climatic Anomaly (MCA) (ca. 1150-600 years BP; Stine, 1994, 2000) and a probable increase in conflict levels. In order to test this hypothesis, human skulls (n = 986) were analyzed for bone lesions, discriminating late bone lesions, such as those produced by metal tools. The experimental approach used swine (Sus scrofa domestica) skulls, as proxies for human skulls, and incorporated original sabers. From this discriminating analysis, it can be inferred that no significant increase in violence signs were recorded until the first stages of Hispanic-indigenous contact (first half of 17th century). These findings emphasize the need for a revision of the implications of the dynamics of human populations in Northeastern Patagonia during the late Holocene.  相似文献   

12.
    
Archeological assemblages of osseous material culture are rare in the Australian context, especially in the north where environmental conditions are not usually conducive to organic preservation. Nevertheless, more than 230 bone artifacts were recovered from the site of Madjedbebe, located in the Mirarr clan estate of the Alligator Rivers region of the Northern Territory. Of these artifacts, 199 have been identified to tool type. Here, we present the analysis of this exceptional assemblage, including the recovery of one-piece jabbing fishhooks, numerous fishing-spear tips, fragments of weaving tools, and possible osseous elements originating from ornamental pieces. The size and diversity of the Madjedbebe osseous technology assemblage is unique in the north and provides new insights into the lives of Mirarr peoples over the past 7,000 years.  相似文献   

13.
    
ABSTRACT

The Namib Desert coast is rich in potential food resources, but its extreme aridity imposed severe limits on human settlement in the past. It appears that intensive use of the coast began in the Middle Holocene, although there is evidence of intermittent occupation from the Middle Pleistocene. Coastal sites were closely linked to the desert interior and movement between the two was mainly via the linear oases of ephemeral river systems. Contact was at first sporadic but regular trade with merchant vessels was established in the mid-eighteenth century AD. Coastal geomorphological processes determined the location and accessibility of marine resources used by hunter-gatherer and nomadic pastoral communities. At the same time, marine, fluvial, and aeolian processes have influenced the visibility and survival of archaeological evidence on the coast.  相似文献   

14.
    
In this work, we study diet composition of prehistoric human populations of Northwest Patagonia by exploring the combination of two different approaches frequently used in bioarchaeology, Bayesian isotope mixing models, and zooarchaeological analysis. For this purpose, we compiled a large dataset of previously published δ13C and δ15N human and resource values, as well as zooarchaeological data, corresponding to the Middle–Late Holocene and distributed throughout Northwest Patagonia. We first propose a replicable approach to divide the region into different areas comprising human individuals that shared the same available resources and perform isotope mixing models at individual level using default (i.e., uninformative) prior distributions in the Bayesian mixing models. Then, we explore a potential complementation of isotopic and zooarchaeological evidence by introducing the frequency of zooarchaeological assemblages with the different resources, as well as NISP, as priors in the Bayesian mixing models to guide diet estimations. Additionally, we use these frequencies to analyze the possible absence of some important resources in previous analyses. Based on the species distribution and geographical location of bioarchaeological sites, we divided the region into five areas (Northwest and Northeast Neuquén, South Neuquén/Rio Negro, and Southwest and Central-east Mendoza) that differ in the resources available for potential human consumption. The results obtained show high diet variability among these areas, with individuals from Northwest and Northeast Neuquén consuming mainly large animals (i.e., guanaco and rhea, respectively) and South Neuquén/Rio Negro and Center-east and Southwest Mendoza consuming a larger diversity of resources. Our results show that considering zooarchaeological priors in the analyses results in diet composition estimations more in line with the ecological diversity present in the region than previous estimations. We propose that approaches like this, which are common in ecological studies, should be considered in bioarchaeology to make more robust estimates of diet composition.  相似文献   

15.
16.
    
Recent developments in evolutionary psychology expanding on signaling theory provide key insights to the connections between expressing social commitments and resource rights. Credibility enhancing displays (CREDs) are a means to convince individuals of commitment to belief systems and can link costly acts or extravagant displays to social success. In the Salish Sea, the transition from labrets to cranial modification from 3200 to 1000 BP has often been framed in terms reflecting a shift from achieved to ascribed social status. Other researchers have argued that labrets may reflect village scale identity not tied to political power. We suggest that an explicitly evolutionary approach provides novel insights into the changing material expressions of Coast Salish social commitments, specifically reciprocal resource access. The shift to cranial modification reflects increased CRED investment and cost, but not necessarily a transition towards ascribed status. Instead this shift may be changing expressions of the same forms of social commitments.  相似文献   

17.
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.  相似文献   

18.
    
Brea, M., Zamuner, A.B., Matheos, S.D., Iglesias, A. & Zucol, A.F., December, 2008. Fossil wood of the Mimosoideae from the early Paleocene of Patagonia, Argentina. Alcheringa 32, 427–441. ISSN 0311-5518.

An anatomically preserved mature stem from the Salamanca Formation (early Paleocene) at Palacio de Los Loros, central Patagonia, Argentina, is described and assigned to Paracacioxylon frenguellii sp. nov. The material was preserved by siliceous permineralization and shows features of the secondary xylem typical of subfamily Mimosoideae. This species represents the oldest record of the genus and of the Leguminosae along the western border of Gondwana, and is the world's second oldest record of Leguminosae wood. The species is characterized by ring-porous to semi-ring-porous vessels that are solitary, in multiples of 2–4 and clustered, simple perforation plates, alternate and vestured inter-vessel pitting, homocellular 1–6 seriate rays, tyloses, crystals and diffuse apotracheal, vasicentric paratracheal and confluent axial parenchyma. Paracacioxylon frenguellii has anatomical similarities to Acacia Miller. The presence of Paracacioxylon frenguellii associated with pulvinate leaves suggests that the legumes might have been a component of mesothermal forests developed along the western margin of the Golfo San Jorge Basin during the early Paleocene.  相似文献   

19.
幕末日本的海洋国家论   总被引:1,自引:0,他引:1  
确切地说,幕末日本海洋国家思想的发展以1778年俄国商船来蝦夷要求通商为契机。与幕府的锁国海防相对,林子平、本多利明、佐藤信渊等思想家也纷纷提出了海防思想及海洋国家论,其特点以开国海防与开拓海防为主。锁国海防、开国海防与开拓海防,成为幕末海洋国家论的有机构成。  相似文献   

20.
    
Two great white shark (Carcharodon carcharias) teeth recovered in a terrestrial mammal hunter‐gatherers context in the Pampas are described. Associated lithic (mainly quarzite) tools, and the predominant exploitation of the Lama guanicoe relate the ancient inhabitants of the site with those of the early‐middle Holocene sites of the Area Interserrana of the Provincia de Buenos Aires. According to the stratigraphic context and the terrestrial fauna, the age of the deposit seems to be constrained to the early‐middle Holocene. The root tips of the shark teeth are marked by an artificial transvers groove fitted to tie a thread. Tooth edge serrations are strongly eroded, suggesting they were used as tools. We favour the hypotheses that the fish could have stranded on the beach or a small estuary in the neighbourhood, or that the teeth were obtained from the body of a pinniped attacked by a shark and sobsequenty found by humans. Copyright © 2003 John Wiley & Sons, Ltd.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号