Experimental Use of Clovis Weaponry and Tools on African Elephants

1989 ◽  
Vol 54 (4) ◽  
pp. 766-784 ◽  
Author(s):  
George C. Frison
Keyword(s):  
National Park ◽  
Stone Tools ◽  
Stone Tool ◽  
Archaeological Sites ◽  
African Elephants ◽  
Projectile Points ◽  
Chipped Stone ◽  
Positive Statements ◽  
Hwange National Park ◽  
Experimental Use

Clovis projectile points and chipped-stone tools have been recovered in a number of archaeological sites in the New World, but these cannot be tested on mammoths, which we know from the archaeological evidence Clovis hunters were able to procure. Extensive culling of elephants in Hwange National Park in Zimbabwe provided the necessary animals to test replicas of Clovis tools and weaponry. The experiments leave little doubt that Clovis projectile points can inflict lethal wounds on African elephants and that simple stone tools will perform the necessary butchering tasks. The physiology of mammoths and elephants is similar enough to make positive statements on the potential of this kind of stone-tool and weaponry assemblage, but we will never be able to compare elephant and mammoth behavior directly.

Home range and space use by African elephants ( Loxodonta africana ) in Hwange National Park, Zimbabwe

2021 ◽  
Author(s):  
Liberty Mlambo ◽  
Munyaradzi Davis Shekede ◽  
Elhadi Adam ◽  
John Odindi ◽  
Amon Murwira
Keyword(s):  
Home Range ◽  
National Park ◽  
Space Use ◽  
Loxodonta Africana ◽  
African Elephants ◽  
Hwange National Park

Spatial relationship between elephant and sodium concentration of water disappears as density increases in Hwange National Park, Zimbabwe

2007 ◽  
Vol 23 (6) ◽  
pp. 725-728 ◽  
Author(s):  
Simon Chamaillé-Jammes ◽  
Hervé Fritz ◽  
Ricardo M. Holdo
Keyword(s):  
National Park ◽  
Spatial Relationship ◽  
Sodium Concentration ◽  
African Elephants ◽  
Mineral Concentration ◽  
Savanna Vegetation ◽  
Selection Processes ◽  
Elephant Population ◽  
Hwange National Park ◽  
Nutrient Selection

African elephants Loxodonta africana (Blumenbach) may profoundly affect vegetation and associated animal bio-diversity in savannas (Conybeare 2004, Skarpe et al. 2004). Understanding the patterns of habitat use by elephants is crucial to predict their impacts on ecosystems (Ben-Shahar 1993, Nelleman et al. 2002), particularly now that many populations are recovering from past culling events or poaching outbreaks (Blanc et al. 2007). Surface water is one of the major constraints on elephant distribution (Chamaillé-Jammes et al. 2007, Stokke & du Toit 2002), and accordingly, elephant impacts are higher in the vicinity of water (Ben-Shahar 1993, de Beer et al. 2006). However, waterhole selection by elephant remains poorly understood. Weir (1972) showed in Hwange National Park (hereafter Hwange NP), Zimbabwe, that elephant numbers at waterholes over 24 h increased with the sodium concentration of water on nutrient-poor Kalahari sands. His work has become widely cited in elephant studies as it remains the only one, to the best of our knowledge, to have studied elephant use of waterholes in relation to the mineral concentration of water. Weir's work, however, took place when elephant densities in Hwange NP were low, likely below 0.5 elephants km−2 as estimated by aerial censuses (Williamson 1975). Since then, the elephant population has increased dramatically, particularly since the halt to culling operations in 1986 (Chamaillé-Jammes 2006, Cumming 1981). The present elephant density is much higher, estimated to be over 2 elephants km−2 (Chamaillé-Jammes et al. 2007, in press), and is one of the highest in the world (Blanc et al. 2007). Increased density may modify ecological constraints and affect the hierarchy of habitat selection processes (Morris 2003), and the extent to which water-nutrient selection still constrains elephant distribution at high population density – when their impact on savanna vegetation is the highest – remains unknown.

Experimental and Archaeological Verification of an Index of Retouch for Hafted Bifaces

2006 ◽  
Vol 71 (4) ◽  
pp. 743-757 ◽  
Author(s):  
William Andrefsky
Keyword(s):  
Experimental Data ◽  
Land Use ◽  
Stone Tools ◽  
Stone Tool ◽  
Data Set ◽  
X Ray ◽  
Projectile Points

The relative amount of retouch on stone tools is central to many archaeological studies linking stone tool assemblages to broader issues of human social and economic land-use strategies. Unfortunately, most retouch measures deal with flake and blade tools and few (if any) have been developed for hafted bifaces and projectile points. This paper introduces a new index for measuring and comparing amount of retouch on hafted bifaces and projectile points that can be applied regardless of size or typological variance. The retouch index is assessed initially with an experimental data set of hafted bifaces that were dulled and resharpened on five occasions. The retouch index is then applied to a hafted biface assemblage made from tool stone that has been sourced by X-Ray Fluorescence (XRF). Results of both assessments show that the hafted biface retouch index (HRI) is effective for determining the amount of retouch and the degree to which the hafted bifaces have been curated.

scholarly journals Habitual Stone-Tool Aided Extractive Foraging in White-Faced Capuchins, Cebus Capucinus

2018 ◽  
Author(s):  
Brendan J Barrett ◽  
Claudio M Monteza-moreno ◽  
Tamara DOGANDŽIĆ ◽  
Nicolas Zwyns ◽  
Alicia IBÁÑEZ ◽  
...  
Keyword(s):  
Tool Use ◽  
National Park ◽  
Resource Limitation ◽  
Stone Tools ◽  
Cebus Capucinus ◽  
Hermit Crabs ◽  
Stone Tool ◽  
Extractive Foraging ◽  
First Case ◽  
One Year

ABSTRACTHabitual reliance on tool use is a marked behavioral difference between wild robust (genus Sapajus) and gracile (genus Cebus) capuchin monkeys. Despite being well studied and having a rich repertoire of social and extractive foraging traditions, Cebus sp have rarely been observed engaging in tool use and have never been reported to use stone tools. In contrast, habitual tool use and stone-tool use by Sapajus is widespread. We discuss factors which might explain these differences in patterns of tool use between Cebus and Sapajus. We then report the first case of habitual stone-tool use in a gracile capuchin: a population of white-faced capuchins (Cebus capucinus imitator) in Coiba National Park, Panama who habitually rely on hammerstone and anvil tool use to access structurally protected food items in coastal areas including Terminalia catappa seeds, hermit crabs, marine snails, terrestrial crabs, and other items. This behavior has persisted on one island in Coiba National Park since at least 2004. From one year of camera trapping, we found that stone tool use is strongly male-biased. Of the 205 unique camera-trap-days where tool use was recorded, adult females were never observed to use stone-tools, although they were frequently recorded at the sites and engaged in scrounging behavior. Stone-tool use occurs year-round in this population, and over half of all identifiable individuals were observed participating. At the most active tool use site, 83.2% of days where capuchins were sighted corresponded with tool use. Capuchins inhabiting the Coiba archipelago are highly terrestrial, under decreased predation pressure and potentially experience resource limitation compared to mainland populations– three conditions considered important for the evolution of stone tool use. White-faced capuchin tool use in Coiba National Park thus offers unique opportunities to explore the ecological drivers and evolutionary underpinnings of stone tool use in a comparative within- and between-species context.

scholarly journals Habitual stone-tool-aided extractive foraging in white-faced capuchins, Cebus capucinus

2018 ◽  
Vol 5 (8) ◽  
pp. 181002 ◽  
Author(s):  
Brendan J. Barrett ◽  
Claudio M. Monteza-Moreno ◽  
Tamara Dogandžić ◽  
Nicolas Zwyns ◽  
Alicia Ibáñez ◽  
...  
Keyword(s):  
Tool Use ◽  
National Park ◽  
Resource Limitation ◽  
Stone Tools ◽  
Cebus Capucinus ◽  
Hermit Crabs ◽  
Stone Tool ◽  
Extractive Foraging ◽  
Marine Snails ◽  
First Case

Habitual reliance on tool use is a marked behavioural difference between wild robust (genus Sapajus ) and gracile (genus Cebus ) capuchin monkeys. Despite being well studied and having a rich repertoire of social and extractive foraging traditions, Cebus sp. rarely use tools and have never been observed using stone tools. By contrast, habitual tool use by Sapajus is widespread. We review theory and discuss factors which might explain these differences in patterns of tool use between Cebus and Sapajus . We then report the first case of habitual stone tool use in a gracile capuchin: a population of white-faced capuchins ( Cebus capucinus imitator ) in Coiba National Park, Panama who habitually rely on hammerstone and anvil tool use to access structurally protected food items in coastal areas including Terminalia catappa seeds, hermit crabs, marine snails, terrestrial crabs and other items. This behaviour has persisted on one island in Coiba National Park since at least 2004. From 1 year of camera trapping, we found that stone tool use is strongly male-biased. Of the 205 camera trap days where tool use was recorded, adult females were never observed to use stone tools, although they were frequently recorded at the sites and engaged in scrounging behaviour. Stone tool use occurs year-round in this population; over half of all identifiable individuals were observed participating. At the most active tool use site, 83.2% of days where capuchins were sighted corresponded with tool use. Capuchins inhabiting the Coiba archipelago are highly terrestrial, under decreased predation pressure and potentially experience resource limitation compared to mainland populations—three conditions considered important for the evolution of stone tool use. White-faced capuchin tool use in Coiba National Park thus offers unique opportunities to explore the ecological drivers and evolutionary underpinnings of stone tool use in a comparative within- and between-species context.

The Earliest Cultures in the Western United States

1962 ◽  
Vol 28 (2) ◽  
pp. 138-143 ◽  
Author(s):  
Alex D. Krieger
Keyword(s):  
United States ◽  
Food Supply ◽  
Western United States ◽  
Archaeological Sites ◽  
Projectile Point ◽  
Radiocarbon Dates ◽  
Projectile Points ◽  
Chipped Stone ◽  
Point Types ◽  
Geological Position

AbstractNearly all writers on the antiquity of man in America assume that the oldest archaeological sites contain chipped-stone projectile points and therefore cannot exceed an age of some 12,000 to 15,000 years, the estimates usually given to such projectile-point types as Sandia and Clovis. Suggestions of older sites, with radiocarbon dates ranging from some 21,000 years to as much as “greater than 37,000 years,” with simpler artifacts and an absence of stone projectile points, are generally viewed with suspicion if not abhorrence.A recent paper by E. H. Sellards considers seven localities in the western United States and Baja California which, because of geological position and radiocarbon dates, are probably too old to contain stone projectile points. The writer agrees with Sellards that these localities are archaeological (except for that at Texas Street in San Diego, California), but disagrees that those in coastal locations are different from those in inland locations for “ecological” reasons such as food supply and availability of stone. The differences may be explained in that those sites on the shores of extinct lakes were never covered by overburden, whereas those which were covered by alluvium or sand are known to us now only by varying amounts of exposure by erosion or excavation (or both).

Stone Artifacts of Southeastern Alaska

1962 ◽  
Vol 28 (1) ◽  
pp. 66-77 ◽  
Author(s):  
Edward L. Keithahn
Keyword(s):  
Stone Tools ◽  
Northwest Coast ◽  
Southeast Alaska ◽  
Projectile Points ◽  
Stone Artifacts ◽  
Indian Tradition ◽  
Experimental Use ◽  
Stone Artifact

AbstractThe fact that Northwest Coast Indians obtained iron for tool making at least 175 years ago makes it unlikely that any literate person ever saw stone edge tools in use in this area, or even talked with an Indian who had seen them in use. Thus, interpretation of the function of stone tools in southeast Alaska is based on an estimate of the type of tools needed for the known aboriginal industries, experimental use of the tools, and Indian tradition. The use of 25 stone artifact types is discussed, including adzes and similar tools, mauls and hammers, mortars and pestles, lamps and pipes, clubs and fighting tools, projectile points, and ornaments.

4 Chipped Stone Tools

1969 ◽  
Vol 23 ◽  
pp. 31-45
Author(s):  
Roberta S. Greenwood
Keyword(s):  
Stone Tools ◽  
Projectile Points ◽  
Stone Artifacts ◽  
Chipped Stone ◽  
Elementary Technology

The chipped stone artifacts comprise a full tool kit. Ranging in size from the largest of the choppers to the tiniest of the flake scrapers, they conform to a characterization of generalized implements shaped with a minimum of modification. The broad and shallow flaking, unifacial percussion technique, use of flawed lithic material, re-working of artifacts from one kind to another, and the great number of tools retaining cortex and bulb of percussion are typical of the basic simplicity of all classes. Something of a paradox exists between the wide variety of shapes and sizes of the tools, which do tend to fall into groups, and the elementary technology of their manufacture. The major classifications include projectile points and blades, flake knives, drills, gravers, choppers, hammerstones, scrapers, picks, crescents, cores, and flakes.

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