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Volumen 4. Number 3. Year 2006.

2019-11-06T21:41:07+02:00October 26th, 2019|Volumen 4. Number 3. Year 2006.|

VOLUME 4. NUMBER 3. 2006

Taphonomic Alteration and Evolutionary Taphonomy.

Sixto R. Fernández-López

Keywords: PRESERVATION POTENTIAL, TAPHONOMIC DURABILITY, FOSSILIZATION POTENTIAL, FOSSILIZATION THEORY, AMMONITES

[+info] VOLUME 4. NUMBERS 3. 2006 (1 issue)

Every process of taphonomic alteration implies change and modification of the affected taphonomic elements, but it does not necessarily lead to the destruction of taphonomic elements. Taphonomic alteration can be of four types: elementary, populational, taphonic and taphocladal. In order to interpret the differential preservation of fossils and fossilization mechanisms it is necessary to take in mind not only the original architecture of taphonomic elements and the environmental changes, but also the successive changes in architecture of taphonomic elements and the activities carried out by taphonomic elements, as well as the evolutionary modifications of taphons and taphoclades. This systemic and evolutionist procedure allows to explain how the representatives of some taphons or taphoclades have been able to end up being preserved outside of the limits of tolerance of the originally produced taphonomic elements.

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Taphonomic Characteristics of Micromammals Predated by Small Mammalian Carnivores in South Africa: Application to Fossil Accumulations.

Thalassa Matthews

Keywords: SMALL CARNIVORES, MICROMAMMALS, TAPHONOMY, PREDATOR, PREY

[+info] VOLUME 4. NUMBERS 3. 2006 (2 issue)

Micromammal (Murid, Soricid, Macroscelid and Chrysochlorid) bones and teeth may become incorporated into palaeontological and archaeological sites through the deposition of scats from small carnivores, or the regurgitated pellets of owls or diurnal birds of prey. The pellets and scats disaggregate over time leaving behind accumulations of micromammal bones and teeth. Such accumulations are frequently used in palaeoclimatic and palaeoecological research. This paper presents the results of a comparative taphonomic study of the micromammal assemblages recovered from the scats of some African species of small mammalian carnivore (including the genet (Genetta genetta), caracal (Felis caracal) and serval (Felis serval)) with the aim of investigating the digestion patterns produced by these predators in order to ascertain what taphonomic signature they are likely leave in fossil micromammal accumulations. The incisor digestion patterns from the comparative assemblages suggest that certain African small carnivores produce assemblages with 100% of teeth showing light to moderate digestion. The taphonomic signature of the caracal is compared to that of other previously researched felid species and results indicate that there is considerable variation within the Felidae. The incisor digestion patterns of the small carnivores investigated suggest that the mixing of a small carnivore assemblage from a predator such as the genet with a category 1 predator would produce a pattern of incisor digestion similar to that produced by a category 2 or category 3 predator. It is clearly important to establish the taphonomic patterns of assemblages produced by southern African small carnivore species in order to ascertain exactly what characteristics distinguish the small carnivores scat assemblages from each other, and from other categories of predator. This is turn will provide information which can be used to identify and interpret fossil micromammal assemblages which have been accumulated by more than one species of predator.

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Surveying for Ungulate Skeletal Remains in Mediterranean Mountainous Habitats: a Quantitative Approach and Potential Use in Population Dynamics.

Emmanuel Serrano, Jesús M. Pérez , Charles P. Egeland, Pere Bover, Luis Gállego.

Keywords: BONE REMAINS, POPULATION MONITORING, MORTALITY RATES, UNGULATES

[+info] VOLUME 4. NUMBERS 3. 2006 (3 issue)

Our research has estimated the frequency of occurrence of bone remains from ungulates in the Mediterranean area (Sistema Bético). We sampled a total of 36 transects and found an average of 4.9 ungulate bones per transect. Despite three fairly complete carcasses collected, still bearing soft tissues, long bones from the appendicular skeleton are the most common element type. The use of this source of data within global monitoring programs of wild ungulate populations is discussed.

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Volumen 12. Number 1. Year 2014.

2019-11-06T23:04:03+02:00October 26th, 2019|Volumen 12. Number 1. Year 2014.|

VOLUME 12. NUMBERS 1. 2014

Arctic Wolf and Spotted Hyena Gnawing Damage on an Experimental Faunal Assemblage.

Alexander Nascou, Eugène Morin.

Keywords: CARNIVORE TAPHONOMY, HYENAS, WOLVES, EXPERIMENT, TOOTH MARKS, PALEOLITHIC

[+info] VOLUME 12. NUMBERS 1. 2014 (1 issue)

Humans compete with carnivores for animal resources. As a result of this competition and because carcasses can be used sequentially by different classes of predators, it is often difficult to identify the agent of accumulation in archaeological settings. If efficiency in feeding behaviour has been selected for, it may be possible to use such behavioural predispositions to predict the manner in which a faunal assemblage will be modified. To assess this problem, we performed a series of feeding experiments with captive arctic wolves and spotted hyenas. Our results suggest that these species produce predictable patterns of gnawing damage on skeletal elements when key variables are manipulated, including prey body size and the presence of intact marrow cavities. Patterns of gnawing damage also appear to be associated with bone density, developmental age, and the amount of adhering flesh. The effect of these factors also appears to vary between carnivore species. Further understanding of carnivore ecology and behaviour will be useful to archaeozoologists and palaeontologists who are faced with complex site formation processes involving multiple agents.

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Taphonomic analysis of small ungulates modified by fox (Vulpes vulpes) in Southwestern Europe.

José Yravedra Sainz de los Terreros*, Miriam Andrés, Philippe Fosse, Jean Pierre Besson.

Keywords: FOX, CARNIVORES, TOOTH MARKS, TAPHONOMY, SMALL UNGULATES

[+info] VOLUME 12. NUMBERS 1. 2014 (2 issue)

The interaction between humans and carnivores regarding bone modification is a frequent taphonomic phenomenon generating palimpsest where the activity of both agents is present. However, recent research has mainly been concerned with the identification of their individual action. In the case of carnivores, hyenas and felids were the most studied species, while other animals were virtually postponed in the agenda. Considering the abundance of fossil evidence of foxes in the European Pleistocene, this paper presents new data for the taphonomic characterization of fox behaviour. Thus, our interest is to improve the referential framework available for this carnivore's action aiming at its identification in the Pleistocene fossil record. Hence, we describe the analysis of two modern assemblages modified by foxes: the first one corresponds to a natural-death assemblage near Ayllón (Segovia, Spain) and the second to a den site in Ourtiaga (Pyrenées, France). In order to characterise fox action, we analyse its behaviour by means of the analysis of tooth marks and fracture patterns. Regarding the former, mark frequency, types, dimensions and distribution are considered. Finally, with the intention of discriminating fox behaviour from human action, we simulated tooth mark frequencies and distribution on a carcass which was previously fractured by humans.

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Taphonomy of a fish accumulation by the European Otter (Lutra lutra) in central France.

Emilie Guillaud, Philippe Béarez, Christiane Denys, Stéphane Raimond.

Keywords: OTTER, PREDATOR, DIGESTION, SPRAINTS, FISH BONES, TAPHONOMY

[+info] VOLUME 12. NUMBERS 1. 2014 (3 issue)

Fish remains are abundant and easily recognizable in many archaeological sites. But, the origin of such assemblages is generally poorly known. However, the ability to create small fish bone accumulations is restricted to a small number of predators (including raptors, carnivores, and humans). In order to recognize the agents responsible for these concentrations in archaeological sites, we have investigated the taphonomy of the fish remains from otter spraints to determine the potential role of otters in the formation of fossil assemblages. Currently, few data are available to characterize the accumulation of otter remains in natural or archaeological sites. We analyzed a collection of 29 otter spraints from Bugeat (Corrèze) in central France. We identified the remains of nine fish species including, brown trout ((Salmo trutta, Salmonidae), perch (Perca fluviatilis, Percidae), pumpkinseed (Lepomis gibbosus, Centrarchidae), and several Cyprinidae, rudd (Scardinius erythrophthalmus), minnow (Phoxinus phoxinus), bullhead (Cottus gobio) and the indeterminate pair chub/dace (Squalius cephalus/Leuciscus leuciscus). The species and the body parts present, along with the reconstruction of the fish weight and observations of any modifications, such as deformation, rounding and polishing, give us insight into otter prey categories and their transformation after digestion. Among the ca. 200 bones constituting the whole fish skeleton, only between 6 and 39 bones survived according the different species. Cyprinids display a high moderate digestion grade and seems to be the taxon most affected by digestion (64.67%). Based on surface modifications, such as breakage and digestion traces, as well as bone element representation, we produced a set of criteria as a new tool to be applied to the fossil record.

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The Taphonomist´s Corner: Deciphering dinosaur motion through a track.

Alberto Cobos, Luis Alcalá.

Keywords

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