Download Bonebeds: Genesis, Analysis, and Paleobiological by Raymond R. Rogers, David A. Eberth, Anthony R. Fiorillo PDF

By Raymond R. Rogers, David A. Eberth, Anthony R. Fiorillo

The vertebrate fossil checklist extends again greater than 500 million years, and bonebeds—localized concentrations of the skeletal is still of vertebrate animals—help unencumber the secrets and techniques of this lengthy heritage. frequently spectacularly preserved, bonebeds—both smooth and ancient—can demonstrate extra approximately lifestyles histories, ecological institutions, and upkeep styles than any unmarried skeleton or bone. therefore, bonebeds are often studied by way of paleobiologists, geologists, and archeologists looking to piece jointly the vertebrate record.Thirteen revered researchers mix their stories in Bonebeds, delivering readers with achievable definitions, theoretical frameworks, and a compendium of contemporary concepts in bonebed facts assortment and research. via addressing the historic, theoretical, and functional features of bonebed examine, this edited volume—the first of its kind—provides the historical past and strategies that scholars and execs have to discover and comprehend those awesome files of historical existence and death. 

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Additional info for Bonebeds: Genesis, Analysis, and Paleobiological Significance

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Rogers and Susan M. Kidwell composition to paleoenvironmental conditions during the hiatus. Data presented in Rogers and Kidwell (2000) suggest that residual lag concentrations of vertebrate skeletal debris should tend to be autochthonous to parautochthonous in a spatial sense, due to the apparent strong dependence of lag development on preexisting local sources of skeletal material. However, this does not imply autochthony or parautochthony in any ecological sense, because bioclasts can be preserved in a completely different sedimentary context than their in-life habitat.

Rogers and Kidwell (2000) focused on the significant role of preexisting sources in their analysis of vertebrate skeletal concentrations and discontinuity surfaces in terrestrial and marine facies in the Cretaceous Two Medicine and Judith River Formations of Montana. They identified sites on the floodplain where physicochemically resistant vertebrate hardparts accumulated to concentrated levels via attritional processes (see below), and provided physical stratigraphic and taphonomic evidence for the fluvial reworking of preexisting floodplain concentrations into channel-hosted microvertebrate assemblages (see also Rogers, 1995).

Kidwell variety of bonebeds. Our categories are intentionally broad in scope, with the hope that they will be applicable under most biostratinomic circumstances. Generalizations that pertain to genesis and expected taphonomic signatures (damage states) and bias levels (degrees of time averaging, fidelity to life habitat) are based on natural history studies, actualistic studies, and stratigraphic investigations, and here much work remains to be done—we certainly do not suggest that our community’s understanding is now complete.

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