Taphonomy: Difference between revisions

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	] and serpulid worm encrusters on a modern bivalve shell, North Carolina.]]
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	'''Taphonomy''' is the ] of a decaying ] over time. The term taphonomy, (from the Greek ''taphos'' meaning burial, and ''nomos'' meaning law), was introduced to ] in 1940 by Russian scientist, ], to describe the study of the transition of remains, parts, or products of ]s, from the ], to the ], ''i.e.'' the creation of ] assemblages, (''e.g.'' see Shipman 1981 p.5-6, Greenwood 1991, Lyman 1994).

	Taphonomists study such phenomena as ], ], ], and encrustation and ] by sclerobionts (see Taylor and Wilson, 2003).

	The primary motivation behind the study of taphonomy is to better understand biases present in the ] record. Fossils are ubiquitous in sedimentary rocks, yet ]s cannot draw the most accurate conclusions about the lives and ecology of the fossilized organisms without knowing about the processes involved in their fossilization. For example, if a fossil assemblage contains more of one type of fossil than another, one can either infer that that organism was present in greater numbers, or that its remains are more resistant to decomposition.

	During the late ], taphonomic data began to be applied to other paleontological subfields such as ], ], ] (the study of ]) and ]. By coming to understand the ] and ] implications of observed taphonomic patterns, paleontologists have been able to provide new and meaningful interpretations and correlations that would have otherwise remained obscure in the ].

	] ] in Imperial-Diamond cave (]).]]
	] study taphonomic processes in order to determine how plant and animal (as well as human) remains accumulate and differentially preserve within archaeological sites. This is critical to determining whether these remains are associated with human activity. In addition, taphonomic processes may alter biological remains after they are deposited at a site. Some remains survive better than others over time, and can therefore bias the excavated collection.

	Within archaeology the term taphonomy has now been wrongly expanded from just plant and animal remains to include all parts of the archaeological record - from how buildings collapse over time to form the archaeologically found features to the degradation of excavated items whilst housed within a store. This is commonly referred to as site formation processes.
	The example given in the original text suggested that a study at the University of Bradford looked at the increased damage to the stored skeletal collections over time due to their use for study by doctoral and post-doctoral students, i.e. the modification of the human remains. The study lead to a standardized method of packing the remains to minimize damage. The example is correct but most pathological researchers would argue that taphonomy solely applies to the death, decay, and modification process of living organism.{{Fact\|date=February 2007}}.

	Experimental taphonomy ''testing'' usually consists of exposing the remains of organisms to various altering processes, and then examining the effects of the exposure.

	== References ==
	*Efremov, I. A. (1940), Taphonomy: a new branch of paleontology. ''Pan-American Geology'' 74:81-93.
	*Greenwood, D. R. (1991), The taphonomy of plant macrofossils. In, Donovan, S. K. (Ed.), ''The processes of fossilisation'', pp.141-169. Belhaven Press.
	*Lyman, R. L. (1994), ''Vertebrate Taphonomy.'' Cambridge University Press.
	*Shipman, P. (1981), ''Life history of a fossil: An introduction to taphonomy and paleoecology''. Harvard University Press.
	*Taylor, P. D. and Wilson, M. A. (2003), Palaeoecology and evolution of marine hard substrate communities. ''Earth-Science Reviews'' 62:1-103.

	== External links ==

	* The is the first long-term large-scale deployment and re-collection of organism remains on the sea floor.
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	* Bioerosion Website at ]
	* Comprehensive bioerosion bibliography compiled by Mark A. Wilson

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Revision as of 14:38, 14 April 2008

8=======D14:38, 14 April 2008 (UTC)~ (.Y.)