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Docta Complutense
Article . 2000
Data sources: Docta Complutense
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La naturaleza del registro fósil y el análisis de las extinciones

Authors: Fernández López, Sixto Rafael;

La naturaleza del registro fósil y el análisis de las extinciones

Abstract

[ES] El registro fósil es parcial, está sesgado y presenta desorden estratigráfico. Sin embargo, estas propiedades del registro fósil no disminuyen la utilidad de los datos paleontológicos para identificar e interpretar los sucesivos eventos de extinción. La información del registro fósil es la única información disponible sobre los taxones extinguidos y su orden de sucesión. Tanto la validez de los datos paleontológicos respecto a la información disponible en el registro fósil, como la parcialidad y el sesgo del registro fósil respecto a la información paleobiológica original, son susceptibles de contrastación con criterios independientes. La continuidad del registro fósil, al igual que la continuidad del registro estratigráfico, es de naturaleza operatoria y susceptible de contrastación. Las reducciones de diversidad taxonómica en el registro fósil, y la falta de registro de una o más especies, debidas a procesos de extinción biológica pueden ser distinguidas de las que se deben a otras causas como por ejemplo: las características del muestreo, los cambios en la conservación diferencial de los fósiles, la presencia de lagunas en el registro estratigráfico o las debidas a otros cambios paleobiológicos. El registro fósil contiene la información más relevante para formular hipótesis fundamentadas y contrastables respecto a los eventos de extinción biológica ocurridos en la biosfera durante la historia de la Tierra.

[EN] The fossil record is incomplete, biassed and it shows stratigraphical disorder. However, these features of the fossil record do not reduce the usefulness of the palaeontological data to identify and to interpret the successive extinction events. The information of the fossil record is the only one about the extinct taxa and their chronological order. The validity of the palaeontological data with respect to the available information in the fossil record, as well as the incompleteness and the bias of the fossil record with respect to the original palaeobiological information, are testable using independent criteria. The continuity of the fossil record, as well as the continuity of the stratigraphical record, are of operative nature and testable. The lack of evidence of one or several species in the fossil record, and the consequent reduction of taxonomic diversity, can be a result from processes of separate categories: sampling, differential preservation, stratigraphical gaps or palaeobiological changes. The fossil record contains the most relevant information to formulate testable hypothesis referring extinction events occurred during the history of the Earth.

Peer reviewed

Country
Spain
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Keywords

Tafonomía, Fossilization, Paleontology, Registro geológico, Geological record., 2416 Paleontología, Fosilización, Paleontología, Muestreo, Stratigraphical record, Registro estratigráfico, Geological record, Taphonomy, Pseudoextinction, 56.012, Pseudoextinción, Sampling

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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