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Morfometría geométrica de la superficie oclusal de dientes de lirones (Gliridae, Rodentia, Mammalia): estudio preliminar, problemas y posibles aplicaciones

Authors: García Paredes, Israel;

Morfometría geométrica de la superficie oclusal de dientes de lirones (Gliridae, Rodentia, Mammalia): estudio preliminar, problemas y posibles aplicaciones

Abstract

[ES] Se presenta un trabajo preliminar para comprobar la aplicabilidad de la morfometría geométrica basada en la definición de landmarks para el estudio de la superficie oclusal de los dientes yugales de lirones o glíridos (Gliridae, Rodentia, Mammalia). Como ejemplo se analiza una muestra de M1 y M2 pertenecientes a la especie Armantomys jasperi DAAMS, 1990 en cuya superficie oclusal son definidos 22 landmarks. El diseño experimental realizado permite la identificación de landmarks y la comparación de los distintos especímenes mediante métodos de superposición. Un análisis de conglomerados jerárquicos muestra la adecuación del método planteado para agrupar M1 y M2. Se ha realizado además un análisis discriminante para ver el porcentaje de acierto en la predicción de cada grupo de molares superiores. Gracias a la exploración efectuada se ha identificado un ejemplar mal clasificado y, preliminarmente, la separación entre M1 y M2 es satisfactoria.

[EN] A preliminary work to test the landmark-based geometric morphometrics methods for the study of dental crown pattern of upper cheek teeth of glirids or dormouse (Gliridae, Rodentia, Mammalia) is presented. As an example, a sample of the fossil especies Armantomys jasperi DAAMS, 1990 M1 and M2 has been studied. There are 22 landmarks defined in its oclusal surface. The experimental design that allows the landmarks identification and the comparision of diferents specimens by superimposition methods has been done. A cluster analysis test the capacity of the refered method to distinguish between M1 and M2. A discriminant analysis give the percentage success in prediction in the two upper molars groups. This study allow a satisfactory separation of M1 and M2 and the identification of a mistake in one specimen.

El autor disfruta de una beca del MCYT adscrita al proyecto de investigación de la DGESEIC número PB98-0691-C03-02

Peer reviewed

Keywords

Análisis de conglomerados jerárquicos, Geometric morphometrics, Morfometría geométrica, Landmarks, Diseño experimental, Oclusal surface, Superficie oclusal, Rodentia, Dientes yugales superiores, Discriminant analysis, Análisis discriminante, Experimental design, Superimposition methods, Métodos de superposición, Cluster analysis, Mammalia, Gliridae, Upper cheek teeth

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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).
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impulse
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