文章基本信息

标题：Relationships between dimensionless models of ammonoid shell morphology
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作者：HORACIO PARENT ; MATÍAS BEJAS ; ANDRÉS GRECO 等
期刊名称：Acta Palaeontologica Polonica
印刷版ISSN：0567-7920
电子版ISSN：1732-2421
出版年度：2012
卷号：57
期号：2
页码：445-447
DOI：10.4202/app.2010.0118
语种：English
出版社：Institute of Paleobiology PAS
摘要：In morphological studies the shape may be conveniently quan tified by relative dimensions or dimensionless quantities. The analyses of shell morphology and morphospace occupation have been historically approachedmainly bymeans of statistical analysis on classical dimensions (distance measurements: diameter, umbilical width, whorl width, whorl height and apertural whorl height), the Raup’s coiling and expansion rate parameters and, more recently, by means of the ADA-model which conjugates the classical variables in a single simple equation. Relationships between these studies should be possible based on mathematical equivalences between classical dimensions and those of coiling and expansion rates. These equivalences, which are presented in this paper, have been obtained on the basis of the ADA-model and a new general method for deriving dimensionless models of morphology based on exponential trajectories as a function of a rotational angle.
关键词：Ammonoid shell;morphology;size;shape;morphospace