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Classifying echinoid skeleton models: testing ideas about growth and form

Published online by Cambridge University Press:  08 April 2016

Maria Abou Chakra
Affiliation:
McMaster University, Department of Biology, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada. E-mail: abouchm@mcmaster.ca
Jon Rich Stone*
Affiliation:
McMaster University, Department of Biology and Origins Institute, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada. E-mail: jstoner@mcmaster.ca
*
∗Corresponding author

Abstract

Theoretical morphology is the scientific field in which researchers model organism growth and form. The field is developed well in studies on skeletons, especially shells. Researchers have contributed echinoid skeleton models to the field, but these have yet to be recognized collectively. We present herein the first comprehensive review for echinoid skeleton models in theoretical morphology. We apply a phylogenetic systematic analysis to those models, use the resulting consensus cladogram to classify and interrelate the models in an analogy in which they are likened to fossil specimens in a biostratigraphic record, and utilize the biostratigraphic metaphor to define trends within theoretical morphology as it applies to echinoid skeleton models.

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Articles
Copyright
Copyright © The Paleontological Society 

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