Testing character evolution models in phylogenetic paleobiology : a case study with Cambrian echinoderms / April Wright, Peter J. Wagner, David F. Wright.

Format:

Book

Author/Creator:

Wright, April, author.

Wagner, Peter J., author.

Wright, David F., 1985- author.

Series:

Cambridge elements. Elements of paleontology, 2517-780X.

Cambridge elements. Elements of paleontology, 2517-780X

Language:

English

Subjects (All):

Echinodermata, Fossil.

Paleontology--Cambrian.

Paleontology.

Phylogeny.

Physical Description:

1 online resource (42 pages) : digital, PDF file(s).

Edition:

1st ed.

Place of Publication:

Cambridge : Cambridge University Press, 2021.

Summary:

Macroevolutionary inference has historically been treated as a two-step process, involving the inference of a tree, and then inference of a macroevolutionary model using that tree. Newer models blend the two steps. These methods make more complete use of fossils than the previous generation of Bayesian phylogenetic models. They also involve many more parameters than prior models, including parameters about which empiricists may have little intuition. In this Element, we set forth a framework for fitting complex, hierarchical models. The authors ultimately fit and use a joint tree and diversification model to estimate a dated phylogeny of the Cincta (Echinodermata), a morphologically distinct group of Cambrian echinoderms that lack the fivefold radial symmetry characteristic of extant members of the phylum. Although the phylogeny of cinctans remains poorly supported in places, this Element shows how models of character change and diversification contribute to understanding patterns of phylogenetic relatedness and testing macroevolutionary hypotheses.

Contents:

Cover

Title page

Copyright page

Testing Character Evolution Models in Phylogenetic Paleobiology

Contents

1 Introduction

2 Taxonomic Background and Data

2.1 Cincta: An Enigmatic Clade of Cambrian Echinoderms

2.2 Character Data

2.3 Chronostratigraphic Data

3 Methods

3.1 Estimating Starting Values for Sampling and Diversication Rates

3.2 Models

3.2.1 Morphological Evolution Models

3.2.2 Clock Models

3.2.3 Tree Models

4 Results

4.1 Model Fitting

4.2 Cinctan Phylogeny

5 Discussion

5.1 Model-Fitting for Complex Hierarchical Models

5.2 What Does the Chosen Set of Models Tell Us?

5.3 Cinctan Phylogeny: Implications for Systematics and Macroevolution

6 Conclusion

Appendix

References

Acknowledgments.

Notes:

Title from publisher's bibliographic system (viewed on 20 Jul 2021).

ISBN:

1-009-05872-X

1-009-05892-4

1-009-04901-1

OCLC:

1266905129