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Fossils, Carbon Dating and Fossil Record
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Developmental bias, macroevolution, and the fossil record.

David Jablonski1

  • 1Department of Geophysical Sciences, University of Chicago, Chicago, Illinois.

Evolution & Development
|September 12, 2019
PubMed
Summary
This summary is machine-generated.

Developmental bias influences evolutionary patterns by affecting variation accessible to species. Integrating developmental data with fossil records can predict macroevolutionary trends and understand clade dynamics.

Keywords:
disparitymacroevolutionpaleobiology

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Area of Science:

  • Evolutionary Biology
  • Developmental Biology
  • Paleontology

Background:

  • Understanding large-scale evolutionary patterns requires integrating developmental bias with clade dynamics.
  • Developmental bias refers to the probability distribution of variation accessible to an ancestral phenotype.
  • Clade dynamics involve the differential survival and production of species and evolutionary lineages.

Purpose of the Study:

  • To synthesize developmental data and paleontological data for a comprehensive understanding of evolutionary patterns.
  • To explore the predictive power of developmental bias on macroevolutionary trends in the fossil record.
  • To investigate how macroevolutionary patterns can inform our understanding of developmental bias.

Main Methods:

  • Two-way exchange between neontological (developmental) and paleontological (phenotypic, historical) data.
  • Analyses in multivariate morphospaces, coupled with phylogeny, theoretical and developmental models, and diversity-disparity plots.
  • Assessing the heritability of ancestral bias across phylogeny and changes in bias over evolutionary time.

Main Results:

  • Developmental bias significantly shapes macroevolutionary patterns.
  • Integrating developmental and paleontological data provides a powerful framework for evolutionary studies.
  • Multivariate morphospace analyses coupled with phylogenetic and theoretical models are effective.

Conclusions:

  • A comprehensive research program integrating developmental bias and clade dynamics is crucial for understanding evolutionary macropatterns.
  • General rules governing the macroevolutionary effects of developmental bias can be established.
  • Developmental bias interacts with other intrinsic and extrinsic factors influencing clade dynamics in morphospace.