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Biological versatility and earth history.

G J Vermeij

    Proceedings of the National Academy of Sciences of the United States of America
    |July 1, 1973
    PubMed
    Summary

    Evolutionary trends show increasing organismal complexity and form versatility over geological time. However, chemical versatility has generally decreased, favoring efficiency and metabolic ease.

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    Area of Science:

    • Evolutionary Biology
    • Paleontology
    • Developmental Biology

    Background:

    • Fossil record analysis reveals patterns in the evolution of life.
    • Understanding the drivers of morphological and chemical diversity is crucial.

    Purpose of the Study:

    • To investigate trends in potential versatility of form and chemical versatility throughout Earth's history.
    • To correlate these trends with evolutionary replacement and adaptive zone dynamics.

    Main Methods:

    • Analysis of fossil records across diverse plant and animal taxa.
    • Examination of morphogenetic parameters and chemical composition over geological time.

    Main Results:

    • A general increase in potential form versatility observed in younger fossil taxa.
    • Higher versatility taxa tend to replace less versatile groups in similar ecological niches.
    • A general decrease in chemical versatility observed from the Precambrian to the Phanerozoic.

    Conclusions:

    • Increased morphological potential diversity enhances homeostasis, efficiency, and adaptive zone size.
    • Decreased chemical versatility is linked to environmental changes and selection for metabolic efficiency.

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