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Increasing control over biomineralization in conodont evolution

Author

Listed:
  • Bryan Shirley

    (Friedrich-Alexander-Universität Erlangen-Nürnberg
    Utrecht University)

  • Isabella Leonhard

    (University of Vienna
    University of Warsaw)

  • Duncan J. E. Murdock

    (Oxford University Museum of Natural History)

  • John Repetski

    (MS 926 A National Center)

  • Przemysław Świś

    (University of Warsaw
    University of Modena and Reggio Emilia)

  • Michel Bestmann

    (University of Vienna)

  • Pat Trimby

    (Oxford Instruments
    Carl Zeiss Ltd.)

  • Markus Ohl

    (Utrecht University)

  • Oliver Plümper

    (Utrecht University)

  • Helen E. King

    (Utrecht University)

  • Emilia Jarochowska

    (Utrecht University)

Abstract

Vertebrates use the phosphate mineral apatite in their skeletons, which allowed them to develop tissues such as enamel, characterized by an outstanding combination of hardness and elasticity. It has been hypothesized that the evolution of the earliest vertebrate skeletal tissues, found in the teeth of the extinct group of conodonts, was driven by adaptation to dental function. We test this hypothesis quantitatively and demonstrate that the crystallographic order increased throughout the early evolution of conodont teeth in parallel with morphological adaptation to food processing. With the c-axes of apatite crystals oriented perpendicular to the functional feeding surfaces, the strongest resistance to uniaxial compressional stress is conferred along the long axes of denticles. Our results support increasing control over biomineralization in the first skeletonized vertebrates and allow us to test models of functional morphology and material properties across conodont dental diversity.

Suggested Citation

  • Bryan Shirley & Isabella Leonhard & Duncan J. E. Murdock & John Repetski & Przemysław Świś & Michel Bestmann & Pat Trimby & Markus Ohl & Oliver Plümper & Helen E. King & Emilia Jarochowska, 2024. "Increasing control over biomineralization in conodont evolution," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-49526-0
    DOI: 10.1038/s41467-024-49526-0
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    References listed on IDEAS

    as
    1. Elia Beniash & Cayla A. Stifler & Chang-Yu Sun & Gang Seob Jung & Zhao Qin & Markus J. Buehler & Pupa U. P. A. Gilbert, 2019. "The hidden structure of human enamel," Nature Communications, Nature, vol. 10(1), pages 1-13, December.
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