Evolution of the new vertebrate head by co-option of an ancient chordate skeletal tissue

David Jandzik, Aaron T. Garnett, Tyler A. Square, Maria V. Cattell, Jr-Kai Yu and Daniel M. Medeiros ()
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David Jandzik: University of Colorado
Aaron T. Garnett: University of Colorado
Tyler A. Square: University of Colorado
Maria V. Cattell: University of Colorado
Jr-Kai Yu: Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan
Daniel M. Medeiros: University of Colorado

Nature, 2015, vol. 518, issue 7540, 534-537

Abstract: A tissue with many of the defining features of vertebrate cellular cartilage is shown to form transiently in larvae of the invertebrate chordate amphioxus, indicating that the origin of the vertebrate head skeleton depended not on evolution of a new skeletal tissue, as is commonly thought, but on the spread of this tissue throughout the head.

Date: 2015
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DOI: 10.1038/nature14000

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