Marginal dentition and multiple dermal jawbones as the ancestral condition of jawed vertebrates

Author:

Vaškaninová Valéria12ORCID,Chen Donglei1ORCID,Tafforeau Paul3ORCID,Johanson Zerina4ORCID,Ekrt Boris5,Blom Henning1ORCID,Ahlberg Per Erik1ORCID

Affiliation:

1. Department of Organismal Biology, Uppsala University, Norbyvägen 18A, SE-752 36, Uppsala, Sweden.

2. Institute of Geology and Palaeontology, Faculty of Science, Charles University, Albertov 6, Prague, 12843, Czech Republic.

3. European Synchrotron Radiation Facility, 71 avenue des Martyrs, 38043 Grenoble, France.

4. Department of Earth Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK.

5. Department of Palaeontology, National Museum, Václavské náměstí 68, Prague, 11579, Czech Republic.

Abstract

Teeth and jaws The first vertebrates were jawless, much like a modern hagfish. There has been a lot of interest in how these forms transitioned to having jaws like most of their descendants, including humans. Much of our understanding of this process has focused on how the teeth are replaced relative to the jaw. Previous theories suggested that tooth growth that occurred lingually—or from inside out as in modern fishes—was a derived condition. Vaškaninová et al. vertebrates, suggesting that it may have been ancestral. Science , this issue p. 211

Funder

Center for Geosphere Dynamics

Ministry of Culture of the Czech Republic

Wallenberg Scholarship from the Knut and Alice Wallenberg Fundation

MŠMT

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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