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Cited by 124Paleontology and Evolutionary BiologyEvolution and Paleontology StudiesComparative Animal Anatomy Studies

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Development of teeth and jaws in the earliest jawed vertebrates

Rücklin, Martin, Donoghue, Philip C. J., Johanson, Zerina, Trinajstic, Kate, Marone, Federica, Stampanoni, Marco·2012·Nature
DOI 10.1038/nature11555
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Abstract

Teeth and jaws constitute a model of the evolutionary developmental biology concept of modularity and they have been considered the key innovations underpinning a classic example of adaptive radiation. However, their evolutionary origins are much debated. Placoderms comprise an extinct sister clade or grade to the clade containing chondrichthyans and osteichthyans, and although they clearly possess jaws, previous studies have suggested that they lack teeth, that they possess convergently evolved tooth-like structures or that they possess true teeth. Here we use synchrotron radiation X-ray tomographic microscopy (SRXTM) of a developmental series of Compagopiscis croucheri (Arthrodira) to show that placoderm jaws are composed of distinct cartilages and gnathal ossifications in both jaws, and a dermal element in the lower jaw. The gnathal ossification is a composite of distinct teeth that developed in succession, polarized along three distinct vectors, comparable to tooth families. The teeth are composed of dentine and bone, and show a distinct pulp cavity that is infilled centripetally as development proceeds. This pattern is repeated in other placoderms, but differs from the structure and development of tooth-like structures in the postbranchial lamina and dermal skeleton of Compagopiscis and other placoderms. We interpret this evidence to indicate that Compagopiscis and other arthrodires possessed teeth, but that tooth and jaw development was not developmentally or structural…

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Research works printed but not linked: 29

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Metadata

Authors
Rücklin, M., Donoghue, P. C. J., Johanson, Z., Trinajstic, K., Marone, F., & Stampanoni, M.
Affiliations
  • University of Bristol (GB)
  • Natural History Museum (GB)
  • Curtin University (AU)
  • Paul Scherrer Institute (CH)
Corresponding author
  • Rücklin, Martin
  • Donoghue, Philip C. J.
ORCID
Venue
Nature
Publisher
Springer Science and Business Media LLC
Published
2012-10-17
Volume
491
Issue
7426
Pages
748-751
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
DOI
10.1038/nature11555
OpenAlex
W1995047221
Cited by
124
References
0
Citations by year
2026: 4 · 2025: 6 · 2024: 9 · 2023: 7 · 2022: 7 · 2021: 17 · 2020: 6 · 2019: 8 · 2018: 8 · 2017: 12 · 2016: 10 · 2015: 10 · 2014: 12 · 2013: 8
FWCI
7.10
Type
journal article
Language
en
Open access
closed
Licence
www.springer.com/tdm (tdm)
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • DORA PSI (Paul Scherrer Institute) (submittedVersion)
  • eSpace (Curtin University) (submittedVersion)
  • Bristol Research (University of Bristol) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
Funders
Natural Environment Research Council (NE/G020264/1, NE/G016623/1)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
  • Health Sciences › Medicine › Anatomy › Comparative Animal Anatomy Studies
Keywords
Arthrodira, tooth development, jaw development, dentin, pulp cavity, tooth replacement, modularity, dermal skeleton
MeSH terms
Animals, Australia, Biological Evolution, Fossils, Jaw, Microscopy, Phylogeny, Tomography, X-Ray, Tooth, Vertebrates, Synchrotrons

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