Evidence map›Paper›PMID 27465802›Full record

ArticleBMC evolutionary biology2016

Ontogeny reveals function and evolution of the hadrosaurid dinosaur dental battery.

Aaron R H LeBlanc, Robert R Reisz, David C Evans, Alida M Bailleul

Abstract read
In one paragraph

Article in BMC evolutionary biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

Who cites it

24 citing papers in PubMed.

  1. Article
  2. Review
  3. The pseudosuchian record in paleohistology: A small review.Anatomical record (Hoboken, N.J. : 2007) · 2025
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  8. Low dinosaur biodiversity in central China 2 million years prior to the end-Cretaceous mass extinction.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Aaron R H LeBlancDepartment of Biology, University of Toronto Mississauga, Mississauga, ON, L5L 1C6, Canada. aaron.leblanc@mail.utoronto.ca.
Robert R ReiszDepartment of Biology, University of Toronto Mississauga, Mississauga, ON, L5L 1C6, Canada.
David C EvansDepartment of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, ON, Canada.
Alida M BailleulDepartment of Pathology and Anatomical Sciences, Integrative Anatomy, University of Missouri, Columbia, MO, 65201, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHadrosaurid dinosaurs, dominant Late Cretaceous herbivores, possessed complex dental batteries with up to 300 teeth in each jaw ramus. Despite extensive interest in the adaptive significance of the dental battery, surprisingly little is known about how the battery evolved from the ancestral dinosaurian dentition, or how it functioned in the living organism. We undertook the first comprehensive, tissue-level study of dental ontogeny in hadrosaurids using several intact maxillary and dentary batteries and compared them to sections of other archosaurs and mammals. We used these comparisons to pinpoint shifts in the ancestral reptilian pattern of tooth ontogeny that allowed hadrosaurids to form complex dental batteries.

resultsComparisons of hadrosaurid dental ontogeny with that of other amniotes reveals that the ability to halt normal tooth replacement and functionalize the tooth root into the occlusal surface was key to the evolution of dental batteries. The retention of older generations of teeth was driven by acceleration in the timing and rate of dental tissue formation. The hadrosaurid dental battery is a highly modified form of the typical dinosaurian gomphosis with a unique tooth-to-tooth attachment that permitted constant and perfectly timed tooth eruption along the whole battery.

conclusionsWe demonstrate that each battery was a highly dynamic, integrated matrix of living replacement and, remarkably, dead grinding teeth connected by a network of ligaments that permitted fine scale flexibility within the battery. The hadrosaurid dental battery, the most complex in vertebrate evolution, conforms to a surprisingly simple evolutionary model in which ancestral reptilian tissue types were redeployed in a unique manner. The hadrosaurid dental battery thus allows us to follow in great detail the development and extended life history of a particularly complex food processing system, providing novel insights into how tooth development can be altered to produce complex dentitions, the likes of which do not exist in any living vertebrate.

Indexed as

Biological EvolutionAnimalsDinosaursFossilsOdontogenesisTooth

Identifiers

PMID27465802
PMCPMC4964017

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.