Topographic maps applied to comparative molar morphology: the case of murine and cricetine dental plans (Rodentia, Muroidea)
| Autor: | Jean-Pierre Aguilar, Paul Tafforeau, Vincent Lazzari, Jacques Michaux |
|---|---|
| Přispěvatelé: | Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UR226, European Synchrotron Radiation Facility (ESRF), Université Paris sciences et lettres (PSL), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2008 |
| Předmět: |
0106 biological sciences
Molar 010506 paleontology PHYLOGENY [SDE.BE.PAL]Environmental Sciences/Biodiversity and Ecology/domain_sde.be.pal Evolutionary change Morphology (biology) 010603 evolutionary biology 01 natural sciences CHARACTERS stomatognathic system Muroidea Axis elongation Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Ecology biology Orientation (computer vision) LINEAGES Paleontology Anatomy biology.organism_classification stomatognathic diseases WEAR Contour line PATTERNS Cusp (anatomy) [SDE.BE]Environmental Sciences/Biodiversity and Ecology General Agricultural and Biological Sciences Cartography Geology MIOCENE |
| Zdroj: | Paleobiology Paleobiology, Paleontological Society, 2008, 34 (1), pp.46-64. ⟨10.1666/06052.1⟩ Paleobiology, Paleontological Society, 2008, 34 (1), pp.46-64 |
| ISSN: | 1938-5331 0094-8373 |
| DOI: | 10.1666/06052.1 |
| Popis: | International audience; We developed a new method to generate topographic maps of tooth crowns from X-ray synchrotron microtomographic data. Maps are drawn after cervix-plane orientation of tooth image stacks, without the need for a geographic information system. Classical topographic maps with contour lines are complemented by slope maps and angularity maps. Cartography allows precise comparisons of cusps morphologies, and quantification of the directions of cusp axis elongation and slope. Application of this method to muroid rodents with cricetine and murine dental patterns reveals clear-cut differences in cusps morphology that are indicative of the direction of the chewing movement, in agreement with wear facet analyses. Rodents with a murine dental pattern were derived from ancestors with a cricetine pattern, and their origin is associated with important changes in cusp morphology and organization. In order to understand such evolutionary change, our investigation is applied to a sample of extant and fossil muroid rodents that are characterized by either a murine dental plan or a cricetine one, or a dental pattern intermediate between those of cricetines and murines. |
| Databáze: | OpenAIRE |
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