Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
Paleobiology Email Content Delivery
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Paleobiology; February 2008; v. 34; no. 1; p. 46-64; DOI: 10.1666/06052.1
© 2008 Paleontological Society
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Web of Science (2)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Lazzari, V.
Right arrow Articles by Michaux, J.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Topographic maps applied to comparative molar morphology: the case of murine and cricetine dental plans (Rodentia, Muroidea)

Vincent Lazzari1, Paul Tafforeau2, Jean-Pierre Aguilar1 and Jacques Michaux3

1 Vincent Lazzari and Jean Pierre Aguilar. UMR CNRS 5554, Institut des Sciences de l'Evolution, BP064, Université de Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France. lazzari{at}isem.univ-montp2.fr
2 Paul Tafforeau. European Synchrotron Radiation Facility, BP220, 6 rue Jules Horowitz, 38043 Grenoble Cedex, France. tafforea{at}esrf.fr
3 Jacques Michaux. UMR CNRS 5554, Institut des Sciences de l'Evolution, BP 064, Ecole Pratique des Hautes Etudes, Université Montpellier II , Place Eugène Bataillon, 34095 Montpellier cedex 5, France. michaux{at}isem.univ-montp2.fr

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.




This article has been cited by other articles:


Home page
 PALAIOSHome page
L. HAUTIER, J. CLAVEL, V. LAZZARI, H. G. RODRIGUES, and M. VIANEY-LIAUD
BIOMECHANICAL CHANGES AND REMODELING OF THE MASTICATORY APPARATUS DURING MAMMALIAN EVOLUTION: THE CASE OF THE ISSIODOROMYINAE (RODENTIA)
Palaios, January 1, 2010; 25(1): 6 - 13.
[Abstract] [Full Text] [PDF]

Home page
 Proc. Natl. Acad. Sci. USAHome page
C. Charles, V. Lazzari, P. Tafforeau, T. Schimmang, M. Tekin, O. Klein, and L. Viriot
Modulation of Fgf3 dosage in mouse and men mirrors evolution of mammalian dentition
PNAS, December 29, 2009; 106(52): 22364 - 22368.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2010 by Paleontological Society