000095684 001__ 95684
000095684 005__ 20201023165833.0
000095684 0247_ $$2doi$$a10.1111/let.12139
000095684 0248_ $$2sideral$$a120097
000095684 037__ $$aART-2016-120097
000095684 041__ $$aeng
000095684 100__ $$0(orcid)0000-0001-6138-7227$$aDeMiguel, Daniel$$uUniversidad de Zaragoza
000095684 245__ $$aThe interplay between increased tooth crown-height and chewing efficiency, and implications for Cervidae evolution
000095684 260__ $$c2016
000095684 5060_ $$aAccess copy available to the general public$$fUnrestricted
000095684 5203_ $$aMammals of numerous lineages have evolved high‐crowned (hypsodont) teeth particularly during the last 20 million years. This major phenotypic change is one of the most widely studied evolutionary phenomena in a broad range of disciplines, though the mechanisms underlying its transformation remain unresolved. Here, we present the first Finite Element Analysis (FEA) to investigate the alternative hypothesis that there is a biomechanical link between increased hypsodonty and a more effective mastication in deer. Our FE experiments compared patterns of stress and strain within and between different fossil and living species under different loading conditions, and found that more hypsodont teeth are suited for restricting stresses to those areas where chewing loading occurs. This mechanical improvement is consequence of specific and pronounced variations in tooth geometry and morphology of the occlusal surface that are strongly related to crown growth in the vertical plane. We demonstrate that hypsodonty enables selenodont‐teeth to adopt a mechanically improved design that increases the pressure whilst shearing foods. As ruminants are physiologically limited by both the quantity of food consumed and the time spent in the mastication and digestion, hypsodonty is highly advantageous when feeding on mechanically resistant, tough and fibrous foods. Consequently, it allows grass‐eaters to spend less time chewing, thereby increasing the volume of food ingested and/or providing more time for digestion. This study provides a promising line of evidences in support of biomechanical effectiveness, in addition to or instead of increased wear resistance, as a factor in explaining the evolutionary origins of the hypsodont phenotype.
000095684 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E05$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2010-19116-BOS$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2010-216723$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2011-25754$$9info:eu-repo/grantAgreement/ES/MINECO/JCI-2011-11697
000095684 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000095684 590__ $$a2.281$$b2016
000095684 591__ $$aPALEONTOLOGY$$b7 / 53 = 0.132$$c2016$$dQ1$$eT1
000095684 592__ $$a0.836$$b2016
000095684 593__ $$aPaleontology$$c2016$$dQ1
000095684 593__ $$aEcology, Evolution, Behavior and Systematics$$c2016$$dQ2
000095684 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000095684 700__ $$0(orcid)0000-0003-2487-547X$$aAzanza, Beatriz$$uUniversidad de Zaragoza
000095684 700__ $$0(orcid)0000-0002-2967-6747$$aCegoñino, José$$uUniversidad de Zaragoza
000095684 700__ $$0(orcid)0000-0001-8975-5239$$aRuiz, Inmaculada$$uUniversidad de Zaragoza
000095684 700__ $$aMorales, Jorge
000095684 7102_ $$12000$$2655$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Paleontología
000095684 7102_ $$15004$$2605$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Mec.Med.Cont. y Teor.Est.
000095684 773__ $$g49, 1 (2016), 117-129$$pLethaia$$tLethaia$$x0024-1164
000095684 8564_ $$s4420920$$uhttps://zaguan.unizar.es/record/95684/files/texto_completo.pdf$$yPostprint
000095684 8564_ $$s185767$$uhttps://zaguan.unizar.es/record/95684/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000095684 909CO $$ooai:zaguan.unizar.es:95684$$particulos$$pdriver
000095684 951__ $$a2020-10-23-16:55:01
000095684 980__ $$aARTICLE