dc.creatorBrandalise de Andrade, Marco
dc.creatorYoung, Mark T.
dc.creatorDesojo, Julia Brenda
dc.creatorBrusatte, Stephen L.
dc.date.accessioned2019-01-30T18:48:53Z
dc.date.accessioned2022-10-15T16:08:50Z
dc.date.available2019-01-30T18:48:53Z
dc.date.available2022-10-15T16:08:50Z
dc.date.created2019-01-30T18:48:53Z
dc.date.issued2010-09
dc.identifierBrandalise de Andrade, Marco; Young, Mark T.; Desojo, Julia Brenda; Brusatte, Stephen L.; The evolution of extreme hypercarnivory in metriorhynchidae (Mesoeucrocodylia: Thalattosuchia) based on evidence from microscopic denticle morphology; Society of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 30; 5; 9-2010; 1451-1465
dc.identifier0272-4634
dc.identifierhttp://hdl.handle.net/11336/69039
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4407119
dc.description.abstractMetriorhynchids were a peculiar group of fully marine Mesozoic crocodylomorphs. The derived genera Dakosaurus and Geosaurus exhibit a macroevolutionary trend towards extreme hypercarnivory, underpinned by a diverse array of craniodental adaptations, including denticulate serrated (ziphodont) dentition. A comparative analysis of serrations in Metriorhynchidae shows that known Dakosaurus species had conspicuous denticles, in contrast to the microscopic denticles of Geosaurus. A new tooth from the Nusplingen Plattenkalk of Germany provides evidence for a previously unknown large species of Geosaurus. Metriorhynchid specimens from the upper Kimmeridgian-lower Tithonian of Southern Germany show that ziphodont species of Dakosaurus and Geosaurus co-occurred in the Nusplingen and Solnhofen Seas. Although these genera are similarly denticulate, they diverge in overall crown morphology. Therefore, resource/niche partitioning via craniodental differentiation is posited as maintaining two contemporaneous genera of highly predatory metriorhynchids. Additionally, the new generic name Torvoneustes is proposed for "Geosaurus" carpenteri, the only known metriorhynchid with false-ziphodont dentition. A cladistic analysis shows that ziphodont dentition may have evolved independently in Dakosaurus and Geosaurus, or been acquired earlier by their common ancestor and secondarily lost in Torvoneustes and related taxa.
dc.languageeng
dc.publisherSociety of Vertebrate Paleontology
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/02724634.2010.501442
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/02724634.2010.501442
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectGeosaurus
dc.subjectDakosaurus
dc.subjectTorvoneustes
dc.subjectMetriorhynchidae
dc.subjectHypercarnivory
dc.subjectZiphodonty
dc.subjectGeosaurinae
dc.subjectJurassic
dc.titleThe evolution of extreme hypercarnivory in metriorhynchidae (Mesoeucrocodylia: Thalattosuchia) based on evidence from microscopic denticle morphology
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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