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Redescription of the cranial morphology of Mariliasuchus amarali, and its phylogenetic affinities (Crocodyliformes, Notosuchia) ; American Museum Novitates : no. 3512

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dc.contributor.author Zaher, Hussam
dc.contributor.author Pol, Diego
dc.contributor.author Carvalho, Alberto B.
dc.contributor.author Riccomini, Claudio
dc.contributor.author Campos, Diógenes de Almeida
dc.contributor.author Nava, William
dc.date.accessioned 2006-05-22T15:56:57Z
dc.date.available 2006-05-22T15:56:57Z
dc.date.issued 2006
dc.identifier.uri http://hdl.handle.net/2246/5789
dc.description Includes bibliographical references (p. 26-28). en
dc.description 40 p. : ill., map ; 26 cm. en
dc.description.abstract The cranial morphology of Mariliasuchus amarali, a poorly known notosuchian from the late Cretaceous of southeastern Brazil, is redescribed based on new material. Its phylogenetic affinities within Crocodylomorpha are evaluated through a parsimony analysis involving 46 taxa and 198 characters. Mariliasuchus is nested well inside the clade Notosuchia, as the sister group of Comahuesuchus, a derived notosuchian from the late Cretaceous of Argentina. Both taxa share the following unambiguous synapomorphies: ventral half of the lacrimal tapering posteroventrally, not contacting or only slightly contacting the jugal; presence of a large foramen on the lateral surface of the anterior part of the jugal; presence of procumbent premaxillary and anterior dentary alveoli; and ectopterygoids that do not participate of the palatine bar. The presence of procumbent premaxillary teeth, specialized tooth crown morphology, and fore-aft jaw movements suggests that this group presented complex jaw movements related to specialized feeding habits. en
dc.format.extent 2594695 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher New York, NY : American Museum of Natural History en
dc.relation.ispartofseries American Museum novitates ; no. 3512 en
dc.subject.lcc QL1 .A436 no.3512 2006 en
dc.subject.lcsh Mariliasuchus amarali. en
dc.subject.lcsh Skull -- Anatomy. en
dc.subject.lcsh Crocodilians, Fossil -- Brazil -- São Paulo (State) en
dc.subject.lcsh Reptiles, Fossil -- Brazil -- São Paulo (State) en
dc.subject.lcsh Crocodilians -- Phylogeny. en
dc.subject.lcsh Paleontology -- Cretaceous -- Brazil -- São Paulo (State) en
dc.subject.lcsh Paleontology -- Brazil -- São Paulo (State) en
dc.title Redescription of the cranial morphology of Mariliasuchus amarali, and its phylogenetic affinities (Crocodyliformes, Notosuchia) ; American Museum Novitates : no. 3512 en
dc.title.alternative Cranial morphology of Mariliasuchus amarali en
dc.type text en


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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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