The phylogenetic relationship of the notosuchians Mariliasuchus amarali (Campanian; Bauru Group) and Notosuchus terrestris (Santonian; Neuquén Group) is revised. Morpho-anatomical evaluation of Mariliasuchus in the current bibliography indicate close relationship with Notosuchus, while cladistic analysis either related Mariliasuchus to Candidodon itapecuruense (Albian/eo-Cenomanian; São Luis-Grajaú Basin), as part of the phylotaxon Candidodontidae, or to Comahuesuchus brachybuccalis (Santonian; Neuquén Group). Comparative study of specimens shows similarities on the palate, choanae, dentition, retroarticular process, and other structures from Mariliasuchus and Notosuchus, supporting the original classification as a Notosuchidae. Preliminary phylogenetic analysis sets these taxa as sister-groups. Reevaluation of a previously published phylogenetic analysis from other authors provides further support for the Mariliasuchus+Notosuchus clade. The current work indicates that Mariliasuchus is a Notosuchidae, refuting its allocation as a Candidodontidae. The influence of character construction and the definition of Notosuchia are discussed.
|Translated title of the contribution||Morphological and anatomical observations about Mariliasuchus amarali and Notosuchus terrestris (Mesoeucrocodylia), and their phylogenetical relationships with other South American notosuchians|
|Pages (from-to)||5 - 62|
|Number of pages||57|
|Journal||Arquivos do Museu Nacional|
|Publication status||Published - Aug 2008|
Bibliographical notePublisher: Museu Nacional/Universidade Federal do Rio de Janeiro
Andrade, M. B. D., & Bertini, RJ. (2008). Morphological and anatomical observations about Mariliasuchus amarali and Notosuchus terrestris (Mesoeucrocodylia), and their phylogenetical relationships with other South American notosuchians. Arquivos do Museu Nacional, 66(1), 5 - 62. http://www.museunacional.ufrj.br/CP/Arquivos/Arq.2008/Arq.66-1/01%20Andrade%20&%20Bertini%2019%20set.pdf