Project 3994: Julia B. Desojo, M. Belén von Baczko, Oliver W. M. Rauhut. 2020. Anatomy, taxonomy and phylogenetic relationships of Prestosuchus chiniquensis (Archosauria: Pseudosuchia) from the original collection of von Huene, Middle-Late Triassic of southern Brazil. Palaeontologia electronica. 23 (1):1-55.
Specimen: † Prestosuchus chiniquensis Huene, 1938 (SNSB-BSPG :AS XXV)
View: Skeletal reconstruction

Abstract

A review of the type and referred material of von Huene shows that Prestosuchus is a valid taxon represented by, at least, three different species: the lectotype and paralectotype of Prestosuchus chiniquensis, an unnamed species from Brazil (UFRGS-PV-0152-T), the new combination Prestosuchus nyassicus (=Stagonosuchus nyassicus). Several more recently referred specimens are also included within the genus Prestosuchus based on the absence of a vertical crest dorsal to the supracetabular rim; dorsal margin of postacetabular part of ilium concave; marked angle between pubic peduncle/obturator plate and ischial shaft; and elongate posteromedial depression on the distal fibula, making it one of the best known rauisuchian taxa. The phylogenetic analysis recovered a monophyletic Prestosuchidae including Saurosuchus galilei, Luperosuchus fractus, Prestosuchus chiniquensis, Prestosuchus nyassicus, and several specimens referred to the genus Prestosuchus. This clade is supported by the presence of a ridge on the ventral process of the squamosal; anteroventral process of the squamosal perforates the lower temporal fenestra; palpebral bones extensively sutured to each other and to the lateral margin of the frontals; robust, knob-shaped attachment for the musculus iliofibularis on the fibula; and anterior portion of nasals elevated above the skull roof. The identification of this natural group evidenced a remarkable diversity and abundance of basal loricatans in the Middle-Late Triassic continental ecosystems of southern Gondwana.


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Article DOI: doi.org/10.26879/1026

Project DOI: 10.7934/P3994, http://dx.doi.org/10.7934/P3994
This project contains
  • 1 Media
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  • 2 Taxa
  • 1 Specimen
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MorphoBank Project 3994
  • Creation Date:
    27 April 2021
  • Publication Date:
    28 April 2021
  • Project views: 1576

    Authors' Institutions

    • Ludwig-Maximilians-Universitaet Muenchen

    • Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

    • Museo de La Plata

    • Bayerische Staatssammlung fuer Palaeontologie und Geologie



    Members

    member name taxa specimens media
    Oliver Rauhut
    Project Administrator
    211
    Julia Brenda Desojo
    Full membership
    000
    Belen von Baczko
    Full membership
    000


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