page_title: Prestosuchus
section_title: Porto Alegre specimens
hierarchical_section_title: Prestosuchus / History of study / Porto Alegre specimens
caption_attribution_description: Tecodonte no museu da UFRGS English: Karamuru skull, petrified wood , and child
context_page_description: Prestosuchus is an extinct genus of pseudosuchian in the group Loricata, which also includes Saurosuchus and Postosuchus. It has historically been referred to as a "rauisuchian" and was the defining member of the family Prestosuchidae, though the validity of both of these groups is questionable: Rauisuchia is now considered paraphyletic and Prestosuchidae is polyphyletic in its widest form.
context_section_description: Four specimens are stored at the Universidade Federal do Rio Grande do Sul (UFRGS) in Porto Alegre. The first to be described was UFRGS-PV-0156-T, a massive and well-preserved skull discovered along with most of a vertebral column at the Pascual Sanga outcrop in Candelária. It was originally described by Barberena (1978) and has experienced much discussion as to its relations to the original Munich specimens. A more complete partial skeleton from Vale Verde, UFRGS-PV-0152-T, was studied by Nesbitt (2011) along with the Munich lectotype and UFRGS-PV-0156-T. It is anatomically similar to the latter specimen but has yet to be fully described.
  The most complete UFRGS specimen is UFRGS-PV-0629-T, a partial skeleton from Dona Francisca which was originally described in a thesis by Mastrantonio (2010). This specimen has been the subject of skull and braincase descriptions, as well as hip muscle reconstructions. The least complete UFRGS specimen is UFRGS-PV-0473-T, an isolated braincase which may be from the “Posto de Gasolina” outcrop in Dona Francisca. Porto Alegre has one additional Prestosuchus specimen unaffiliated with the UFRGS: MCP-146, a portion of the hip area stored at the Museu de Ciências e Tecnologia of Pontífícia Universidade do Rio Grande do Sul.
caption: A skull model of "Karamuru vorax" (a nomen nudum involving Prestosuchus fossils), based on the skull of specimen UFRGS-PV-0156-T
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