Simosuchus has a broadened skull and jaw that resembles a pug, while Anatosuchus has a broad, flat snout like that of a duck.

Recent research found Araripesuchus wegeneri, Armadillosuchus arrudai, Baurusuchus, Iberosuchus macrodon, and Stratiotosuchus maxhechti were ectothermic organisms[6] The evolutionary interrelationships of Notosuchia are in flux, but the following genera are generally considered notosuchians: Cynodontosuchus Notosuchus Libycosuchus Baurusuchus Iberosuchus Sebecus Itaborai crocodile Bretesuchus Uruguaysuchus Simosuchus Malawisuchus Candidodon Notosuchus Comahuesuchus Chimaerasuchus Sphagesaurus Baurusuchus Bretesuchus Iberosuchus Notosuchus Malawisuchus Araripesuchus Baurusuchus Neosuchia Pabwehshi Sebecus Bretesuchus Peirosauridae The clade Notosuchia has undergone many recent phylogenetic revisions.

In 2000, Notosuchia was proposed to be one of two groups within the clade Ziphosuchia, the other being Sebecosuchia, which included deep snouted forms such as baurusuchids and sebecids.

[8] More recently, a phylogenetic analysis by Larsson and Sues (2007) resulted in the naming of a new clade, Sebecia, to include sebecids and peirosaurids.

It is based mainly on the data matrix published by Pol et al. (2012) which is itself a modified version of previous analyses.

[10] Araripesuchus tsangatsangana Anatosuchus Araripesuchus wegeneri Araripesuchus buitreraensis Araripesuchus gomesii Araripesuchus patagonicus Uruguaysuchus Stolokrosuchus Kaprosuchus Mahajangasuchus Hamadasuchus Gasparinisuchus Lomasuchus Montealtosuchus Uberabasuchus Candidodon Libycosuchus Simosuchus Malawisuchus Pakasuchus Morrinhosuchus Notosuchus Coringasuchus Labidiosuchus Mariliasuchus Adamantinasuchus Yacarerani Caipirasuchus stenognathus Caipirasuchus paulistanus Caipirasuchus montealtensis Sphagesaurus Armadillosuchus Caryonosuchus Chimaerasuchus Comahuesuchus Pabwehshi Cynodontosuchus Pissarrachampsa Stratiotosuchus Campinasuchus Baurusuchus albertoi Baurusuchus pachecoi Baurusuchus salgadoensis Bergisuchus Iberosuchus Lorosuchus Pehuenchesuchus Barinasuchus Ayllusuchus Bretesuchus Lumbrera form Langstonia Sebecus Zulmasuchus This cladogram represents the results of the most comprehensive analysis of notosuchian relationships to date, performed in the description of Antaeusuchus taouzensis by Nicholl et al. 2021.