Mahajangasuchidae

Mahajangasuchidae is an extinct family of notosuchian^[2][3] crocodyliforms. It currently contains two genera, Mahajangasuchus and Kaprosuchus, both of which lived during the Late Cretaceous in Gondwana. It is defined as the most inclusive clade containing Mahajangasuchus insignis but not Notosuchus terrestris, Simosuchus clarki, Araripesuchus gomesii, Baurusuchus pachecoi, Peirosaurus torminni, Goniopholis crassidens, Pholidosaurus schaumbergensis, or Crocodylus niloticus.^[1] Phylogenetically, Mahajangasuchidae is placed just outside pholidosaurids and more derived neosuchians.^[3]

Mahajangasuchidae Temporal range: 95–66 Ma PreꞒ Ꞓ O S D C P T J K Pg N Cenomanian - Maastrichtian
Mahajangasuchus insignis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Clade:	Pseudosuchia
Clade:	Crocodylomorpha
Clade:	Metasuchia
Family:	†Mahajangasuchidae Sereno and Larsson, 2009[1]
Genera
†Kaprosuchus †Mahajangasuchus (type)

Defining characters of the family include fused nasals, a jaw articulation below the posterior maxillary tooth row, a deep mandibular symphysis that is oriented anterodorsally, and the formation of a hornlike posterodorsal process from the squamosal and parietal (which is much more pronounced in Kaprosuchus).

Phylogeny

Skull of Kaprosuchus saharicus

Cladogram showing the phylogenetic relationship of Mahajangasuchidae within Neosuchia after Sereno and Larsson, 2009:^[1]

Neosuchia	Sebecia unnamed Mahajangasuchidae Mahajangasuchus Kaprosuchus unnamed Pholidosauridae unnamed Laganosuchus unnamed Bernissartia unnamed Isisfordia Crocodylia

In 2014, Mahajangasuchidae were grouped within Notosuchia:^[2]

Notosuchia

Uruguaysuchidae Araripesuchus tsangatsangana Anatosuchus Araripesuchus wegeneri Araripesuchus buitreraensis Araripesuchus gomesii Araripesuchus patagonicus Uruguaysuchus Stolokrosuchus Mahajangasuchidae Kaprosuchus Mahajangasuchus Peirosauridae Hamadasuchus Gasparinisuchus Lomasuchus Montealtosuchus Uberabasuchus Candidodon Ziphosuchia Libycosuchus Simosuchus Malawisuchus Pakasuchus Morrinhosuchus Notosuchus Coringasuchus Labidiosuchus Mariliasuchus Sphagesauridae Adamantinasuchus Yacarerani Caipirasuchus stenognathus Caipirasuchus paulistanus Caipirasuchus montealtensis Sphagesaurus Armadillosuchus Caryonosuchus Chimaerasuchus Comahuesuchus Sebecosuchia Pabwehshi Baurusuchidae Cynodontosuchus Pissarrachampsa Stratiotosuchus Campinasuchus Baurusuchus albertoi Baurusuchus pachecoi Baurusuchus salgadoensis Bergisuchus Iberosuchus Sebecidae Lorosuchus Pehuenchesuchus Barinasuchus Ayllusuchus Bretesuchus Lumbrera form Langstonia Sebecus Zulmasuchus

The cladogram following by Nicholl et al. 2021:^[3]

Notosuchia

Uruguaysuchidae Araripesuchus tsangatsangana Anatosuchus Araripesuchus wegeneri Araripesuchus buitreraensis Araripesuchus gomesii Araripesuchus patagonicus Uruguaysuchus Mahajangasuchidae Kaprosuchus Mahajangasuchus Peirosauridae Stolokrosuchus Bayomesasuchus Hamadasuchus Antaeusuchus Miadanasuchus Barrosasuchus Gasparinisuchus Rukwasuchus Uberabasuchus Lomasuchus Montealtosuchus Candidodon Ziphosuchia Libycosuchus Simosuchus Neuquensuchus Pakasuchus Malawisuchus Xenodontosuchia Sphagesauria Morrinhosuchus Llanosuchus Notosuchus Labidiosuchus Mariliasuchus Sphagesauridae Adamantinasuchus Yacarerani Caipirasuchus Sphagesaurus Caryonosuchus Armadillosuchus Chimaerasuchus Comahuesuchus Razanandrongobe Sebecosuchia Baurusuchidae Cynodontosuchus Pissarrachampsa Campinasuchus Stratiosuchus Baurusuchus Bergisuchus Iberosuchus Sebecidae Ayllusuchus Bretesuchus Barinasuchus Ogresuchus Sebecus

See also

• Sebecosuchia - another group of terrestrial crocodylomorphs.