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Notosuchian

Notosuchia
Temporal range: Early CretaceousMiddle Miocene, 110–11 Ma
August 1, 2012 - Simosuchus on Display at the Royal Ontario Museum.jpg
Mounted skeleton of the notosuchian Simosuchus clarki in the Royal Ontario Museum
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Metasuchia
Suborder: Notosuchia
Gasparini, 1971
Families
Cladograms of Notosuchia
Ortega et al., 2000
Notosuchia 

Notosuchus




Libycosuchus




Baurusuchus




Iberosuchus




Sebecus




Itaborai crocodile



Bretesuchus








Pol, 2003
Notosuchia 

Uruguaysuchus




Simosuchus





Malawisuchus



Candidodon





Notosuchus




Comahuesuchus





Chimaerasuchus



Sphagesaurus



 Sebecosuchia 

Baurusuchus




Bretesuchus



Iberosuchus










Larsson and Sues, 2007
Metasuchia 
 Notosuchia

Notosuchus



Malawisuchus





Araripesuchus





Baurusuchus




Neosuchia


 Sebecia 

Pabwehshi



 Sebecidae 

Sebecus



Bretesuchus




Peirosauridae








   Taxa previously assigned to Notosuchia


Notosuchia is a suborder of primarily Gondwanan mesoeucrocodylian crocodylomorphs that lived during the Cretaceous. Fossils have been found from South America, Africa, Asia, and Europe. Notosuchia was a clade of terrestrial crocodilians that evolved a range of feeding behaviours, including herbivory (Chimaerasuchus), omnivory (Simosuchus), and terrestrial hypercarnivory (Baurusuchus). It included many members with highly derived traits unusual for crocodylomorphs, including mammal-like teeth, flexible bands of shield-like body armor similar to those of armadillos (Armadillosuchus), and possibly fleshy cheeks and pig-like snouts (Notosuchus). The suborder was first named in 1971 by Zulma Gasparini and has since undergone many phylogenetic revisions.

Notosuchians were generally small, with slender bodies and erect limbs. The most distinctive characteristics are usually seen in the skull. Notosuchian skulls are generally short and deep. While most are relatively narrow, some are very broad. Simosuchus has a broadened skull and jaw that resembles a pug, while Anatosuchus has a broad, flat snout like that of a duck.

The teeth vary greatly between different genera. Many have heterodont dentitions that vary in shape across the jaw. Often, there are large canine-like teeth protruding from the front of the mouth and broader molar-like teeth in the back. Some genera, such as Yacarerani and Pakasuchus, have extremely mammal-like teeth. Their molars are complex and multicuspid, and are able to occlude or fit with one another. Some forms such as Malawisuchus had jaw joints that enabled them to move the jaw back and forth in a shearing motion rather than just up and down.


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