Hystricomorpha

Porcupine ( Hystrix cristata )

The porcupine relatives ( Hystricomorpha ) are a suborder of rodents ( Rodentia ).

The morphological criteria for this submission are largely based on the construction of the lower jaw and skull, especially the zygomatic bone. A further differentiation was made ​​to allow the mandrel tail squirrel relatives who were formerly also sometimes included as well, are now classified as a separate submission by molecular genetic studies.

This suborder includes nearly 300 species, most of which are common in the Americas.

System

• Incertae sedis family: Laotian rock rat ( Diatomyidae )
• Comb -like fingers ( Ctenodactylomorphi or Sciuravida ) Comb fingers or Gundis ( Ctenodactylidae )

• Porcupines ( Hystricidae )
• Partial order Phiomorpha Sand burial ( Bathyergidae )
• Dassie ( Petromuridae )
• Cane rats ( Thryonomyidae )

• Porcupines ( Erethizontidae )
• Chinchillas ( Chinchillidae )
• Pacarana ( Dinomyidae )
• Guinea pigs ( Caviidae )
• Agoutis and Acouchis ( Dasyproctidae )
• Pacas ( Cuniculidae )
• Comb rats ( Ctenomyidae )
• Mirage rats ( Octodontidae )
• Chinchilla rats ( Abrocomidae )
• Sting rats ( Echimyidae )
• Coypu ( Myocastoridae )
• Tree rats ( Capromyidae )
• Riesenhutias ( Heptaxodontidae ) †

The lineage relationships come according to Adkins et al. expressed in the following diagram:

Porcupines

Phiomorpha

Guinea Pig Related

? Laotian rock rat

Comb fingers