hystricognath

plural hystricognaths

1. biologyAny member of the infraorder Hystricognathi of rodents, distinguished from other rodents by the bone structure of their skulls.

   The New World hystricognath rodents (= caviomorphs) today represent one of the most diverse and widespread suborders among the over 800 mammal species of South America (Woods, 1982).

   1996, José Roberto Moreira, David W. Macdonald, “7: Capybara use and conservation in South America”, in V.J. Taylor, N. Dunstone, editors, Exploitation of Mammal Populations, page 89

   2 more examples

   The situation is similar with respect to rodents, given that the earliest undisputed hystricognaths are from the Oligocene of Pakistan and Egypt (ca. 35Ma), with the possibility of a Middle Eocene origin for the group (Bryant and McKenna 1995; Marivaux et al. 2002).

   2008, Felipe Bandoni de Oliveira, Eder Cassola Molina, Paul A. Garber, Gabriel Marroig, “Chapter 3: Paleogeography of the South Atlantic: a Route for Primates and Rodents into the New World?”, in Alejandro Estrada, Julio Cesar Bicca-Marques, Eckhard W. Heymann, Karen B. Strier, editors, South American Primates, page 63

   The hystricognaths include several lines that radiated in Africa and South America in the Oligocene and Miocene.[…]The largest hystricognath group is the Caviomorpha, the South American guinea pigs, capybaras, chinchillas and New World porcupines.

   2009, Michael J. Benton, Vertebrate Palaeontology, page 359