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Sub-set of rodents in South America
Caviomorpha is the rodent parvorder that unites all New World hystricognaths. It is supported by both fossil and molecular evidence. The Caviomorpha was
Caviomorpha
Rodent genus
chinchilla and Chinchilla lanigera) of crepuscular rodents of the parvorder Caviomorpha, native to the Andes Mountains in South America. They live in colonies
Chinchilla
Species of rodent
sole extant member of the rodent family Dinomyidae in the infraorder Caviomorpha; the paca that it resembles in appearance is in a different Caviomorph
Pacarana
Species of rodent
commonly, just the common degu. Common degus belong to the parvorder Caviomorpha of the infraorder Hystricognathi, along with the chinchilla and guinea
Common_degu
Infraorder of rodents
Hystricognathi are divided into two parvorders, the Phiomorpha and the Caviomorpha. The Caviomorpha are mostly native to South America, with a few species in the
Hystricognathi
Rodent with a coat of sharp spines
(Thecurus) pumilis Long-tailed porcupine, Trichys fasciculata Parvorder Caviomorpha Family Erethizontidae: New World porcupines North American porcupine
Porcupine
Suborder of rodents
paraphyletic group. The hystricomorph rodents, or at least members of Caviomorpha, are sometimes not regarded as rodents. Most molecular and genetic research
Hystricomorpha
Family of rodents
Gonzales, Lauren A. (2026). "New Early Miocene hystricognath rodents (Caviomorpha) from the Madre de Dios River in the southeastern Peruvian Amazon". Papers
New_World_porcupine
Family of rodents
Josephoartigasia monesi sp. nov. (family: Dinomyidae; Rodentia: Hystricognathi: Caviomorpha) Francis, J.C. and A. Mones (1966). "Artigasia magna n. g., n. sp. (Eumegamyinae)
Dinomyidae
Species of rodent
and associated behaviour in the mara, Dolichotis patagonum (Rodentia: Caviomorpha)". Journal of Zoology. 203: 298–301. Rood. J. P. (1972). "Ecological
Patagonian_mara
Animals in mammal order Rodentia
(pocket mice): 2 genera, 27 species Suborder Hystricomorpha Parvorder Caviomorpha Superfamily Cavioidea Family Caviidae (cavies) Subfamily Caviinae (guinea
List_of_rodents
Genus of rodents
Candela, A.M.; Bonini, R.A. (July 2017). "A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: implications for the origin of the genus
Cavia
Largest species of rodents
scent marking among Capybaras (Hydrochaeris hypdrochaeris) (Rodentia: Caviomorpha)". Journal of Zoology. 202 (3): 341–360. doi:10.1111/j.1469-7998.1984
Capybara
Extinct genus of rodents
M. (2011). "New genus of giant Dinomyidae (Rodentia: Hystricognathi: Caviomorpha) from the late Miocene of Uruguay". Journal of Mammalogy. 92 (1): 170
Josephoartigasia
Family of rodents
; Gonzales, L. A. (2026). "New Early Miocene hystricognath rodents (Caviomorpha) from the Madre de Dios River in the southeastern Peruvian Amazon". Papers
Chinchillidae
Family of mammals (fossil)
MacPhee, R. D. E. (1993): Body size in Amblyrhiza inundata (Rodentia: Caviomorpha), an extinct megafaunal rodent from the Anguilla Bank, West Indies: estimates
Heptaxodontidae
Species in mammal family Erethizontidae
Erethizontidae is a family of mammals in the order Rodentia and part of the Caviomorpha parvorder. Members of this family are called erethizontids or New World
List_of_erethizontids
Genus of mammals
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Dasyprocta (Agoutis) Azara's agouti (Dasyprocta azarae) Coiban agouti
Agouti
Species in mammal family Caviidae
Caviidae is a family of mammals in the order Rodentia and part of the Caviomorpha parvorder. Members of this family are called caviids and include guinea
List_of_caviids
Genus of rodents
Bidau, Claudio J. (2007). "Subterranean Rodents of the Genus Ctenomys (Caviomorpha: Ctenomyidae) Follow the Converse to Bergmann's Rule". Journal of Biogeography
Tuco-tuco
Genus of rodents resembling guinea pigs
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Cane_rat
Order of mammals
1821 Suborders Anomaluromorpha Castorimorpha Hystricomorpha (incl. Caviomorpha) Myomorpha Sciuromorpha Combined range of all rodent species (not including
Rodent
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Dasyprocta (Agoutis) Azara's agouti (Dasyprocta azarae) Coiban agouti
Red-rumped_agouti
Release of urine from the urinary bladder
and associated behaviour in the mara, Dolichotis patagonum (Rodentia: Caviomorpha)". Journal of Zoology. 203 (2): 298–301. doi:10.1111/j.1469-7998.1984
Urination
Extinct genus of rodents
Formation of Chubut Province, Argentina. The following cladogram of the Caviomorpha is based on Busker et al. 2020, showing the position of Incamys. Research
Incamys
Burrowing eusocial rodent
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Naked_mole-rat
H. 2014. A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from central Patagonia, Argentina. Journal of Mammalogy
List of mammals described in the 21st century
List_of_mammals_described_in_the_21st_century
Geologic formation in Brazil
"Anatomia craniana de Neoepiblema ambrosettianus (Ameghino 1889) (rodentia, Caviomorpha, Neoepiblemidae) do Mioceno-Pleioceno do estado do Acre, Brasil, e revisão
Solimões_Formation
Extinct genus of rodents
M. (2011). "New genus of giant Dinomyidae (Rodentia: Hystricognathi: Caviomorpha) from the late Miocene of Uruguay". Journal of Mammalogy. 92 (1): 169–178
Arazamys
Semi-aquatic rodent from South America
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Echimyinae Echimyini Dactylomys Bolivian bamboo rat (D. boliviensis)
Nutria
Genus of mammal
Arredondo, O. (1979). "Nuevos táxones fósiles de Capromyidae (Rodentia: Caviomorpha)". Poeyana. 195: 1–51. Borroto-Páez, R. (2012). "UPDATED CHECKLIST OF
Capromys
Species of rodent
qualitative and quantitative morphology in the genus Dasyprocta (Rodentia, Caviomorpha), with emphasis in D. punctata and D. variegata". Journal of Mammalogy
Brown_agouti
Species in mammal family Octodontidae
Octodontidae is a family of mammals in the order Rodentia and part of the Caviomorpha parvorder. Members of this family are called octodontids and include
List_of_octodontids
Genus of rodents
mountain ranges in northwestern Argentina. The oldest fossil record for the Caviomorpha appears at the late Eocene-Early Oligocene transition (37.5–31.5 mybp)
Abrocoma
Geologic formation in Ecuador
Material Notes Images Litopterna Indeterminate RHM Locality 4 A litoptern. Caviomorpha Indeterminate A caviomorph rodent. Nabondasypus Nabondasypus maddeni
Letrero_Formation
Extinct species of bat
believe that they would have preyed on rodents belonging to the family Caviomorpha. Other potential prey items that would have been available to D. draculae
Desmodus_draculae
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Erethizontinae Coendou (Prehensile-tailed porcupines) Baturite porcupine
North_American_porcupine
Species of rodent
(2014). "A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from central Patagonia, Argentina". Journal of Mammalogy
Plains_viscacha_rat
; Gonzales, L. A. (2026). "New Early Miocene hystricognath rodents (Caviomorpha) from the Madre de Dios River in the southeastern Peruvian Amazon". Papers
2026_in_paleomammalogy
Extinct genus of rodents
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Sivacanthion
Family of rodents
from the Deseadan Oligocene of Bolivia and the relationships of the Caviomorpha". Bulletin of the Museum of Comparative Zoology. 149: 371–543. Retrieved
Echimyidae
Extinct genus of rodents
found in the Abanico Formation of Chile. The following cladogram of the Caviomorpha is based on Busker et al. 2020, showing the position of Eoviscaccia.
Eoviscaccia
Family of rodents that includes the domestic guinea pig
Caviidae, the cavy family, is composed of rodents native to South America and includes the domestic guinea pig, wild cavies, and the largest living rodent
Caviidae
Period of geologic time (29.0–21.0 Ma)
Flynn, John J.; Croft, Darin A.; Wyss, André R. (2012), "Two new taxa (Caviomorpha, Rodentia) from the early Oligocene Tinguiririca fauna (Chile)", American
Deseadan
One of Earth's eight biogeographic realms
sloths, and armadillos New World monkeys Solenodontidae, the solenodons Caviomorpha rodents, including capybaras, guinea pigs, hutias, and chinchillas American
Neotropical_realm
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Dasyprocta (Agoutis) Azara's agouti (Dasyprocta azarae) Coiban agouti
Azara's_agouti
Extinct genus of rodent
configuration of † Tetrastylus intermedius Rovereto, 1914, and other dinomyids (Caviomorpha; Dinomyidae)". Journal of Vertebrate Paleontology. 37 (6) e1385476. doi:10
Tetrastylus
Extinct genus of rodents
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Bathyergoides
Species of rodent
1994. On the systematic position of Chaetomys subspinosus (Rodentia: Caviomorpha) based on evidence from the incisor enamel microstructure. Journal of
Bristle-spined_rat
Extinct genus of rodents
"Bite force and body mass of the fossil rodent Telicomys giganteus (Caviomorpha, Dinomyidae)". Historical Biology. 31 (5): 644–652. doi:10.1080/08912963
Telicomys
Genus of rodents
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Erethizontinae Coendou (Prehensile-tailed porcupines) Baturite porcupine
Prehensile-tailed_porcupine
Extinct genus of rodents
Argentina. Kramarz, Alejandro G. (1998). "Un nuevo Dasyproctidae (Rodentia, Caviomorpha) del Mioceno inferior De Patagonia". Ameghiniana. 35 (2): 181–192. ISSN 1851-8044
Australoprocta
Surname list
(2014), "A new species of the tetraploid vizcacha rat Tympanoctomys (Caviomorpha, Octodontidae) from central Patagonia, Argentina", Journal of Mammalogy
Kirchner
Species in mammal family Dasyproctidae
Dasyproctidae is a family of mammals in the order Rodentia and part of the Caviomorpha parvorder. Members of this family are called dasyproctids and include
List_of_dasyproctids
Species of rodent
2001). "Molecular relationships among Octodontidae (Mammalia: Rodentia: Caviomorpha)". Journal of Mammalian Evolution. 8 (1): 73–89. doi:10.1023/A:1011345000786
Bennett's_chinchilla_rat
Russell K. (June 2022). "Resizing the largest known extinct rodents (Caviomorpha: Dinomyidae, Neoepiblemidae) using occipital condyle width". Royal Society
Largest_prehistoric_animals
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Erethizontinae Coendou (Prehensile-tailed porcupines) Baturite porcupine
Baturite_porcupine
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Dasyprocta (Agoutis) Azara's agouti (Dasyprocta azarae) Coiban agouti
Coiban_agouti
MacPhee, R. D. E. (1993). "Body size in Amblyrhiza inundata (Rodentia: Caviomorpha), an extinct megafaunal rodent from the Anguilla Bank, West Indies: estimates
List_of_extinct_rodents
Geologic formation in Chubut Province, Argentina
S2CID 85705842. Kramarz, Alejandro G. (1998). "Un nuevo Dasyproctidae (Rodentia, Caviomorpha) del Mioceno inferior De Patagonia". Ameghiniana. 35 (2): 181–192. ISSN 1851-8044
Sarmiento_Formation
Genus of rodent
Quaternary fossil record of Myocastor Kerr, 1792 (Rodentia: Hystricognathi: Caviomorpha) from Brazil with taxonomical and environmental remarks". Quaternary
Myocastor
Extinct genus of rodents
Guilherme, Edson; Hsiou, Annie Schmaltz (12 June 2017). "A new rodent (Caviomorpha: Dinomyidae) from the upper Miocene of southwestern Brazilian Amazonia"
Ferigolomys
Extinct genus of caviomorph rodents
Neoreomys is an extinct genus of caviomorph rodent that lived in South America during the Miocene epoch. Phylogenetic analysis has shown Neoreomys to be
Neoreomys
Genus of rodents
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Ctenodactylus
South American land mammal age
Flynn, John J.; Croft, Darin A.; Wyss, André R. (2012), "Two new taxa (Caviomorpha, Rodentia) from the early Oligocene Tinguiririca fauna (Chile)", American
Divisaderan
Extinct genus of erethizontid rodent
Lauren A. (23 March 2026). "New Early Miocene hystricognath rodents (Caviomorpha) from the Madre de Dios River in the southeastern Peruvian Amazon". Papers
Matsigenkamys
Species of mammal
Class: Mammalia Order: Rodentia Suborder: Hystricomorpha Infraorder: Caviomorpha Abrocoma Bennett's chinchilla rat (Abrocoma bennettii) Bolivian chinchilla
Famatina_chinchilla_rat
Extinct species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Superfamily: Octodontoidea Genus: †Marisela Species: †M. gregoriana Binomial
Marisela_gregoriana
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Dasyprocta (Agoutis) Azara's agouti (Dasyprocta azarae) Coiban agouti
Mexican_agouti
Extinct family of rodents
Kramarz, A.G. 2001. Revision of the family Cephalomyidae (Rodentia, Caviomorpha) and new cephalomyids from the early Miocene of Patagonia. Palaeovertebrata
Neoepiblemidae
Species of mammal belonging to the spiny rat family of rodents
Luciano L. (2012-02-01). "Tooth morphology of Echimyidae (Rodentia, Caviomorpha): homology assessments, fossils, and evolution". Zoological Journal of
Owl's_spiny_rat
Genus of rodents
Class: Mammalia Order: Rodentia Infraorder: Hystricognathi Parvorder: Caviomorpha Superfamily: Cavioidea Family: Cuniculidae Miller & Gidley, 1918 Genus:
Paca
Extinct genus of rodent
Leonardo; Tomassini, Rodrigo L. (28 August 2024). "Dinomyid (Rodentia, Caviomorpha) diversity from the Late Miocene (Chasicoan Stage/Age) Cerro Azul Formation
Bondesiomys
Geological formation in northeastern Argentina
Luciano (April 2026), "Reassessing the Hyperdiverse Dinomyid (Rodentia, Caviomorpha) Assemblage from the Late Miocene Ituzaingó Formation (Entre Ríos Province
Ituzaingó_Formation
Period of geologic time (9.0–6.8 Ma)
Adriana M.; Bonini, Ricardo A. (2017), "A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: Implications for the origin of the genus
Huayquerian
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Dasyprocta (Agoutis) Azara's agouti (Dasyprocta azarae) Coiban agouti
Kalinowski's_agouti
Extinct genus of rodents
Animalia Phylum: Chordata Class: Mammalia Order: Rodentia Parvorder: Caviomorpha Genus: †Cachiyacuy Antoine et al. 2012 Species C. contamanensis Antoine
Cachiyacuy
Extinct genus of chinchilline rodent
Lauren A. (23 March 2026). "New Early Miocene hystricognath rodents (Caviomorpha) from the Madre de Dios River in the southeastern Peruvian Amazon". Papers
Peruchinchilla
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Erethizontinae Coendou (Prehensile-tailed porcupines) Baturite porcupine
Amazonian long-tailed porcupine
Amazonian_long-tailed_porcupine
Extinct species of rodent
Russell K. (June 2022). "Resizing the largest known extinct rodents (Caviomorpha: Dinomyidae, Neoepiblemidae) using occipital condyle width". Royal Society
Phoberomys_pattersoni
Family of rodents
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Petromus
Extinct family of rodents
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Chapattimyidae
; García-Esponda, C. M.; Noriega, J. I. (2025). "Coendou (Rodentia, Caviomorpha) in the Late Miocene of South America: tracing the roots of extant porcupines"
2025_in_paleomammalogy
Extinct genus of rodents
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Phiocricetomys
Genus of mammals belonging to the chinchilla family of rodents
(2016), "Lagostomus telenkechanum, sp. nov., a new lagostomine rodent (Caviomorpha, Chinchillidae) from the Arroyo Chasicó Formation (late Miocene; Buenos
Lagostomus
Species of rodent found in central Laos
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Laotian_rock_rat
Family of rodents
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Gundi
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Dasyprocta (Agoutis) Azara's agouti (Dasyprocta azarae) Coiban agouti
Black-rumped_agouti
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Ctenomys (tuco-tucos) Anderson's cujuchi (Ctenomys andersoni) Argentine
Plebiscite_tuco-tuco
Family of rodents
Class: Mammalia Order: Rodentia Suborder: Hystricomorpha Infraorder: Caviomorpha Abrocoma Bennett's chinchilla rat (Abrocoma bennettii) Bolivian chinchilla
Chinchilla_rat
Species of rodent
Class: Mammalia Order: Rodentia Suborder: Hystricomorpha Infraorder: Caviomorpha Abrocoma Bennett's chinchilla rat (Abrocoma bennettii) Bolivian chinchilla
Punta_de_Vacas_chinchilla_rat
Species of rodent
Class: Mammalia Order: Rodentia Suborder: Hystricomorpha Infraorder: Caviomorpha Abrocoma Bennett's chinchilla rat (Abrocoma bennettii) Bolivian chinchilla
Bolivian_chinchilla_rat
M. (2011). "New genus of giant Dinomyidae (Rodentia: Hystricognathi: Caviomorpha) from the late Miocene of Uruguay". Journal of Mammalogy. 92 (1): 169–178
Paleontology_in_Uruguay
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Dasyprocta (Agoutis) Azara's agouti (Dasyprocta azarae) Coiban agouti
Black_agouti
Extinct genus of ctenomyid rodent
microstructure in South American burrowing rodents (family Ctenomyidae, Caviomorpha)". Journal of Anatomy. 211 (3): 296–302. doi:10.1111/j.1469-7580.2007
Eucelophorus
Species of rodent
Rodentia Suborder: Hystricomorpha Infraorder: Hystricognathi Parvorder: Caviomorpha Ctenomys (tuco-tucos) Anderson's cujuchi (Ctenomys andersoni) Argentine
Coyhaique_tuco-tuco
Genus of mammals
Class: Mammalia Order: Rodentia Infraorder: Hystricognathi Parvorder: Caviomorpha Superfamily: Chinchilloidea Genus: †Saremmys Busker et al., 2019 Species:
Saremmys
Extinct genus of rodents
†Paraphiomys †Paraulacodus †Protohummus †Sacaresia Thryonomys Caviomorpha See below↓ Caviomorpha Incertae sedis †Luribayomys Cavioidea †Guiomys †Scotamys Caviidae
Phiomyoides
Subfamily of rodents
"Comprehensive total evidence phylogeny of chinchillids (Rodentia, Caviomorpha): Cheek teeth anatomy and evolution". Journal of Anatomy. 239 (2): 405–423
Lagostominae
Species of mammal
Ctenomys terraplen, the Laguna Terraplén tuco-tuco, is a vulnerable species of tuco-tuco. It is endemic to Argentina. Brook, F.; Verzi, D.; Martin, G.M
Ctenomys_terraplen
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CAVIOMORPHA
CAVIOMORPHA
CAVIOMORPHA
CAVIOMORPHA
CAVIOMORPHA
CAVIOMORPHA
CAVIOMORPHA
CAVIOMORPHA
CAVIOMORPHA
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