The Dinomyidae are a family of South American hystricognath rodents: the dinomyids were once a very speciose group, but now contains only a single living species, the pacarana. Several of the extinct dinomyids were among the largest rodents known to date; these included the bison-sized Josephoartigasia monesi[1] and the smaller Josephoartigasia magna.[2] The dinomyids are thought to have occupied ecological niches associated with large grazing mammals due to their ability to compete with the native ungulates of South America. On the other side, they could feed on aquatic or swampy plants along the ancient rivers.[3] These large forms disappeared after the formation of a connection to North America. The modern pacarana is only modest in size, considerably smaller than the capybara.
The Neoepiblemidae, an entirely extinct family, may actually be part of the Dinomyidae; both groups are undoubtedly closely related.
^Rinderknecht, Andrés; R. Ernesto Blanco (2008-01-15). "The largest fossil rodent". Proceedings of the Royal Society B: Biological Sciences. 275 (1637): 923–8. doi:10.1098/rspb.2007.1645. PMC 2599941. PMID 18198140. Josephoartigasia monesi sp. nov. (family: Dinomyidae; Rodentia: Hystricognathi: Caviomorpha)
^Francis, J.C. and A. Mones (1966). "Artigasia magna n. g., n. sp. (Eumegamyinae), un roedor gigantesco de la época Pliocena Superior de las Barrancas de San Gregorio, Departamento de San José, República Oriental del Uruguay". Kraglievana. 3: 89–100.
^Thomas Defler (2018). History of Terrestrial Mammals in South America. Springer International Publishing. p. 151. ISBN 9783319984490. Retrieved 2022-08-27.
The Dinomyidae are a family of South American hystricognath rodents: the dinomyids were once a very speciose group, but now contains only a single living...
Bolivia. The pacarana is the sole extant member of the rodent family Dinomyidae in the infraorder Caviomorpha; the paca that it resembles in appearance...
Early Pliocene to Early Pleistocene of Uruguay. The only living member of Dinomyidae is the pacarana. Josephoartigasia is named after Uruguayan national hero...
Superfamily Chinchilloidea Family Chinchillidae: chinchillas and allies Family Dinomyidae: pacaranas Pangolins, another mammal group with protective keratin body...
Superfamily Chinchilloidea Family Chinchillidae: chinchillas, viscachas Family Dinomyidae: pacaranas Superfamily Cavioidea Family Caviidae: cavies, including guinea...
now included in Phoberomys. The delineation between Neoepiblemidae and Dinomyidae has historically been unclear, with some genera (such as Phoberomys and...
(tuco-tucos) Cuniculidae (pacas) Dasyproctidae (agoutis and acouchis) Dinomyidae (pacaranas and their fossil relatives, including some of megafaunal size)...
Rinderknecht, A.; Bostelmann, E.; Ubilla, M. (2011). "New genus of giant Dinomyidae (Rodentia: Hystricognathi: Caviomorpha) from the late Miocene of Uruguay"...
Rodents are animals that gnaw with two continuously growing incisors. Forty percent of mammal species are rodents, and they inhabit every continent except...
Chinchillidae: (3 species) chinchillas and viscachas (South America) Family Dinomyidae: (1 species) pacarana (South America) Family Caviidae: (18 species) cavies...
Rinderknecht; Enrique Bostelmann T.; Martín Ubilla (2011). "New genus of giant Dinomyidae (Rodentia: Hystricognathi: Caviomorpha) from the late Miocene of Uruguay"...
(June 2022). "Resizing the largest known extinct rodents (Caviomorpha: Dinomyidae, Neoepiblemidae) using occipital condyle width". Royal Society Open Science...
Brazil has the largest mammal diversity in the world, with more than 600 described species and more likely to be discovered. According to the International...
ontogenetic development in the genus Isostylomys (Mammalia, Hystricognathi, Dinomyidae)". Journal of Systematic Palaeontology. 16 (3): 245–261. Retrieved 2023-11-25...
Cuniculidae Family Dasyproctidae Family Abrocomidae Family Chinchillidae Family Dinomyidae Family Erethizontidae Family Capromyidae Family Ctenomyidae Family Echimyidae...
(June 2022). "Resizing the largest known extinct rodents (Caviomorpha: Dinomyidae, Neoepiblemidae) using occipital condyle width". Royal Society Open Science...
Carlesia (mammal), a genus Kraglievich 1926 of mammals in the family Dinomyidae Carlesia (reptile), a genus Huene 1931 of lizards in the suborder Lacertilia...
Chinchillidae Genus Chinchilla Genus Lagidium Genus Lagostomus Family Dinomyidae Genus Dinomys - pacarana Family Erethizontidae Genus Chaetomys - bristle-spined...
fauna (Such as the large terror birds like Titanis, megafaunal members of Dinomyidae, and various South American native ungulates), with bears filling in the...
Uquian age. Fossils of Josephoartigasia magna, a rodent in the family Dinomyidae from this age have been found in southern Uruguay. Paleo Database: Chapadmalalan...
Taxa Species Locality Stratigraphic position Material Notes Images Dinomyidae D. sp. A hystricognath rodent. Octodontoidea Indeterminate. A hystricognath...
Rinderknecht, E. Bostelmann, and M. Ubilla. 2011. New genus of giant Dinomyidae (Rodentia: Hystricognathi: Caviomorpha) from the late Miocene of Uruguay...
Chinchillidae (chinchillas and viscachas). Three genera and six species. Dinomyidae (pacarana). One genus and one species. Abrocomidae (chinchilla rats and...
K. (2022). "Resizing the largest known extinct rodents (Caviomorpha: Dinomyidae, Neoepiblemidae) using occipital condyle width". Royal Society Open Science...
Guilherme, and Annie Schmaltz Hsiou. 2017. A new rodent (Caviomorpha: Dinomyidae) from the upper Miocene of southwestern Brazilian Amazonia. Historical...
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