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Chinchilloidea

Mammalia - Rodentia

Synonymy list
YearName and author
1833Chinchilloidea Bennett
1958Chinchilloidea Wood p. 172
1959Chinchilloidea Wood and Patterson
1988Chinchilloidea Carroll
1989Chinchilloidea Vucetich
1999Chinchilloidea Nowak
2001Chinchilloidea Huchon and Douzery p. 246
2010Chinchilloidea Vucetich et al.
2012Chinchilloidea Bertrand et al.
2015Chinchilloidea Vucetich et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
RankNameAuthor
classMammalia
—Theriamorpha(Rowe 1993)
—Theriiformes()
—Trechnotheria
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentiaBowdich 1821
—CtenohystricaHuchon et al. 2000
infraorderHystricognathi(Tullberg 1899)
—Caviomorpha(Wood and Patterson 1955)
superfamilyChinchilloideaBennett 1833
superfamilyChinchilloideaBennett 1833

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Superfm. Chinchilloidea Bennett 1833
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G. †Borikenomys Marivaux et al. 2020
+
†Borikenomys praecursor Marivaux et al. 2020
Fm. Dinomyidae Peters 1873
+
G. †Branisamys Hoffstetter and Lavocat 1970
+
†Branisamys luribayensis Hoffstetter and Lavocat 1970
+
Invalid names: Villarroelomys bolivianus Hartenberger 1975 [synonym]
Invalid names: Villarroelomys Hartenberger 1975 [synonym]
G. †Briaromys Ameghino 1889
+
†Briaromys trouessartianus Ameghino 1889
G. †Carlesia Kraglievich 1926
G. †Colpostemma Ameghino 1891
G. †Diaphoromys Kraglievich 1931
+
†Diaphoromys arctus Rusconi 1945
†Diaphoromys gamayensis Kraglievich 1931
Invalid names: Diaphoromys mesopotamicus Kraglievich 1932 [nomen dubium]
G. Dinomys Peters 1873 [pacarana]
+
Dinomys branickii Peters 1873 [pacarana]
G. †Discolomys Ameghino 1889
+
†Discolomys cuneus Ameghino 1889
G. †Doellomys Alvarez 1947
G. †Drytomomys Anthony 1922
+
†Drytomomys aequatorialis Anthony 1922
Subfm. †Eumegamyinae Kraglievich 1926
+
G. †Arazamys Rinderknecht et al. 2011
+
†Arazamys castiglionii Rinderknecht et al. 2011
G. †Artigasia Francis and Mones 1966
+
†Artigasia magna Francis and Mones 1966
G. †Isostylomys Kraglievich 1926
+
†Isostylomys laevis Rusconi 1945
†Isostylomys laurillardi Ameghino 1883
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Invalid names: Isostylomys intermedius Mones and Castiglioni 1979 [synonym], Isostylomys magnus Mones and Castiglioni 1979 [synonym]
G. †Tetrastylus Ameghino 1886
+
†Tetrastylus angustidens Rusconi 1934
†Tetrastylus araucanus Ameghino 1904
†Tetrastylus atrophiatus Rovereto 1914
†Tetrastylus intermedius Rovereto 1914
†Tetrastylus laevigatus Ameghino 1886
†Tetrastylus montanus Ameghino 1891
Invalid names: Loxomylus Cope 1869 [synonym], Protelicomys Kraglievich 1931 [synonym], Tetrastylopsis Kraglievich 1931 [synonym]
G. †Eumegamys Kraglievich 1926
+
†Eumegamys contortus Ameghino 1889
†Eumegamys paranensis Kraglievich 1926
†Eumegamys scalabrinianus Kraglievich 1926
Invalid names: Megamys D'Orbigny 1842 [synonym]
G. †Eumegamysops Alvarez 1947
+
†Eumegamysops praependens Ameghino 1886
G. †Eusigmomys Ameghino 1905
+
†Eusigmomys oppositus Ameghino 1904
Invalid names: Sigmomys Ameghino 1904 [synonym]
G. †Ferigolomys Kerber et al. 2018
+
†Ferigolomys pacarana Kerber et al. 2018
G. †Gyriabrus Ameghino 1891
+
†Gyriabrus holmbergi Ameghino 1885
+
Invalid names: Gyriabrus teisseirei Kraglievich 1930 [objective synonym]
†Gyriabrus latidens Rusconi 1945
†Gyriabrus quadratus Rusconi 1945
†Gyriabrus royoi Stirton 1947
G. †Josephoartigasia Mones 2007
+
†Josephoartigasia monesi Rinderknecht and Blanco 2008
G. †Olenopsis Ameghino 1889
+
†Olenopsis typicus Ameghino 1889
†Olenopsis uncinus Ameghino 1889
G. †Paranamys Kraglievich 1934
+
†Paranamys typicus Ameghino 1889
G. †Pentastylodon Alvarez 1947
G. †Pentastylomys Kraglievich 1926
Subfm. †Potamarchinae Kraglievich 1926
+
G. †Potamarchus Burmeister 1885
+
†Potamarchus adamiae Kerber et al. 2016
†Potamarchus murinus Burmeister 1885
G. †Pseudopotamarchus Kerber et al. 2016
+
†Pseudopotamarchus villanuevai Kerber et al. 2016
G. †Protomegamys Kraglievich 1932
G. †Pseudosigmomys Kraglievich 1931
G. †Rusconia Kraglievich 1931
+
†Rusconia crassidens Kraglievich 1931
G. †Scleromys Ameghino 1887
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†Scleromys angustus Ameghino 1887
†Scleromys colombianus Fields 1957
†Scleromys osbornianus Ameghino 1894
+
Invalid names: Neoreomys insulatus Ameghino 1889 [synonym]
†Scleromys praecursor Boivin et al. 2017
†Scleromys quadrangulatus Kramarz 2006
†Scleromys schurmanni Stehlin 1940
G. †Simplimus Ameghino 1904
+
†Simplimus indivisus Ameghino 1904
G. †Telicomys Kraglievich 1926
+
†Telicomys amazonensis Frailey 1986
†Telicomys giganteus Ameghino 1904
†Telicomys gigantissimus Ameghino 1908
G. †Telodontomys Kraglievich 1931
+
†Telodontomys compressidens Kraglievich 1931
G. †Tetrastylomys Kraglievich 1926
G. †Garridomys Kramarz et al. 2013
+
†Garridomys curunuquem Kramarz et al. 2013
G. †Loncolicu Vucetich et al. 2015
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†Loncolicu tretos Vucetich et al. 2015
Fm. †Neoepiblemidae Kraglievich 1926
+
G. †Doryperimys Kramarz et al. 2015
+
†Doryperimys olsacheri Kramarz et al. 2015
G. †Neoepiblema Ameghino 1889
+
†Neoepiblema acreensis Bocquentin et al. 1990
†Neoepiblema horridula Ameghino 1886
+
Invalid names: Neoepiblema ambrosettianus Ameghino 1889 [synonym]
Invalid names: Epiblema Ameghino 1886 [synonym], Euphilus Ameghino 1889 [synonym]
G. †Perimys Ameghino 1887
+
†Perimys ameghinoi Scott 1905
†Perimys dissimilis Ameghino 1902
†Perimys erutus Ameghino 1887
+
Invalid names: Perimys angulatus Ameghino 1891 [synonym], Perimys diminutus Ameghino 1894 [synonym], Perimys procerus Ameghino 1889 [synonym], Perimys reflexus Ameghino 1894 [synonym], Perimys scalaris Ameghino 1891 [synonym], Sphodromys scalaris Ameghino 1887 [synonym]
†Perimys impactus Ameghino 1894
†Perimys incavatus Ameghino 1902
†Perimys incurvus Ameghino 1902
†Perimys intermedius Kramarz 2002
†Perimys oemulus Ameghino 1894
†Perimys onustus Ameghino 1887
†Perimys pacificus Ameghino 1894
†Perimys perpinguis Ameghino 1891
†Perimys planaris Ameghino 1891
†Perimys puellus Ameghino 1891
†Perimys pueraster Ameghino 1891
†Perimys scalabrinianus Ameghino 1889
†Perimys transversus Ameghino 1902
†Perimys zonatus Ameghino 1887
Invalid names: Sphiggomys Ameghino 1887 [synonym]
G. †Phoberomys Kraglievich 1926
+
†Phoberomys bordasi Patterson 1942
†Phoberomys burmeisteri Kraglievich 1926
+
Invalid names: Euphilus burmeisteri Ameghino 1891 [synonym], Phoberomys insolita Kraglievich 1940 [synonym], Phoberomys lozanoi Kraglievich 1940 [synonym], Phoberomys minima Kraglievich 1940 [synonym], Phoberomys praecursor Kraglievich 1932 [synonym]
†Phoberomys gyulavarii Kretzoi and Voros 1989
†Phoberomys pattersoni Bondesio and Bocquentin Villanueva 1988
+
Invalid names: Dabbenea pattersoni Mones 1980 [synonym]
Invalid names: Dabbenea Kraglievich 1926 [synonym], Perumys Kretzoi and Voros 1989 [synonym]
G. †Niedemys Kerber et al. 2016
+
†Niedemys piauiensis Kerber et al. 2016
G. †Saremmys Busker et al. 2019
+
†Saremmys ligcura Busker et al. 2019
G. †Ucayalimys Boivin et al. 2017
+
†Ucayalimys amahuacencis Arnal et al. 2022
†Ucayalimys crassidens Boivin et al. 2017
Invalid names: Heptaxodontidae Anthony 1917 [empty]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Maximum body mass: 3.5 kgs
Minimum body mass: 320 gg
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: viviparoussubc
Created: 2005-08-26 14:04:46
Modified: 2005-08-26 16:04:46
Source: s = species, g = genus, o = order, subc = subclass, c = class, subp = subphylum
References: Nowak 1999, Carroll 1988, Walton 1997, Ji et al. 2002, Lillegraven 1979, Hendy et al. 2009, Vizcaíno et al. 2010

Age range

Maximum range based only on fossils: base of the Deseadan to the top of the Holocene or 29.00000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 28.4 Ma

Collections (178 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Oligocene33.9 - 28.4Peru Chinchilloidea indet. (199559)
Rupelian33.9 - 28.1Argentina (Chubut) Chinchilloidea indet. (176201)
Rupelian33.9 - 28.1Peru (Departamento de Ucayali) Ucayalimys amahuacencis (149523)
Rupelian - Chattian33.9 - 23.03Peru (Loreto) Chinchilloidea indet. (176129)
Deseadan29.0 - 21.0Argentina (Chubut) Loncolicu tretos (14211)
Deseadan29.0 - 21.0Bolivia Branisamys luribayensis, Villarroelomys bolivianus (95688)
Deseadan29.0 - 21.0Bolivia (La Paz) Branisamys luribayensis (133539 133596)
Late/Upper Oligocene28.4 - 23.03Peru (Loreto) Caviomorpha n. sp. 4 (176130) C. n. sp. 1, Chinchilloidea indet. (176147)
Late/Upper Oligocene28.4 - 23.03Puerto Rico Borikenomys praecursor (155752)
Colhuehuapian21.0 - 17.5Argentina (Chubut) Chinchilloidea indet., Neoepiblemidae indet., Perimys dissimilis, Perimys transversus, Perimys incavatus, Saremmys ligcura (141368) Chinchilloidea indet., Perimys transversus, Perimys incavatus, Saremmys ligcura (27311) Perimys indet. (176441) Perimys sp. (197191 232404) Saremmys ligcura (203921)
Colhuehuapian21.0 - 17.5Argentina (Neuquén) Doryperimys olsacheri (197284) Garridomys curunuquem (197286) Garridomys curunuquem, Doryperimys olsacheri (89027 89028) Perimys sp. (89029)
Colhuehuapian21.0 - 17.5Peru Scleromys sp. (176149)
Colhuehuapian - Santacrucian21.0 - 16.3Argentina (Santa Cruz) Scleromys quadrangulatus (176628)
Burdigalian20.44 - 15.97Chile (Aisén) Perimys n. sp., Scleromys sp., Perimys intermedius, Perimys erutus, Perimys procerus, Perimys scalaris, Perimys onustus, Perimys perpinguis, Perimys impactus, Scleromys quadrangulatus (71843)
Burdigalian20.44 - 15.97Colombia (La Guajira) Dinomyidae sp. (166506)
Burdigalian20.44 - 15.97Chile (Magallanes) Perimys incavatus (204203)
Burdigalian20.44 - 15.97Argentina (Chubut) Dinomyidae gen. et sp. nov. (176205)
Burdigalian20.44 - 15.97Argentina (Santa Cruz) Perimys intermedius (59326) Perimys intermedius, Scleromys osbornianus, Scleromys quadrangulatus (59133) Perimys intermedius, Scleromys quadrangulatus (59319 59320 59321 59322 59323 59325)
Burdigalian - Langhian20.44 - 13.82Argentina (Santa Cruz) Perimys sp. (197691)
Burdigalian - Langhian20.44 - 13.82Peru (Cuzco) Scleromys sp. (144513)
Santacrucian17.5 - 16.3Argentina (San Juan) Scleromys sp. nov.? (197899)
Santacrucian17.5 - 16.3Peru (Cusco) Scleromys quadrangulatus (145126)
Santacrucian17.5 - 16.3Argentina (Mendoza) Scleromys sp. (176472)
Santacrucian17.5 - 16.3Argentina (Santa Cruz) Chinchilloidea indet., Perimys sp., Scleromys sp., Perimys erutus, Perimys onustus (210638) Perimys erutus (176599 176603 176641) Perimys erutus, Perimys impactus (176601) Perimys erutus, Scleromys angustus, Perimys onustus, Perimys zonatus, Perimys incavatus (176593) Perimys erutus, Scleromys osbornianus (59333 59334) Perimys perpinguis (207606) Perimys sp. (59332 142529 142533 176623 176624 176625 206243) Perimys sp., Perimys erutus, Scleromys osbornianus (59324) Perimys sp., Scleromys sp. (176571 210154) Perimys sp., Scleromys sp., Perimys erutus, Perimys incavatus (210786) Perimys sp., Scleromys sp., Perimys erutus, Perimys onustus (210637 210787)
Friasian16.3 - 15.5Argentina (Chubut) Simplimus individus (207566 207567)
Friasian16.3 - 15.5Chile (Aisén) Perimys sp., Simplimus sp. (139845)
Friasian16.3 - 15.5Argentina (Santa Cruz) Eusigmomys oppositus (207565)
Langhian - Serravallian15.97 - 11.62Argentina (Chubut) Simplimus indivisus (215594 215595)
Middle Miocene15.97 - 11.608Venezuela (Falcon) Potamarchus indet. (152543)
Middle Miocene15.97 - 11.608Peru Dinomyidae indet. (176135)
Serravallian13.82 - 11.62Peru (San Martin) Scleromys sp. (230802)
Serravallian - Tortonian13.82 - 7.246Peru Potamarchus sp. (176156) Simplimus indet. (176143)
Laventan13.8 - 11.0Colombia (Huila Department) Scleromys schurmanni, Scleromys colombianus, Olenopsis aequatorialis (12971)
Laventan13.8 - 11.0Peru (Ucayali) Drytomomys aequatorialis (144793) Drytomomys aequatorialis, Scleromys schurmanni (144794) Potamarchinae indet. (163839) Potamarchus murinus (163843)
Laventan13.8 - 11.0Colombia (Huila) Olenopsis aequatorialis (187115) Olenopsis sp. (188238 195253 195257) Scleromys colombianus (187116) Scleromys colombianus, Olenopsis aequatorialis (133692 136233) Scleromys schurmanni (135348 143790 187122 187718) Scleromys schurmanni, Scleromys colombianus (133648 133689 136211 145175 187078 195256) Scleromys schurmanni, Scleromys colombianus, Olenopsis aequatorialis (134806 187114) Scleromys sp. (133441) Simplimus sp. (133693)
Laventan13.8 - 11.0Venezuela (Falcon) Olenopsis sp. (146407)
Laventan13.8 - 11.0Peru Drytomomys aequatorialis, Scleromys schurmanni, Neoepiblema sp., Potamarchinae indet. (107992)
Laventan13.8 - 11.0Colombia (Tolima) Scleromys schurmanni, Scleromys colombianus (133780) Scleromys sp. (132559 132580)
Tortonian11.62 - 7.246Venezuela Potamarchus sp. (200111)
Tortonian11.62 - 7.246Peru Neoepiblema sp. (176128) Potamarchus sp., Drytomomys sp., Neoepiblema sp. (176162) Potamarchus sp., Eumegamyinae indet. (176133)
Tortonian11.62 - 7.246Brazil (Acre) Dinomyidae indet. (67384) Gyriabrus sp., Potamarchus sigmodon, Simplimus sp., Tetrastylus sp., Telicomys amazonensis, Potamarchus murinus, Phoberomys sp., Scleromys colombianus, Neoepiblemidae indet., Neoepiblema ambrosettianus, Neoepiblema horridula, Eumegamys paranensis, Ferigolomys pacarana, Phoberomys minima, Phoberomys burmeisteri, Phoberomys bordasi (55602) Phoberomys bordasi, Neoepiblema acreensis, Neoepiblema ambrosettianus, Ferigolomys pacarana (136717)
Tortonian11.62 - 7.246Brazil (Amazonas) Potamarchus murinus, Phoberomys bordasi, Drytomomys sp., Neoepiblemidae indet., Neoepiblema horridula (67386)
Late/Upper Miocene11.608 - 5.333Brazil (Acre) Neoepiblema horridula, Pseudopotamarchus villanuevai (136714) Neoepiblema sp., Potamarchus adamiae (191932) Potamarchus adamiae (191931) Potamarchus murinus (217883 217884) Telicomys amazonensis (145364) Tetrastylus sp., Potamarchus murinus, Phoberomys sp., Neoepiblemidae indet., Pseudopotamarchus villanuevai, Cardiomyinae indet. (134808)
Late/Upper Miocene11.608 - 5.333Venezuela Phoberomys sp. (92751)
Late/Upper Miocene11.608 - 5.333Brazil Gyriabrus sp., Potamarchus sigmodon, Simplimus sp., Tetrastylus sp., Telicomys amazonensis, Potamarchus murinus, Phoberomys sp., Scleromys colombianus, Neoepiblemidae indet., Eumegamys paranaensis, Potamarchus adamiae (57989)
Late/Upper Miocene11.608 - 5.333Uruguay Gyriabrus holmbergi (80364)
Late/Upper Miocene11.608 - 5.333Uruguay (San Jose) Tetrastylus sp., Arazamys castiglionii, Isostylomys laurillardi (152542)
Late/Upper Miocene11.608 - 5.333Venezuela (Falcon) Eumegamys indet. (146428 146429 146430 146432) Neoepiblemidae indet. (146426) Phoberomys indet. (146433 146446 146447) Phoberomys pattersoni (136776) Phoberomys sp., Neoepiblema sp. (147465) Phoberomys sp., Phoberomys pattersoni (143319) Potamarchus sp. (146427) Tetrastylus sp. (146449) Tetrastylus sp., Phoberomys indet., Eumegamys indet. (146431)
Late/Upper Miocene11.608 - 5.333Brazil (Amazonas) Phoberomys bordasi (148207)
Late/Upper Miocene11.608 - 5.333Venezuela (Falcón) Dabbenea pattersoni, Eumegamys sp. (136769) Phoberomys pattersoni (144595)
Late/Upper Miocene11.608 - 5.333Peru (Madre de Dios) Phoberomys sp. (202649)
Late/Upper Miocene - Early/Lower Pliocene11.608 - 3.6Colombia (Sucre) Gyriabrus royoi (133584)
Chasicoan10.0 - 9.0Argentina (Buenos Aires) Tetrastylus sp. (79180)
Huayquerian8.0 - 5.0Argentina (Entre Rios) Colpostemma sp., Diaphoromys sp., Diaphoromys compressidens, Gyriabrus sp., Gyriabrus glutinatus, Gyriabrus indivisus, Gyriabrus rebagliattii, Potamarchus sp., Potamarchus sigmodon, Tetrastylus aguilari, Tetrastylus diffusus, Tetrastylus robustus, Tetrastylus atavus, Potamarchus murinus, Phoberomys sp., Neoepiblema sp., Neoepiblema ambrosettianus, Phoberomys burmeisteri, Phoberomys praecursor, Phoberomys insolita, Phoberomys lozanoi, Phoberomys minima, Isostylomys sp., Isostylomys ameghinoi, Eumegamys sp., Eumegamys dubius, Eumegamys depressidens, Briaromys sp., Carlesia sp., Carlesia pendolai, Doellomys sp., Doellomys parcus, Eumegamysops sp., Paranamys sp., Pentastylodon racedi, Pseudosigmomys sp., Pseudosigmomys paranensis, Pentastylomys sp., Pentastylomys seriei, Protomegamys sp., Protomegamys coligatus, Tetrastylomys castellanosi, Discolomys cuneus, Olenopsis typicus, Perimys scalabrinianus, Briaromys trouessartianus, Epiblema horridula, Isostylomys laurillardi, Eumegamys paranensis, Eumegamys scalabrinianus, Megamys burmeisteri, Eumegamysops praependens, Telodontomys compressidens, Rusconia crassidens, Diaphoromys mesopotamicus, Eumegamys contortus, Tetrastylus laevigatus, Diaphoromys gamayensis, Gyriabrus holmbergi, Drytomomys sp., Tetrastylus sp. (55600)
Huayquerian8.0 - 5.0Bolivia (Chuquisaca) Dinomyidae indet. (68792)
Huayquerian8.0 - 5.0Argentina (La Rioja) Potamarchus sp., Potamarchus murinus (55596)
Huayquerian8.0 - 5.0Argentina (Catamarca) Gyriabrus sp., Potamarchus sp., Tetrastylus sp., Paranamys sp. (157794) Tetrastylus sp., Paranamys sp., Tetrastylus intermedius (198543) Tetrastylus sp., Tetrastylus intermedius, Tetrastylus laevigatus (198546 198547)
Huayquerian8.0 - 5.0Venezuela (Falcon) Phoberomys sp. (203983 203984) Phoberomys sp., Phoberomys pattersoni (145365)
Huayquerian8.0 - 5.0Argentina (La Pampa) Diaphoromys gamayensis (204361 230749) Dinomyidae indet., Tetrastylus sp. (152063) Tetrastylus araucanus, Tetrastylus laevigatus (87198) Tetrastylus laevigatus (152065 152066 230751) Tetrastylus sp. (152061)
Messinian7.246 - 5.333Argentina (La Pampa) Tetrastylus sp., Tetrastylus intermedius (141939)
Pliocene5.333 - 2.588Brazil Megamys sp. (143727)
Montehermosan5.0 - 3.8Uruguay (San José) Isostylomys intermedius (192107)
Montehermosan5.0 - 3.8Argentina (Buenos Aires) Telicomys giganteus (198863)
Montehermosan - Chapadmalalan5.0 - 3.0Argentina (Catamarca) Tetrastylus intermedius (157795)
Montehermosan - Ensenadan5.0 - 0.4Uruguay (San Jose) Josephoartigasia monesi (152517)
Montehermosan - Ensenadan5.0 - 0.4Uruguay Artigasia magma (71309)
Chapadmalalan4.0 - 3.0Argentina (Catamarca) Tetrastylus intermedius (205958)
Chapadmalalan4.0 - 3.0Argentina (Buenos Aires) Telicomys sp. (199156) Telicomys sp., Telicomys gigantissimus (199154)
Late/Upper Pliocene3.6 - 2.588Peru (Ucayali) Perumys gyulavarii (146532)
Late/Upper Pliocene3.6 - 2.588Argentina (Buenos Aires) Eumegamys sp., Gyriabrus quadratus, Gyriabrus latidens (53926)
Late/Upper Pliocene3.6 - 2.588Venezuela (Falcon) Neoepiblema sp. (122033)
Pleistocene (glacial)2.588 - 0.0117Brazil (Minas Gerais) Tetrastylus walteri (140474)
Late/Upper Pleistocene0.129 - 0.0117Brazil (Piauí) Niedemys piauiensis (211632)
Holocene0.0117 - 0.0Peru Dinomys brannicki (21689)