PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Xenarthra (edentate)

Mammalia

Taxonomy

Xenarthra was named by Cope (1889). It is extant.

It was reranked as the order Xenarthra by Gregory (1910), Hay (1930), Carroll (1988), Nowak (1991), Madsen et al. (2001), Wible et al. (2007), Croft et al. (2007) and Asher and Helgen (2010); it was reranked as the order Xenarthri by Jaekel (1911); it was reranked as the superorder Xenarthra by Villarroel (2000) and Kramarz et al. (2010); it was reranked as the unranked clade Xenarthra by McKenna and Bell (1997), Shockey et al. (2009) and Shockey (2017).

It was assigned to Bruta by Hay (1902); to Edentata by Gregory (1910); to Mesotheria by Jaekel (1911); to Monodelphia by Hay (1930); to Edentata by Gadow (1898), Simpson (1948), Paula Couto (1956) and MacFadden et al. (1993); to Eutheria by Carroll (1988), Nowak (1991) and Madsen et al. (2001); to Placentalia by McKenna and Bell (1997) and Wible et al. (2007); to Mammalia by Croft et al. (2007); to Mammalia by Villarroel (2000) and Shockey et al. (2009); to Eutheria by Kramarz et al. (2010); to Atlantogenata by Asher and Helgen (2010); and to Americatheria by Shockey (2017).

Subtaxa

Adiastaltus, Anathitus, Argyromanis, Cingulata, Dasypoda, Entelops dispar, Ernanodontidae, Hicanodonta (syn. Loricata), Myrmecophagi, Nomarthra, Orthoarthrus, Phyllophaga (syn. Gravigrada), Pilosa (syn. Anicanodonta), Placophori, Trematherium intermixtum

Sister taxa

Dasypoda, Hicanodonta (syn. Loricata), Myrmecophagi, Nomarthra, Placophori

Synonyms

Entelops dispar was named by Ameghino (1887).

It was considered a nomen dubium by Scott (1904).
Trematherium intermixtum was named by Ameghino (1887).

It was recombined as Schismotherium intermixtum by Mercerat (1891); it was considered a nomen dubium by Scott (1904).
Edentata was named by Cuvier (1798). It is extant.

It was reranked as the order Edentata by Parker and Haswell (1897); it was synonymized subjectively with Bruta by Hay (1902); it was reranked as the superorder Edentata by Ameghino (1906); it was reranked as the unranked clade Edentata by McKenna (1975); it was synonymized subjectively with Xenarthra by Hay (1930), Rose (1978) and McKenna and Bell (1997).

It was assigned to Unguiculata by Cope (1889); to Eutheria by Flower and Lydekker (1891); to Eutheria by Flower (1883), Gadow (1898) and Gregory (1910); to Eutheria by Parker and Haswell (1897) and McKenna (1975); and to Mammalia by Ameghino (1906) and Thurmond and Jones (1981).

Synonymy list

Year	Name and author
1798	Edentata Cuvier
1883	Edentata Flower p. 184
1887	Trematherium intermixtum Ameghino
1887	Entelops dispar Ameghino p. 23
1889	Entelops dispar Ameghino p. 654
1889	Xenarthra Cope p. 657
1889	Edentata Cope p. 875
1891	Edentata Flower and Lydekker p. 89
1891	Schismotherium intermixtum Mercerat
1894	Entelops dispar Ameghino p. 169
1894	Trematherium intermixtum Ameghino p. 169
1897	Edentata Parker and Haswell p. 449
1898	Edentata Gadow p. 41
1898	Xenarthra Gadow p. 41
1902	Xenarthra Hay p. 575
1906	Edentata Ameghino p. 91
1910	Edentata Gregory p. 465
1910	Xenarthra Gregory p. 465
1911	Xenarthri Jaekel p. 224
1930	Xenarthra Hay p. 401
1948	Xenarthra Simpson
1956	Xenarthra Paula Couto p. 99
1975	Edentata McKenna p. 40
1981	Edentata Thurmond and Jones p. 176
1988	Xenarthra Carroll
1991	Xenarthra Nowak
1993	Xenarthra MacFadden et al. p. 235
1997	Xenarthra McKenna and Bell p. 82
2000	Xenarthra Villarroel p. 118
2001	Xenarthra Madsen et al. p. 610
2007	Xenarthra Croft et al. p. 783
2007	Xenarthra Wible et al.
2009	Xenarthra Shockey et al.
2010	Xenarthra Asher and Helgen p. 3 figs. Figure 1
2010	Xenarthra Kramarz et al.
2017	Xenarthra Shockey

Is something missing? Join the Paleobiology Database and enter the data

Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()

Rank	Name	Author
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Americatheria
—	Xenarthra	()
—	Xenarthra	()

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.

Unr. Xenarthra Cope 1889 [edentate]

show all | hide all

G. †Adiastaltus Ameghino 1893

†Adiastaltus habilis Ameghino 1893

†Adiastaltus procerus Ameghino 1894

G. †Anathitus Ameghino 1894

†Anathitus revelator Ameghino 1894

G. †Argyromanis Ameghino 1904

†Argyromanis patagonica Ameghino 1904

Or. Cingulata Illiger 1811

Fm. Chlamyphoridae Pocock 1924

Subfm. Chlamyphorinae Bonaparte 1850

G. Calyptophractus Fitzinger 1871

Calyptophractus retusus Burmeister 1863 [Greater fairy armadillo]

G. †Chlamydophractus Barasoain et al. 2020

Chlamydophractus dimartinoi Barasoain et al. 2019

Invalid names: Chlamyphractus Barasoain et al. 2019 [replaced]

G. Chlamyphorus Harlan 1825

Chlamyphorus truncatus Harlan 1825 [Pink fairy armadillo]

G. †Proeutatus Ameghino 1891

†Proeutatus oenophorum Ameghino 1887

Invalid names: Eutatus bipunctatus Ameghino 1887 [synonym]

†Proeutatus postpuntum Ameghino 1902

†Proeutatus robustus Scott 1903

G. †Prozaedyus Ameghino 1891

†Prozaedius exilis Ameghino 1887

†Prozaedius humilis Ameghino 1902

†Prozaedius impressus Ameghino 1897

†Prozaedius minimus Desmarest 1860

†Prozaedius planus Ameghino 1897

†Prozaedyus exilis Ameghino 1887

†Prozaedyus humilis Ameghino 1902

†Prozaedyus proximus Ameghino 1887

†Prozaedyus scillatoyanei Barasoain et al. 2020

†Prozaedyus tenuissimus Ameghino 1902

G. †Stenotatus Ameghino 1891

†Stenotatus centralis Ameghino 1902

†Stenotatus hesternus Ameghino 1889

†Stenotatus karaikensis Ameghino 1889

†Stenotatus patagonicus Ameghino 1887

†Stenotatus planus Scillato-Yané and Carlini 1998

Unr. Dasypodoidea Gray 1821

Fm. Dasypodidae Gray 1821 [armadillo]

G. †Amblytatus Ameghino 1902

†Amblytatus areolatus Ameghino 1902

†Amblytatus pandus Ameghino 1902

G. †Archaeutatus Ameghino 1902

†Archaeutatus malaspinensis Ameghino 1902

G. †Astegotherium Ameghino 1902

†Astegotherium dichotomum Ameghino 1902

Subfm. †Dasypodinae Gray 1821

Tr. †Astegotheriini Ameghino 1906

Tr. Dasypodini Bonaparte 1850

G. †Tomiopsis Cope 1893

G. †Epipeltecoelus Ameghino 1904

†Epipeltecoelus recurvus Ameghino 1904

Subfm. Euphractinae Winge 1923

G. †Coelutaetus Ameghino 1902

G. †Dasypodon Castellanos 1925

Tr. Euphractini Winge 1923

Tr. †Eutatini Bordas 1933

Invalid names: Chlamyphorini Pocock 1924 [empty], Utaetini Simpson 1945 [empty]

G. Euphractus Wagler 1830 [six-banded armadillo]

Euphractus sexcinctus Linnaeus 1758 [six banded armadillo]

G. †Lumbreratherium Herrera et al. 2017

†Lumbreratherium oblitum Herrera et al. 2017

G. †Machlydotherium Ameghino 1902

†Machlydotherium asperum Ameghino 1902

†Machlydotherium ater Ameghino 1902

†Machlydotherium intortum Ameghino 1902

†Machlydotherium sparsum Ameghino 1902

G. †Macrochorobates Scillato Yané 1980

†Macrochorobates chapadmalensis Ameghino 1908

†Macrochorobates scalabrinii Moreno and Mercerat 1891

Invalid names: Acantharodeia Rovereto 1914 [synonym]

G. †Prodasypus Ameghino 1894

†Prodasypus centralis Ameghino 1902

†Prodasypus ornatus Ameghino 1897

G. †Prostegotherium Ameghino 1902

†Prostegotherium astrifer Ameghino 1902

†Prostegotherium notostylopianum Ameghino 1902

G. †Pseudeutatus Ameghino 1902

†Pseudeutatus circundatus Ameghino 1902

†Pseudeutatus clypeus Ameghino 1902

†Pseudeutatus cuneiformis Ameghino 1902

†Pseudeutatus depictus Ameghino 1902

Invalid names: Pachyzaedyus Ameghino 1902 [synonym]

G. †Pseudostegotherium Ameghino 1902

†Pseudostegotherium chubutanum Ameghino 1902

†Pseudostegotherium glangeaudi Ameghino 1902

G. †Pucatherium Herrera et al. 2012

†Pucatherium parvum Herrera et al. 2012

G. †Punatherium Ciancio et al. 2016

†Punatherium catamarcensis Ciancio et al. 2016

G. †Stegotheriopsis Bordas 1939

Invalid names: Stegotheriopsis gaimanensis Bordas 1939 [invalid subgroup]

Subfm. Tolypeutinae Gray 1865

G. †Kuntinaru Billet et al. 2011

Tr. †Priodontini Gray 1873

G. Tolypeutes Illiger 1811 [three-banded armadillo]

Tr. †Tolypeutini Gray 1865

G. †Vetelia Ameghino 1891

G. †Utaetus Ameghino 1902

†Utaetus buccatus Ameghino 1902

Invalid names: Orthutaetus clavatus Ameghino 1902 [synonym], Orthutaetus crenulatus Ameghino 1902 [synonym], Posteutatus indemnis Ameghino 1902 [synonym], Posteutatus indentatus Ameghino 1902 [synonym], Posteutatus scabridus Ameghino 1902 [synonym], Utaetus argos Ameghino 1902 [synonym], Utaetus laxus Ameghino 1902 [synonym]

†Utaetus deustus Ameghino 1902

†Utaetus laevus Ameghino 1902

†Utaetus lenis Ameghino 1902

†Utaetus magnum Herrera et al. 2021

Invalid names: Anteutatus Ameghino 1902 [synonym], Orthutaetus Ameghino 1902 [synonym], Posteutatus Ameghino 1902 [synonym]

Invalid names: Chlamytheriinae Lydekker 1894 [empty], Dasypina Gray 1825 [empty], Meteutatus attonsus Ameghino 1902 [nomen vanum], Ornithoryncina Gray 1825 [empty], Orycteropina Gray 1825 [empty], Pampatheriinae Paula Couto 1954 [empty], Peltephilinae Lydekker 1894 [empty]

G. †Eocoleophorus Oliveira et al. 1997

†Eocoleophorus glyptodontoides Oliveira et al. 1997

Subor. †Glyptodontia Ameghino 1889

G. †Chacus Zurita 2002

G. †Coscinocercus Cabrera 1939

†Coscinocercus brachyurus Cabrera 1939

†Coscinocercus marcalaini Cabrera 1939

G. †Eonaucum Scillato-Yané and Carlini 1998

†Eonaucum colloncuranum Scillato-Yané and Carlini 1998

G. †Eosclerophorus Castellanos 1948

Fm. †Glyptatelidae Castellanos 1932

G. †Clypeotherium Scillato-Yané 1977

†Clypeotherium magnum Scillato-Yané 1977

G. †Glyptatelus Ameghino 1897

†Glyptatelus fractus Ameghino 1902

†Glyptatelus malaspinensis Ameghino 1902

†Glyptatelus tatusinus Ameghino 1897

G. †Lomaphorelus Ameghino 1902

†Lomaphorelus depstus Ameghino 1902

Superfm. †Glyptodontoidea Gray 1869

Fm. †Glyptodontidae Burmeister 1879 [glyptodon]

Subfm. †Doedicurinae Ameghino 1889

G. †Ecinepeltus

Subfm. †Glyptodontinae Gray 1869

Subfm. †Hoplophorinae Huxley 1864

Invalid names: Sclerocalyptidae Ameghino 1904 [synonym]

G. †Kelenkura Barasoain et al. 2022

G. †Panochthus Burmeister 1866

G. †Paraeucinepeltus González-Ruiz et al. 2011

G. †Parapropalaehoplophorus Croft et al. 2007

Subfm. †Plohophorinae Castellanos 1931

Invalid names: Palaehoplophorinae Castellanos 1931 [synonym]

Invalid names: Glyptatelinae Castellanos 1932 [empty], Sclerocalyptinae Ameghino 1891 [empty]

Tr. †Lomaphorini Hoffstetter 1958

G. †Lomaphorops Castellanos 1932

G. †Lomaphorus Ameghino 1889

G. †Peiranoa Castellanos 1946

G. †Trachycalyptoides Saint-André 1996

Fm. †Palaeopeltidae Ameghino 1894

G. †Palaeopeltis Ameghino 1895

Invalid names: Pseudorophodon Hoffestter 1954 [synonym]

Fm. †Pampatheriidae Paula Couto 1954

G. †Holmesina Simpson 1930

G. †Kraglievichia Castellanos 1927

G. †Pampatherium Ameghino 1875

Invalid names: Chlamydotherium Lund 1839 [replaced], Hoffstetteria Castellanos 1957 [synonym]

G. †Plaina Castellanos 1927

G. †Scirrotherium Edmund and Theodor 1997

G. †Tonnicinctus Góis et al. 2015

G. †Vassallia Castellanos 1927

Fm. †Panochthidae Castellanos 1927

G. †Hoplophorus Lund 1838

Subfm. †Panochthinae Burmeister 1866

Infraor. †Glyptodontoinei Gray 1869

G. †Eosclerocalyptus Ameghino 1919

†Eosclerocalyptus lineatus Ameghino 1888

†Eosclerocalyptus proximus Moreno and Mercerat 1891

Invalid names: Eosclerocalyptus lilloi Ameghino 1919 [synonym], Eosclerocalyptus planus Rovereto 1914 [synonym], Eosclerophorus paulacoutoi Castellanos 1948 [synonym], Neuryurus proximus Moreno and Mercerat 1891 [synonym], Sclerocalyptus planus Rovereto 1914 [synonym], Urotherium proximum Moreno and Mercerat 1891 [synonym]

†Eosclerocalyptus tapinocephalus Cabrera 1939

Invalid names: Hoplophractus tapinocefalus Cabrera 1939 [objective synonym]

G. †Hoplophractus Cabrera 1939

†Hoplophractus proximus Moreno and Mercerat 1891

G. †Pseudoplohophorus Castellanos 1926

†Pseudoplohophorus absolutus Perea 2005

†Pseudoplohophorus benvenutii Castellanos 1954

†Pseudoplohophorus berroi Castellanos 1940

†Pseudoplohophorus coloniensis Kraglievich 1932

†Pseudoplohophorus compressus Castellanos 1940

†Pseudoplohophorus francisi Mones 1970

†Pseudoplohophorus gracilis Castellanos 1940

†Pseudoplohophorus guimaraensi Kraglievich 1932

†Pseudoplohophorus orientalis Fariña 1981

†Pseudoplohophorus uncinatus Castellanos 1940

Invalid names: Asymmetrura Farina 1981 [synonym], Berthawyleria Castellanos 1939 [synonym], Caudaphorus Farina 1981 [synonym], Teisseiria Kraglievich 1932 [synonym], Trabalia Kraglevich 1932 [synonym]

G. †Stromaphorus Castellanos 1926

†Stromaphorus compressidens Moreno and Mercerat 1891

G. †Isolinia Castellanos 1951

†Isolinia cordubensis Castellanos 1936

Invalid names: Isolinia reartense Castellanos 1936 [synonym]

Tr. †Neothoracophorini Castellanos 1951

G. †Pseudoneothoracophorus Castellanos 1951

Tr. †Neuryurini Hoffstetter 1958

G. †Neuryurus Ameghino 1889

†Neuryurus chapalmalensis Ameghino 1908

†Neuryurus crassus Ameghino 1908

†Neuryurus giganteus Rovereto 1914

†Neuryurus interundatus Ameghino 1885

†Neuryurus rudis Gervais 1878

Invalid names: Euryurus Gervais and Ameghino [replaced]

G. †Pseudoeuryurus Ameghino 1889

Invalid names: Pseudoeuryurus lelongianus Ameghino 1889 [nomen dubium]

G. †Urotherium Castellanos 1926

†Urotherium interundatum Ameghino 1885

†Urotherium simile Castellanos 1948

†Urotherium simplex Castellanos 1926

Tr. †Palaehoplophorini Hoffstetter 1958

G. †Aspidocalyptus Cabrera 1939

†Aspidocalyptus castroi Cabrera 1939

G. †Chlamyphractus Castellanos 1939

Invalid names: Chlamyphractus pressulus Ameghino 1885 [nomen dubium]

G. †Palaehoplophoroides Scillato-Yané and Carlini 1998

†Palaehoplophoroides rothi Scillato-Yané and Carlini 1998

G. †Palaehoplophorus Ameghino 1883

†Palaehoplophorus antiquus Ameghino 1883

Invalid names: Palaehoplophorus scalabrini Ameghino 1883 [synonym]

†Palaehoplophorus chapalmalensis Ameghino 1908

†Palaehoplophorus meridionalis Ameghino 1904

†Palaehoplophorus pressulus Ameghino 1885

†Palaeohoplophorus scalabrinii Ameghino 1883

G. †Protoglyptodon Ameghino 1885

†Protoglyptodon primiformis Ameghino 1885

†Protoglyptodon sagradoi Calcaterra 1978

†Protoglyptodon sanpedroi Calcaterra 1978

†Protoglyptodon solidus Ameghino 1891

G. †Parahoplophorus Castellanos 1932

†Parahoplophorus paranensis Ameghino 1883

G. †Phlyctaenopyga Cabrera 1944

†Phlyctaenopyga ameghini Moreno 1882

Invalid names: Hoplophorus philippii Moreno and Mercerat 1891 [synonym], Neuryurus compressidens Moreno and Mercerat 1891 [synonym]

†Phlyctaenopyga trouessarti Moreno 1888

G. †Plohophoroides Castellanos 1928

†Plohophoroides conterminus Castellanos 1928

G. †Plohophorops Rusconi 1934

Infraor. †Propalaehoplophoroinei Ameghino 1891

Superfm. †Propalaehoplophoroidea Ameghino 1891

Fm. †Propalaehoplophoridae Ameghino 1891

G. †Stromaphoropsis Kraglevich 1932

†Stromaphoropsis scavinoi Kraglievich 1932

G. †Trachycalyptus Ameghino 1908

†Trachycalyptus chapalmalensis Ameghino 1908

†Trachycalyptus cingulatus Ameghino 1889

G. †Uruguayurus Mones 1987

G. †Zaphilus Ameghino 1889

Invalid names: Zaphilus larranagai Ameghino 1889 [nomen dubium]

G. †Noatherium Fernicola et al. 2021

†Noatherium emilioi Fernicola et al. 2021

Fm. †Pachyarmatheriidae Fernicola et al. 2018

G. †Neoglyptatelus Carlini et al. 1997

†Neoglyptatelus originalis Carlini et al. 1997

†Neoglyptatelus sincelejanus Villarroel and Clavijo 2005

†Neoglyptatelus uruguayensis Fernicola et al. 2018

G. †Pachyarmatherium Downing and White 1995

†Pachyarmatherium brasiliense Porpino et al. 2009

†Pachyarmatherium leiseyi Downing and White 1995

†Pachyarmatherium tenebris Rincon and White 2007

Unr. †Peltephilidae Ameghino 1894

G. †Anantiosodon Ameghino 1891

†Anantiosodon rarus Ameghino 1891

G. †Epipeltephilus Ameghino 1904

†Epipeltephilus caraguensis Montoya-Sanhueza et al. 2017

†Epipeltephilus kanti Gonzalez-Ruiz et al. 2012

†Epipeltephilus recurvus Ameghino 1904

G. †Parapeltecoelus Bordas 1938

†Parapeltecoelus pattersoni Bordas 1938

G. †Peltecoelus Ameghino 1902

†Peltecoelus praelucens Ameghino 1902

G. †Peltephilus Ameghino 1887

†Peltephilus depressus Ameghino 1897

†Peltephilus ferox Ameghino 1891

Invalid names: Peltephilus clarazianus Moreno and Mercerat 1891 [synonym]

†Peltephilus giganteus Ameghino 1894

†Peltephilus grandis Moreno and Mercerat 1891

†Peltephilus granosus Ameghino 1902

†Peltephilus nanus Ameghino 1898

†Peltephilus protervus Ameghino 1897

†Peltephilus pumilus Ameghino 1887

†Peltephilus rarus Ameghino 1891

†Peltephilus strepens Ameghino 1887

Invalid names: Peltephilus heusseri Moreno and Mercerat 1891 [synonym]

†Peltephilus undulatus Ameghino 1897

G. †Ronwolffia Shockey 2017

†Ronwolffia pacifica Shockey 2017

G. †Proeocoleophorus Sedor et al. 2017

†Proeocoleophorus carlinii Sedor et al. 2017

G. †Saltatherium Fernicola et al. 2021

†Saltatherium rosaurae Fernicola et al. 2021

G. †Yuruatherium Ciancio et al. 2012

†Yuruatherium tropicalis Ciancio et al. 2012

Invalid names: Euphracta [empty], Glyptodonta [empty]

Fm. †Ernanodontidae Ding 1979

G. †Asiabradypus Nessov 1987

†Asiabradypus incompositus Nessov 1987

Subor. Hicanodonta Ameghino 1889

Invalid names: Loricata [synonym], Mesodontia Ameghino 1885 [empty]

G. †Orthoarthrus Ameghino 1904

†Orthoarthrus mixtus Ameghino 1904

Unr. Phyllophaga Owen 1842

Superfm. †Megalonychoidea

G. †Proplatyarthrus Ameghino 1905

†Proplatyarthrus longipes Ameghino 1905

Invalid names: Nothrotheriidae Ameghino 1920 [empty]

G. †Pseudoglyptodon Engelmann 1987

†Pseudoglyptodon chilensis McKenna et al. 2006

†Pseudoglyptodon sallaensis Engelmann 1987

Invalid names: Gravigrada [synonym]

Infraor. Pilosa Flower 1883

Unr. Folivora Delsuc et al. 2001

Cl. †Eufolivora Delsuc 2001

Fm. Bradypodidae Gray 1821

G. Bradypus Linnaeus 1758

Invalid names: Bradypodina Bonaparte 1850 [empty]

Superfm. †Megatherioidea Gray 1821

G. †Hiskatherium Pujos et al. 2011

Fm. †Megalonychidae Gervais 1855

Invalid names: Choloepidae Gray 1871 [synonym]

Unr. †Megatheria

G. †Pelecyodon Ameghino 1891

G. †Schismotherium Ameghino 1887

G. †Similhapalops Pujos et al. 2021

Fm. †Mylodontidae Ameghino 1889

G. †Chubutherium Cattoi 1962

Tr. †Lestodontini Gaudin 2004

G. †Magdalenabradys Rincón and McDonald 2020

Subfm. †Mylodontinae Gill 1872

G. †Nematherium Ameghino 1887

G. †Orophodon Ameghino 1894

Subfm. †Orophodontinae Hoffstetter 1954

G. †Paraglossotherium Esteban 1993

G. †Pseudoprepotherium Hoffstetter 1961

Invalid names: Mirandabradys Carlini et al. 2006 [synonym]

G. †Scelidotheridium Kraglievich 1934

Subfm. †Scelidotheriinae Ameghino 1889

Invalid names: Lestodontinae Ameghino 1888 [empty], Mirandabradys zabasi Carlini et al. 2006 [nomen dubium], Nematheriinae Mercerat 1891 [empty], Urumacotheriinae Negri and Ferigolo 2004 [empty]

Invalid names: Eutardigrada Gaudin 1995 [synonym]

Superfm. †Mylodontoidea Gill 1872

G. †Eionaletherium Rincón et al. 2015

†Eionaletherium tanycnemius Rincón et al. 2015

Invalid names: Tardigrada Latham and Davies 1795 [replaced]

Superfm. †Vermilingua

Fm. Cyclopedidae Pocock 1924

G. Cyclopes Gray 1811

Cyclopes didactyla Linnaeus 1758

G. †Palaeomyrmidon Rovereto 1914

†Palaeomyrmidon incomptus Rovereto 1914

Fm. Myrmecophagidae