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Australotariia

Osteichthyes - Carnivora - Otariidae

Synonymy list
YearName and author
2026Australotariia Hostos-Olivera et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
RankNameAuthor
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Ferae()
—Pancarnivora
—CarnivoramorphaWyss and Flynn 1993
—CarnivoraformesFlynn et al.
orderCarnivora
suborderCaniformiaKretzoi 1943
infraorderCanoidea(Simpson 1931)
superfamilyArctoideaFlower 1869
—PanpinnipediaWolsan et al. 2020
—Pinnipedimorpha
—Pinnipedia()
superfamilyOtarioidea
familyOtariidae()
—Australotariia
—Australotariia

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. Australotariia Hostos-Olivera et al. 2026
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G. Arctocephalus Cuvier 1826 [fur seal]
+
Subg. Arctocephalus (Callotaria) Palmer 1892
+
Arctocephalus australis Zimmerman 1783 [South American fur seal]
+
Invalid names: Arctophoca tropicalis Gray 1872 [synonym]
Arctocephalus doriferus Wood Jones 1925
+
Invalid names: Arctocephalus nigriscens Gray 1859 [synonym]
†Arctocephalus fischeri Gervais and Ameghino 1880
Arctocephalus forsteri Wood Jones 1922
Arctocephalus pusillus Schreber 1778 [brown fur seal]
+
Invalid names: Arctocephalus antarcticus Thunberg 1811 [synonym]
Arctocephalus tasmanica Scott and Lord 1926
Arctocephalus townsendi Merriam 1897 [Guadalupe fur seal]
Invalid names: Arctophoca Peters 1866 [synonym], Halarctos Gill 1866 [synonym]
G. Neophoca Gray 1866 [Australian sea lion]
+
Neophoca cinerea Peron 1816 [Australian sea lion]
+
Invalid names: Arctocephalus lobatus Gray 1828 [synonym], Arctocephalus williamsi McCoy 1877 [synonym], Otaria albicollis Péron 1816 [synonym], Otaria australis Quoy and Gaimard 1830 [synonym]
†Neophoca palatina King 1983
G. Otaria Peron 1816 [sea lion]
+
Otaria byronia Blainville 1820
+
Invalid names: Otaria flavescens Shaw 1800 [synonym]
†Otaria fischeri Gervais and Ameghino 1880
†Otaria josefinae Hostos-Olivera et al. 2026
Invalid names: Otoes Fischer 1817 [synonym], Phoca flavescens Shaw 1800 [nomen nudum], Platyrhynchus Cuvier 1827 [synonym], Pontoleo Gloger 1841 [synonym]
G. Phocarctos Gray 1844 [New Zealand sea lion]
+
Phocarctos hookeri Gray 1844 [New Zealand sea lion]
+
Invalid names: Arctocephalus caninus Berry 1928 [synonym]
Diagnosis
ReferenceDiagnosis
L. Hostos-Olivera et al. 2026Definition: The node-based clade originating with the most recent common ancestor of Otaria byronia (Blainville, 1820) and Arctocephalus australis Zimmerman, 1783, and including all its descendants.
Measurements
No measurements are available
Composition: hydroxyapatiteuc
Ontogeny: modification of partsuc
Environment: marineuc
Locomotion: actively mobilec
Life habit: amphibiousuc
Diet: piscivoret
Reproduction: viviparousuc
Created: 2005-06-08 10:11:09
Modified: 2005-06-08 12:11:09
Source: t = tribe, c = class, uc = unranked clade
References: Hendy et al. 2009, Gingerich 2003, Nowak 1991, Carreño and Cronin 1993

Age range

Maximum range based only on fossils: base of the Tortonian to the top of the Holocene or 11.63000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 7.246 Ma

Collections (144 total)


Time interval Ma Country or state Original ID and collection number
Tortonian11.63 - 7.246Argentina (Entre Rios) Otaria fischeri (13626)
Zanclean5.333 - 3.6South Africa Arctocephalus sp. (100313)
Piacenzian3.6 - 2.58Peru Arctocephalus sp. (219058)
Piacenzian3.6 - 2.58USA (California) Arctocephalus sp. (52218)
Gelasian2.58 - 1.8Peru (Arequipa) Otaria josefinae (277077)
Pleistocene2.58 - 0.0117New Zealand Neophoca palatina (59979)
Pleistocene2.58 - 0.0117South Africa Arctocephalus pusillus (21695 21916 21929 21953 115191 115205)
Pleistocene - Holocene2.58 - 0.0South Africa Arctocephalus pusillus (21951 21952)
Calabrian1.8 - 0.774Peru (Arequipa) Otaria josefinae (277076)
Calabrian1.8 - 0.774New Zealand Phocarctos hookeri (60121)
Middle Pleistocene0.774 - 0.129South Africa Arctocephalus pusillus (115185 115188)
Late/Upper Pleistocene0.129 - 0.0117Australia (Victoria) Arctocephalus williamsi (59980)
Late/Upper Pleistocene0.129 - 0.0117South Africa Arctocephalus pusillus (21709 90070 96974 113858 114988 115184 115225)
Late/Upper Pleistocene (interglacial)0.129 - 0.0117South Africa Arctocephalus pusillus (115167)
Late/Upper Pleistocene0.129 - 0.0117Brazil (Rio Grande do Sul) Arctocephalus sp., Otaria byronia (59978)
Late/Upper Pleistocene0.129 - 0.0117New Zealand (South Island) Arctocephalus forsteri (87999)
Late/Upper Pleistocene - Holocene0.129 - 0.0Mexico (Baja California) Arctocephalus townsendi (191984)
Late/Upper Pleistocene - Holocene0.129 - 0.0South Africa Arctocephalus pusillus (21922)
Holocene0.0117 - 0.0Argentina (Buenos Aires) Arctocephalus australis (220444)
Holocene0.0117 - 0.0Brazil Otaria flavescens (90118)
Holocene0.0117 - 0.0New Caledonia Arctocephalus forsteri (83454) Arctocephalus sp. (83455)
Holocene0.0117 - 0.0USA (California) Arctocephalus townsendi (162157 168826 168827 168828 168829 168830 168831 168832 168833 168834 168835 168836 168837 168838 168839 168840 168841 168842 168843 168844 168845 168846 168847 168848 168849 168850 168851 168852 168853 168854 168855 168856 168857 168858 168859 168860 168861 168862 168864 168865 168866 168867 168868 168869 168870 168871 168872 168873 168874 168875 168876 168877 168878 168879 168880 168881 168882 168883 168884 168885 239418)
Holocene0.0117 - 0.0Ecuador (Galapagos Islands) Arctocephalus galapagoensis (230264)
Holocene0.0117 - 0.0South Africa Arctocephalus pusillus (21706 21708 21862 21917 21918 21919 21921) Arctocephalus pusillus, Arctocephalus gazella (96973) Arctocephalus pusilus (199568) Arctocephalus tropicalis (230266)
Holocene0.0117 - 0.0New Zealand (North Island) Arctocephalus caninus (87900) Phocarctos hookeri (201977 201979 201980 201981 201983)
Holocene0.0117 - 0.0Antarctica Arctocephalus gazella (177180) Arctocephalus sp. (168599)
Holocene0.0117 - 0.0Japan Arctocephalus sp. (168598)
Holocene0.0117 - 0.0New Zealand Arctocephalus forsteri (81666) Phocarctos hookeri (60122 60123 60124 60125 162185 181846 201978)
Holocene0.0117 - 0.0Australia (Western Australia) Neophoca cinerea (90122 90123 90124 168606)
Holocene0.0117 - 0.0India Arctocephalus sp. (168597)
Holocene0.0117 - 0.0Australia (New South Wales) Arctocephalus pusillus (235090)
Holocene0.0117 - 0.0Australia (Victoria) Neophoca cinerea (168607)
Holocene0.0117 - 0.0Chile Arctocephalus sp. (168595) Arctocephalus sp., Otaria byronia (215543) Otaria sp. (168605)
Holocene0.0117 - 0.0Australia (South Australia) Neophoca cinerea (90125 90127)
Holocene0.0117 - 0.0Mexico Arctocephalus sp. (168600)
Holocene0.0117 - 0.0New Zealand (South Island) Phocarctos hookeri (162186 201982)
Holocene0.0117 - 0.0Argentina Arctocephalus sp. (168596) Otaria flavescens (162173) Otaria sp. (168604)
Holocene0.0117 - 0.0Brazil (Rio Grande do Sul) Otaria byronia (68025)
Holocene0.0117 - 0.0Chile ( Valparaíso) Arctocephalus philippii (230265)