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Equinae

Mammalia - Perissodactyla - Equidae

Synonyms
Synonymy list
YearName and author
1854Hippodon Leidy p. 90
1856Hipparion (Hippodon) Leidy p. 311
1878Stylonus Cope
1890Equinae Steinmann and Döderlein
1902Equinae Hay p. 616
1907Equinae Gidley p. 867
1950Equinae Lance
1955Equinae Quinn
1955Hippodon Quinn p. 13
1975Equinae Forsten p. 22
1988Stylonus Kelly and Lander
1989Equinae Manning and MacFadden p. 37
1989Equinae Prothero and Schoch p. 531
1991Equinae Baskin p. 999
1992Equinae Koufos
1995Equinae Kelly p. 3
1996Equinae Prado and Alberdi p. 676
1998Equinae MacFadden p. 547
2006Equinae Bravo-Cuevas and Ferrusquía-Villafranca p. 776
2008Equinae Bravo-Cuevas and Ferrusquia-Villafranca
2014Equinae Alberdi et al.
2014Equinae Ferrusquía-Villafranca et al. p. 204
2015Equinae Dos Santos Avilla et al. pp. 925909-3

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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
Laurasiatheria
Scrotifera
Euungulata
Panperissodactyla
superorderPerissodactylamorpha
orderPerissodactyla()
superfamilyEquoidea
familyEquidae
subfamilyEquinae
subfamilyEquinae

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.

Subfm. Equinae Steinmann and Döderlein 1890
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G. †Acritohippus Kelly 1995
+
Acritohippus isonesus Cope 1889
+
Invalid names: Merychippus praecocidens Russell 1933 [synonym]
Acritohippus quinni Kelly 1995
Acritohippus stylodontus Merriam 1919
Acritohippus tertius Osborn 1918
Tr. Equini Quinn 1955 [horse]
+
G. †Allohippus Kretzoi 1938
+
Allohippus stenonis Cocchi 1867
+
G. †Boreohippidion Dos Santos Avilla et al. 2015
+
Boreohippidion galushai MacFadden and Skinner 1979
G. †Calippus Matthew and Stirton 1930
+
Subg. †Calippus (Calippus) Matthew and Stirton 1930
Subg. †Calippus (Grammohippus) Hulbert, Jr. 1988
Calippus cerasinus Hulbert, Jr. 1988
Calippus circulus Quinn 1955
Calippus elachistus Hulbert, Jr. 1988
Calippus hondurensis Olson and McGrew 1941
+
Invalid names: Calippus castilli Cope 1886 [synonym]
Calippus maccartyi Hulbert, Jr. 1988
Calippus martini Hesse 1936
+
Invalid names: Equus laparensis Quinn 1955 [synonym]
Calippus placidus Leidy 1869
+
Invalid names: Calippus optimus Quinn 1955 [synonym]
Calippus proplacidus Osborn 1918
+
Invalid names: Calippus francisi Hay 1924 [synonym]
Calippus regulus Johnston 1937
+
Invalid names: Calippus anatinus Quinn 1955 [synonym]
G. †Dinohippus Quinn 1955
+
Dinohippus leardi Drescher 1941
Dinohippus leidyanus Osborn 1918
+
Invalid names: Pliohippus edensis Frick 1921 [synonym]
Dinohippus mexicanus Lance 1950
+
Invalid names: Equus (Dolichohippus) mesamexicanus Mooser 1973 [synonym], Hippotigris ocotensis Mooser 1958 [synonym], Protohippus muelleri Mooser 1964 [synonym]
Dinohippus osborni Frick 1921
Dinohippus spectans Cope 1880
Dinohippus subvenus Quinn 1955
G. Equus Linnaeus 1758 [horse]
+
Subg. Equus (Hemionus) Stehlin and Graziosi 1935
+
Equus (Hemionus) hemionus Pallas 1775 [onager]
Subg. †Equus (Hesperohippus) Hibbard 1955
+
+
Invalid names: Equus midlandensis Quinn 1957 [synonym], Onager oviedoi Mooser 1959 [synonym]
Subg. †Equus (Sussemionus) Eisenmann 2010
+
Equus africanus Heuglin and Fitzinger 1866 [African wild ass]
+
Equus africanus africanus Heuglin and Fitzinger 1866 [Nubian wild ass]
Equus africanus somaliensis Noack 1884 [Somali wild ass]
+
Invalid names: Equus africanus somalicus Sclater 1884 [synonym]
Invalid names: Asinus asinus dianae Dollman 1935 [synonym]
Equus alaskae Winans 1989
+
Invalid names: Equus lambei Hay 1917 [synonym]
Equus asinus Linnaeus 1758 [donkey]
Equus australis Moreno 1888
Equus caballus Linnaeus 1758 [horse]
+
Equus caballus ferus Boddaert 1785
Invalid names: Equus (Amerhippus) neogeus Lund 1840 [synonym], Equus hippagrus Smith 1841 [synonym]
Equus calobatus Troxell 1915
Equus capensis Broom 1909
Equus cedralensis Alberdi et al. 2014
Equus coliemensis Lazarev 1980
Equus complicatus Leidy 1858
+
Invalid names: Equus americanus Leidy 1847 [replaced], Equus eous Cope 1895 [synonym], Equus major DeKay 1842 [synonym]
Equus conversidens Owen 1869
+
Invalid names: Equus barcenaei Cope 1884 [synonym], Onager zoyatalis Mooser 1959 [synonym]
Equus eisenmannae Qiu et al. 2004
Equus excelsus Leidy 1858
+
Invalid names: Asinus aguascalentensis Mooser 1959 [synonym], Onager arellanoi Mooser 1959 [synonym], Onager hibbardi Mooser 1959 [synonym]
Equus francisci Hay 1915
+
Invalid names: Equus (Asinus) calobatus Troxell 1915 [synonym], Equus arrelanoi Mooser 1958 [synonym], Equus quinni Slaughter et al. 1962 [synonym]
Equus fraternus Leidy 1858
Equus fromanius Repenning et al. 1995
Equus giganteus Gidley 1901
Equus holmesi Hay 1920
Equus intermedius Cope 1895
Equus jubatus Hay 1927
Equus laurentius Hay 1913
Equus mexicanus Hibbard 1955
+
Invalid names: Equus occidentalis Leidy 1865 [synonym], Equus pacificus Leidy 1868 [synonym], Equus scotti Gidley 1900 [synonym]
Equus nalaikhaensis Kuznetsova and Zhegallo 1996
Equus nearcticus Blake 1863
Equus nevadanus Hay 1927
Equus niobrarensis Hay 1913
+
Invalid names: Equus hatcheri Hay 1915 [synonym]
Equus nobisi Pichardo 2004
Equus pectinatus Cope 1901
Equus przewalskii Poliakov 1881 [Przewalski's horse]
Equus pseudaltidens Hulbert, Jr. 1995
+
Invalid names: Onager altidens Quinn 1957 [replaced]
Equus quagga Boddaert 1785 [plains zebra]
+
Equus quagga boehmi Matschie 1892
Equus quagga borensis Lönnberg 1922
Equus quagga crawshayi De Winton 1896
Equus quagga quagga Boddaert 1785
Equus quagga burchelli Gray 1824 [Burchell's zebra]
Equus sanmeniensis Teilhard de Chardin and Piveteau 1930
Equus santaeelenae Spillmann 1938
Equus sivalensis Falconer and Cautley 1849
Equus tabeti Arambourg 1970
Equus yunnanensis Colbert 1940
Equus zebra Linnaeus 1758 [mountain zebra]
+
Equus zebra hartmannae Matschie 1898 [Hartmann's mountain zebra]
+
Invalid names: Equus matschiei Zukowsky 1924 [synonym], Equus penricei Thomas 1900 [synonym]
Equus zebra zebra Linnaeus 1758 [Cape mountain zebra]
+
Invalid names: Equus campestris Gray 1852 [synonym], Equus indica Trouessart 1898 [synonym], Equus montanus Burchell 1822 [synonym], Equus zebra frederici Trouessart 1905 [synonym]
Invalid names: Allozebra Trumler 1961 [synonym], Asinus Gray 1822 [synonym], Asinus africanus aegyptiacus Heuglin and Fitzinger 1866 [synonym], Dolichohippus Heller 1912 [synonym], Equus (Amerhippus) Hoffstetter 1950 [invalid subgroup], Equus (Parastilidequus) Mooser and Dalquest 1975 [invalid subgroup], Equus asinus aethiopicus Denman 1957 [synonym], Equus leidyi Hay 1913 [nomen vanum], Equus parastylidens Mooser 1959 [nomen dubium], Equus semiplicatus Cope 1893 [nomen dubium], Equus taeniopus Heuglin 1861 [nomen dubium], Haringtonhippus Heintzman et al. 2017 [synonym], Hippotherium princeps Leidy 1890 [nomen dubium], Hippotigris Hamilton-Smith 1841 [synonym], Kolpohippus van Hoepen 1930 [synonym], Kraterohippus van Hoepen 1930 [synonym], Neohippus Abel 1913 [synonym], Onager Brisson 1762 [synonym], Sterrohippus van Hopen 1930 [synonym], Tomolabis Cope 1892 [synonym]
G. †Heteropliohippus Kelly 1995
+
G. †Hippidion Owen 1869
+
Hippidion angulatus Ameghino 1889
Hippidion devillei Gervais 1855
+
Invalid names: Onohippidium bolivianum Philippi 1893 [synonym]
Hippidion principale Lund 1846
+
Invalid names: Onohippidium munizi Moreno 1891 [synonym]
Hippidion saldiasi Roth 1899
Subg. †Hippidium (Plagiohippus) Ameghino 1908
+
Plagiohippus chapalmalensis Ameghino 1908
Hippidium bonaerense Ameghino 1907
Hippidium entrerianum Ameghino 1886
Hippidium principale Lund 1846
+
Invalid names: Hippidion compressidens Ameghino 1889 [synonym]
Invalid names: Onohippidium Moreno 1891 [synonym], Parahipparion Ameghino 1904 [synonym]
G. †Parapliohippus Kelly 1995
+
Parapliohippus carrizoensis Dougherty 1940
+
Invalid names: Merychippus tehachapiensis Buwalda and Lewis 1955 [synonym]
G. †Plesippus Matthew 1924
+
Plesippus francescana Frick 1921
Plesippus idahoensis Merriam 1918
+
Invalid names: Equus achates Hay and Cook 1930 [synonym], Equus pons Quinn 1958 [synonym], Equus shoshonensis Gidley 1930 [synonym], Equus tau Owen 1869 [synonym]
Subtr. Pliohippina Prado and Alberdi 1996
+
G. †Astrohippus Stirton 1940
+
Astrohippus ansae Matthew and Stirton 1930
Astrohippus stockii Lance 1950
+
Invalid names: Astrohippus albidens Mooser 1968 [synonym]
G. †Pliohippus Marsh 1874
+
Subg. †Pliohippus (Astrohippus) Stirton 1940
+
Subg. †Pliohippus (Pliohippus) Stirton 1940
+
Pliohippus bakeri Azzaroli 1988
Pliohippus coalingensis Merriam 1914
Pliohippus fossulatus Cope 1893
+
Invalid names: Protohippus pachyops Cope 1893 [synonym]
Pliohippus mirabilis Leidy 1858
+
Invalid names: Merychippus campestris Gidley 1907 [synonym]
Pliohippus nobilis Osborn 1918
Pliohippus pernix Marsh 1874
+
Invalid names: Pliohippus lullianus Troxell 1916 [synonym], Pliohippus robustus Marsh 1874 [synonym]
Pliohippus potosinus Ferrusquía-Villafranca et al. 2014
Pliohippus proversus Merriam 1916
Pliohippus tantalus Merriam 1913
+
Invalid names: Pliohippus fairbanksi Merriam 1915 [synonym]
Pliohippus tehonensis Merriam 1915
Invalid names: Pliohippus gracilis Marsh 1892 [nomen dubium]
G. †Protohippus Leidy 1858
+
Subg. †Protohippus (Calippus) Matthew and Stirton 1930
Protohippus gidleyi Hulbert, Jr. 1988
Protohippus parvulus Marsh 1868
Protohippus perditus Leidy 1858
+
Invalid names: Eoequus wilsoni Quinn 1955 [synonym], Protohippus profectus Cope 1889 [synonym]
Protohippus supremus Leidy 1869
+
Invalid names: Hippotigris clarendonensis Quinn 1955 [synonym], Hippotigris parastylus Quinn 1955 [synonym], Hippotigris sellardsi Quinn 1955 [synonym], Protohippus simus Gidley 1906 [synonym]
Protohippus tantalus Merriam 1913
Protohippus vetus Quinn 1955
Invalid names: Eoequus Quinn 1955 [synonym], Protohippus medius Cope 1892 [nomen dubium]
Invalid names: Protohippina Quinn 1955 [empty]
Tr. †Hipparionini Quinn 1955 [hipparionine horse]
+
G. †Cormohipparion Skinner and MacFadden 1977
+
Subg. †Cormohipparion (Cormohipparion) Hulbert 1988
Cormohipparion emsliei Hulbert, Jr. 1988
Cormohipparion fricki Woodburne 2007
Cormohipparion goorisi MacFadden and Skinner 1981
+
Invalid names: Protohippus lenticularis Cope 1893 [synonym]
Cormohipparion johnsoni Woodburne 2007
Cormohipparion matthewi Woodburne 2007
Cormohipparion merriami Woodburne 2007
+
Invalid names: Hipparion mohavense Merriam 1913 [synonym], Hipparion mohavense callodonte Merriam 1915 [synonym], Hipparion platystyle Merriam 1915 [synonym]
Cormohipparion quinni Woodburne 1996
Cormohipparion skinneri Woodburne 2007
G. †Eurygnathohippus Van Hoepen 1930
+
Eurygnathohippus afarense Eisenmann 1976
Eurygnathohippus baardi Bone and Singer 1965
Eurygnathohippus cornelianus van Hoepen 1930
Eurygnathohippus hasumense Eisenmann 1983
Eurygnathohippus namaquense Haughton 1932
Eurygnathohippus turkanense Hooijer and Maglio 1974
Invalid names: Notohipparion Haughton 1932 [synonym]
G. †Hipparion de Christol 1832
+
Subg. †Hipparion (Proboscidipparion) Sefve 1927
+
Hipparion campbelli Bernor 1985
Hipparion chiai Liu et al. 1978
Hipparion concudense Pirlot 1956
Hipparion condoni Merriam 1915
Hipparion crassum Gervais 1859
Hipparion depereti Sondaar 1974
+
Invalid names: Hipparion gracile Guerin and Mein 1971 [synonym]
Hipparion dietrichi Wehrli 1941
Hipparion fissurae Crusafont and Sondaar 1971
Hipparion forcei Richey 1948
Hipparion gettyi Bernor 1985
Hipparion gromovae Villalta and Crusafont 1957
Hipparion laromae Pesquero et al. 2006
Hipparion longipes Gromova 1952
Hipparion macedonicum Koufos 1984
Hipparion matthewi Abel 1926
Hipparion mediterraneum Roth and Wagner 1855
Hipparion minus Pavlow 1890
Hipparion molayanense Zouhri 1992
Hipparion periafricanum Villalta and Crusafont 1957
Hipparion phlegrae Lazaridis and Tsoukala 2014
Hipparion prostylum Gervais 1849
+
Invalid names: Hipparion diplostylum Gervais 1849 [synonym], Hipparion mesostylum Gervais 1849 [synonym]
Hipparion richthofeni Koken 1885
Hipparion rocinantis Hernández Pacheco 1921
Hipparion shirleyae MacFadden 1984
Hipparion tehonense Merriam 1916
Hipparion theniusi Melentis 1969
Hipparion weihoense Liu et al. 1978
Invalid names: Hemihipparion Wehrli 1941 [synonym], Hipparion sellardsi Matthew and Stirton 1930 [nomen nudum], Hipparion sitifense Pomel 1897 [nomen dubium], Hipparitherium Christol 1847 [synonym], Stylohipparion van Hoepen 1932 [synonym]
G. †Hippotherium Kaup 1832
+
Hippotherium primigenium von Meyer 1829
G. †Nannippus Matthew 1926
+
Nannippus aztecus Mooser 1968
+
Invalid names: Hipparion minus Sellards 1916 [synonym]
Nannippus beckensis Dalquest and Donovan 1973
Nannippus morgani Hulbert, Jr. 1993
+
Invalid names: Equus minutus Cope 1893 [synonym], Equus phlegon Hay 1899 [synonym], Hipparion cragini Hay 1917 [synonym], Nannippus hesperides Mooser 1968 [synonym], Nannippus montezumae Leidy 1882 [synonym]
Nannippus westoni Simpson 1930
G. †Neohipparion Gidley 1903
+
Neohipparion affine Leidy 1869
+
Invalid names: Hippotherium speciosum Leidy 1854 [synonym], Neohipparion dolichops Gidley 1906 [synonym], Neohipparion whitneyi Gidley 1903 [synonym]
+
Invalid names: Hesperohipparion stirtoni Dalquest 1981 [synonym], Hippotherium rectidens Cope 1886 [synonym], Neohipparion arellanoi Stirton 1955 [synonym], Neohipparion floresi Stirton 1955 [synonym], Neohipparion molle Merriam 1915 [synonym], Neohipparion monias Mooser 1963 [synonym], Neohipparion otomii Mooser 1959 [synonym], Neohipparion phosphorum Simpson 1930 [synonym]
Neohipparion gidleyi Merriam 1915
Neohipparion leptode Merriam 1915
Neohipparion trampasense Edwards 1982
Invalid names: Hesperohipparion Dalquest 1981 [synonym], Neohipparion sanjuanensis Frick 1933 [nomen nudum]
G. †Pseudhipparion Ameghino 1904
+
Pseudhipparion gratum Leidy 1869
+
Invalid names: Neohipparion niobrarense Gidley 1906 [synonym]
Pseudhipparion hessei Webb and Hulbert, Jr. 1986
Pseudhipparion simpsoni Webb and Hulbert, Jr. 1986
Pseudhipparion skinneri Webb and Hulbert, Jr. 1986
Invalid names: Griphippus Quinn 1955 [synonym]
Invalid names: Hipparion anthonyi Merriam 1916 [nomen dubium], Hippotherium sinclairi Wortman 1882 [nomen dubium]
G. †Merychippus Leidy 1856
+
Subg. †Merychippus (Merychippus) Stirton 1940
+
Invalid names: Merychippus (Merychippus) coalingensis Clark 1921 [nomen nudum]
Subg. †Merychippus (Protohippus) Leidy 1858
+
Merychippus californicus Merriam 1915
Merychippus coloradense Osborn 1918
+
Invalid names: Hipparion sanfondensis Frick 1933 [synonym]
Merychippus eohipparion Osborn 1918
Merychippus eoplacidus Osborn 1918
Merychippus gunteri Simpson 1930
Merychippus insignis Leidy 1856
+
Invalid names: Merychippus paniensis Cope 1874 [synonym]
Merychippus labrosus Cope 1874
Merychippus missouriensis Douglass 1908
Merychippus patruus Osborn 1918
Merychippus primus Osborn 1918
Merychippus proparvulus Osborn 1918
Merychippus quintus Osborn 1918
Merychippus relictus Cope 1889
Merychippus republicanus Osborn 1918
Merychippus sejunctus Cope 1874
Merychippus seversus Cope 1878
Merychippus stevensi Dougherty 1940
Invalid names: Merychippus isonesus secundus Osborn 1918 [nomen vanum], Merychippus quartus Osborn 1918 [nomen vanum]
G. †Scaphohippus Pagnac 2006
+
Scaphohippus sumani Merriam 1915
+
Invalid names: Merychippus stylodus Merriam 1915 [synonym]
Invalid names: Calippini Quinn 1955 [empty], Hippodon Leidy 1854 [invalid subgroup], Hippotheriini Bonaparte 1850 [empty], Protohippini Quinn 1955 [empty], Stylonus Cope 1878 [nomen dubium]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingsubf
Diet: grazersubf
Diet 2: browsersubf
Reproduction: viviparoussubc
Comments: applies to Miocene genera exclusive of Equus (see)subf
Created: 2005-08-31 14:56:53
Modified: 2005-08-31 16:56:53
Source: subf = subfamily, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Hendy et al. 2009, Carroll 1988, Nowak 1991, Lillegraven 1979, MacFadden 1998

Age range

Maximum range based only on fossils: base of the Early/Lower Hemingfordian to the top of the Holocene or 20.43000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 15.97 Ma

Collections (3118 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Miocene23.03 - 5.333USA (Arizona) Pliohippus sp. (19177 19178 19179 19360 19574)
Miocene23.03 - 5.333USA (Kansas) Neohipparion eurystyle (18338)
Miocene23.03 - 5.333USA (Louisiana) Merychippus sp., Cormohipparion sp. (163859)
Miocene23.03 - 5.333USA (Washington) Hipparionini indet. (18903)
Miocene23.03 - 5.333Canada (Alberta) Equinae indet. (18781)
Miocene23.03 - 5.333USA (Idaho) Hipparionini indet. (18901 18942 19032) Merychippus sp. (18980)
Miocene23.03 - 5.333France (Vaucluse) Hipparion prostylum (201499 201500) Hipparion sp., Hipparion matthewi, Hipparion prostylum (201497)
Miocene23.03 - 5.333Honduras Calippus hondurensis (18743) Pliohippus hondurensis (18751)
Miocene23.03 - 5.333Mexico (Chihuahua) Nannippus minor (18714)
Miocene23.03 - 5.333USA (South Dakota) Equini indet., Neohipparion sp. (18080) Hipparion tehonense, Neohipparion sp., Protohippus sp. (18081) Hipparionini indet., Equini indet., Pliohippus lullianus (18297) Merychippus sp. (18393) Merychippus sp., Protohippus sp. (18084) Nannippus gratus (18064) Neohipparion occidentale, Pliohippus lullianus (18388) Neohipparion whitneyi (18114) Pliohippus lullianus (18384) Pliohippus sp. (18039 18367 18368) Protohippus martini (18115) Protohippus sp. (18185) Pseudhipparion gratum (18391) Pseudhipparion gratum, Neohipparion occidentale, Pliohippus sp. (18392) Pseudhipparion gratum, Neohipparion occidentale, Protohippus sp. (18389 18390) Pseudhipparion gratum, Neohipparion whitneyi, Merychippus sp., Pliohippus sp. (18038) Pseudhipparion gratum, Pliohippus lullianus (18395) Pseudhipparion retrusum (18183) Pseudhipparion sp. (18184 18386 18387) Pseudhipparion sp., Neohipparion whitneyi, Protohippus sp. (18113) Pseudhipparion sp., Pliohippus sp. (18318 18370) Pseudhipparion sp., Protohippus sp. (18182)
Miocene23.03 - 5.333USA (Oklahoma) Calippus martini, Nannippus sp., Neohipparion sp. (18105) Nannippus minor (18094)
Miocene23.03 - 5.333USA (Nebraska) Calippus sp. (18436) Neohipparion republicanus (18239 18313) Pliohippus sp., Pseudhipparion gratum (18213) Protohippus perditus (18354) Pseudhipparion retrusum (18274)
Miocene23.03 - 5.333Mexico (Chiapas) Cormohipparion sp. (18726)
Miocene23.03 - 5.333USA (Georgia) Calippus sp., Cormohipparion sp., Merychippus sp. (18592)
Miocene23.03 - 5.333USA (Montana) Equinae indet. (19012) Merychippus intermontanus, Merychippus isonesus (18969) Merychippus isonesus (18896 19002 19042) Merychippus sejunctus, Merychippus paniensis (19038) Merychippus sp. (18881) Nannippus lenticularis (18869 19118) Nannippus lenticularis, Pliohippus sp. (18966) Pliohippus interpolatus (19067 19068 19069) Pliohippus interpolatus, Nannippus lenticularis (18997) Pliohippus sp. (18812) Protohippus sp., Pseudhipparion sp. (18931)
Miocene23.03 - 5.333India (Madhya Pradesh) Equus primigenius (232179)
Miocene23.03 - 5.333Kazakhstan (Kalba) Hipparion sp. (13481)
Miocene23.03 - 5.333USA (Colorado) Pliohippus sp., Pseudhipparion sp., Merychippus campestris, Neohipparion coloradense, Protohippus labrosus (18310)
Miocene23.03 - 5.333USA (Maryland) Cormohipparion sp. (18593)
Miocene23.03 - 5.333USA (Texas) Calippus placidus, Calippus regulus (18371) Cormohipparion ingenuum, Pseudhipparion skinneri, Calippus cerasinus, Neohipparion occidentale (18687) Hipparionini indet., Calippus francisi, Merychippus circulus (18647) Hipparionini indet., Calippus francisi, Merychippus francisi, Merychippus perditus (18680) Hipparionini indet., Equidae indet. (18625 18671) Merychippus gunteri (18648) Merychippus gunteri, Hipparionini indet., Calippus francisi, Merychippus vetus (18658) Merychippus gunteri, Merychippus sp. (18677) Merychippus perditus (18614) Nannippus ingenuum (18612) Neohipparion occidentale (18678) Neohipparion occidentale, Nannippus ingenuum (18606 18689) Pliohippus pernix, Pseudhipparion hessei, Cormohipparion occidentale (18103) Protohippus perditus (18638)