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Mesohippus
Taxonomy
Mesohippus was named by Marsh (1875).
It was assigned to Palaeotheriinae by Cope (1881); to Equidae by Marsh (1875), Lambe (1908), Scott (1913), Stirton (1940), Johnson (1966), Carroll (1988) and Prothero and Schoch (1989); and to Anchitheriinae by Osborn and Wortman (1895), Gidley (1907) and MacFadden (1998).
It was assigned to Palaeotheriinae by Cope (1881); to Equidae by Marsh (1875), Lambe (1908), Scott (1913), Stirton (1940), Johnson (1966), Carroll (1988) and Prothero and Schoch (1989); and to Anchitheriinae by Osborn and Wortman (1895), Gidley (1907) and MacFadden (1998).
Synonyms
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Synonymy list
Year | Name and author |
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1873 | Anchitherium cuneatum Cope p. 7 |
1875 | Mesohippus Marsh |
1881 | Mesohippus Cope p. 399 |
1895 | Mesohippus Osborn and Wortman p. 352 |
1902 | Miohippus cuneatus Hay p. 614 |
1907 | Mesohippus Gidley p. 867 |
1908 | Mesohippus Lambe |
1913 | Mesohippus Scott p. 290 |
1930 | Mesohippus cuneatus Hay |
1940 | Mesohippus Stirton p. 169 |
1940 | Mesohippus cuneatus Stirton p. 170 |
1941 | Mesohippus cuneatus Scott |
1966 | Mesohippus Johnson p. 80 |
1988 | Mesohippus Carroll |
1989 | Mesohippus Prothero and Schoch p. 531 |
1998 | Mesohippus MacFadden p. 544 |
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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.
G. †Mesohippus Marsh 1875
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†Mesohippus bairdi Leidy 1850
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Invalid names: Mesohippus hypostylus Osborn 1904 [synonym], Mesohippus proteulophus Osborn 1904 [synonym], Mesohippus viejensis Clark and Beerbower 1967 [synonym]
†Mesohippus barbouri Schlaikjer 1931
†Mesohippus celer Marsh 1874
†Mesohippus latidens Douglass 1903
†Mesohippus propinquus Lambe 1905
†Mesohippus texanus McGrew 1971
†Mesohippus westoni Cope 1889
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Invalid names: Mesohippus montanensis Osborn 1904 [synonym], Mesohippus praecocidens Lambe 1905 [synonym]
Invalid names: Mesohippus cuneatus Cope 1873 [nomen dubium]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
References: Nowak 1991, Carroll 1988, Lillegraven 1979, Ji et al. 2002, Hendy et al. 2009 |
Age range: base of the Early/Lower Chadronian to the top of the Whitneyan or 37.20000 to 30.80000 Ma
Collections (76 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Duchesnean | USA (Texas) | M. sp., M. texanus (16828) M. texanus (16829 16830 16831 16835 16843 16851 16863) | |
Duchesnean | USA (California) | M. sp. (17039) | |
Duchesnean - Chadronian | Canada (Saskatchewan) | M. sp. (17020) | |
Duchesnean - Chadronian | USA (Montana) | M. sp. (16840) | |
Chadronian | USA (South Dakota) | M. celer, M. hypostylus, M. viejensis (16885) M. exoletus, M. celer (17006) M. latidens (16938) | |
Chadronian | Mexico (Chihuahua) | M. sp. (17015) | |
Chadronian | USA (Wyoming) | M. celer (17045) M. hypostylus (16951 16952 16954 16956 16957) M. montanensis (16920) M. westoni (17011) | |
Chadronian | USA (Colorado) | M. proteulophus (16977) M. sp. (16968) | |
Chadronian | USA (North Dakota) | M. propinquus, M. westoni (16991) | |
Chadronian | USA (Montana) | M. hypostylus (16915 16924 16925) M. latidens (17028) M. montanensis (17010) M. sp. (16927 16990) M. westoni (16988) | |
Chadronian | Canada (Saskatchewan) | M. propinquus, M. westoni (16919) M. sp. (16979 17023) M. westoni (16893) | |
Chadronian | USA (Texas) | M. texanus (16931 17016) | |
Chadronian | USA (Nebraska) | M. bairdi (16918) M. hypostylus (16929) | |
Early/Lower Chadronian | USA (Montana) | M. sp. (27245) | |
Late/Upper Chadronian | USA (Colorado) | M. sp. (85117) | |
Late/Upper Chadronian | USA (Montana) | M. sp. (17027) | |
Late/Upper Chadronian | Canada (Saskatchewan) | M. bairdi (16981) | |
Middle Chadronian | Canada (Saskatchewan) | M. propinquus, M. westoni (16928) | |
Middle Chadronian - Late/Upper Chadronian | USA (Colorado) | M. sp. (156988) | |
Orellan | Canada (Saskatchewan) | M. bairdi (17055 17111) | |
Orellan | USA (Montana) | M. hypostylus (17109 17154) M. sp. (17090 17138) | |
Orellan | USA (North Dakota) | M. bairdi (17101) | |
Orellan | USA (South Dakota) | M. bairdi (17102 17153 17162 17173 17174 17180) M. bairdii (17088 17094 17133 17296) M. exoletus (17141) M. sp. (17089 163487) Miohippus bairdii (17115) | |
Orellan | USA (Nebraska) | M. bairdi (17062 17098 17164 17165) | |
Orellan | USA (Wyoming) | M. bairdi (17116) | |
Orellan | USA (Oregon) | M. bairdi (17070) | |
Whitneyan | USA (Oregon) | M. sp. (17349) |