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Miohippus intermedius
Taxonomy
Mesohippus intermedius was named by Osborn and Wortman (1895). Its type specimen is AMNH 1196, a partial skeleton (skull and parts of skeleton), and it is a 3D body fossil. Its type locality is Indian Stronghold (Protoceras Channel), which is in a Whitneyan fluvial sandstone in the Brule Formation of South Dakota.
It was recombined as Pediohippus intermedius by Schlaikjer (1935) and Scott (1941); it was recombined as Miohippus intermedius by Hay (1902), Osborn (1918), Sinclair (1925), Hay (1930), Stock (1933), Stirton (1940), Macdonald (1951), Prothero and Shubin (1989) and MacFadden (1998).
It was recombined as Pediohippus intermedius by Schlaikjer (1935) and Scott (1941); it was recombined as Miohippus intermedius by Hay (1902), Osborn (1918), Sinclair (1925), Hay (1930), Stock (1933), Stirton (1940), Macdonald (1951), Prothero and Shubin (1989) and MacFadden (1998).
Synonymy list
Year | Name and author |
---|---|
1895 | Mesohippus intermedius Osborn and Wortman |
1902 | Miohippus intermedius Hay p. 614 |
1904 | Mesohippus intermedius Osborn p. 176 |
1918 | Miohippus intermedius Osborn p. 54 figs. Plates 1.9, 3.3. Text Fig. 32 |
1925 | Miohippus intermedius Sinclair |
1930 | Miohippus intermedius Hay |
1933 | Miohippus intermedius Stock |
1935 | Pediohippus intermedius Schlaikjer p. 145 |
1940 | Miohippus intermedius Stirton p. 172 |
1941 | Pediohippus intermedius Scott |
1951 | Miohippus intermedius Macdonald |
1989 | Miohippus intermedius Prothero and Shubin |
1998 | Miohippus intermedius 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.
†Miohippus intermedius Osborn and Wortman 1895
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Diagnosis
Reference | Diagnosis | |
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H. F. Osborn 1918 | (Osborn and Wortman, 1895, Osborn, 1918) (1) Skull with large and apparently undivided lachrymornalar fossa of the shallow vertically broad type: (2) cranial exceeds facial length. (3) Premolars 3-4 exceeding molars in width; (4) premolars 2-4 exceeding molars 1-3 in length; (5) molars bunoselenodont in lophs interrupted, protocone large; (6) hypostyle separate and distinct or only slightly connected with posterior cingulum, in some speci- mensl(e. g. American Museum 1043) still partly connected. Despite the foregoing progressive characters, (7) protoloph decidedly interrupted by protoconule; (8) molars more brachyodont than in M. meteulophus; (9) parastyle broad and rounded when worn, as in M. brachyatylus and M. bairdii. (10) A characteristic feature of this species is the long and rather slender metapodials combined with short phalanges; leads up into Kalobatippus. |
Measurements
No measurements are available
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Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
References: Carroll 1988, Nowak 1991, Lillegraven 1979, Ji et al. 2002, Hendy et al. 2009 |
Collections (6 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Whitneyan | USA (South Dakota) | Mesohippus intermedius (type locality: 17344) | |
Whitneyan - Monroecreekian | Canada (Saskatchewan) | Miohippus intermedius (17306) | |
Geringian | USA (Nebraska) | Miohippus intermedius (17494 17495) | |
Geringian | USA (Oregon) | Miohippus intermedius (17537) | |
Arikareean | USA (Nebraska) | Miohippus intermedius (17568) |