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Xenicohippus
Taxonomy
Xenicohippus was named by Bown and Kihm (1981). It is not extant.
It was assigned to Lambdotheriidae by Prothero and Schoch (1989); to Hyracotheriinae by MacFadden (1998); and to Equidae by Bown and Kihm (1981) and Froehlich (2002).
It was assigned to Lambdotheriidae by Prothero and Schoch (1989); to Hyracotheriinae by MacFadden (1998); and to Equidae by Bown and Kihm (1981) and Froehlich (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1981 | Xenicohippus Bown and Kihm |
| 1989 | Xenicohippus Prothero and Schoch p. 536 |
| 1998 | Xenicohippus MacFadden p. 542 |
| 2002 | Xenicohippus Froehlich p. 152 |
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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. †Xenicohippus Bown and Kihm 1981
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†Xenicohippus craspedotum Cope 1880
†Xenicohippus grangeri Bown and Kihm 1981
†Xenicohippus osborni Bown and Kihm 1981
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Carroll 1988, Lillegraven 1979, Ji et al. 2002, Hendy et al. 2009, Nowak 1991 | |||||
Age range: base of the Lostcabinian to the top of the Bridgerian or 55.80000 to 46.20000 Ma
Collections (31 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lostcabinian | USA (Wyoming) | Hyracotherium craspedotum (15997) X. craspedotum (15999) | |
| Wasatchian | USA (New Mexico) | X. osborni (15430) X. sp. (15441 15663) | |
| Wasatchian | USA (Wyoming) | Hyracotherium craspedotum (15935) X. craspedotum (186931 186934 186950) X. grangeri (15575 15576 15578) | |
| Wasatchian | USA (Colorado) | Hyracotherium craspedotum (15293 15652) Hyracotherium sp. (15391) X. grangeri (15225 15290 15295 15362 15370 15406) X. osborni (15399 15404 15655) X. sp. (15309) X. sp., X. osborni (15402) | |
| Early/Lower Eocene | USA (Wyoming) | Hyracotherium craspedotum (15690) | |
| Bridgerian | USA (Wyoming) | Orohippus major (16081 16201 16224) | |
| Middle Eocene | USA (Oregon) | Orohippus major (16202) |