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Trachytherus
Taxonomy
Trachytherus was named by Ameghino (1889).
It was replaced with Eutrachytherus by Ameghino (1897).
It was assigned to Trachytheridae by Ameghino (1894); to Typotheriidae by Lydekker (1894); to Trachytherinae by Simpson et al. (1962); to Trachytheriinae by Shockey et al. (2009) and Reguero and Prevosti (2010); and to Mesotheriidae by Simpson and Minoprio (1949), Carroll (1988) and Cerdeño (2014).
It was replaced with Eutrachytherus by Ameghino (1897).
It was assigned to Trachytheridae by Ameghino (1894); to Typotheriidae by Lydekker (1894); to Trachytherinae by Simpson et al. (1962); to Trachytheriinae by Shockey et al. (2009) and Reguero and Prevosti (2010); and to Mesotheriidae by Simpson and Minoprio (1949), Carroll (1988) and Cerdeño (2014).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1889 | Trachytherus Ameghino |
| 1894 | Trachytherus Ameghino p. 20 |
| 1894 | Trachytherus Lydekker p. 1 |
| 1895 | Proedium Ameghino pp. 623-624 |
| 1897 | Eutrachytherus Ameghino p. 427 |
| 1897 | Proedrium Ameghino p. 429 |
| 1899 | Ameghinotherium Podestá pp. 1-8 |
| 1904 | Isoproedrium Ameghino p. 28 |
| 1949 | Trachytherus Simpson and Minoprio |
| 1962 | Trachytherus Simpson et al. |
| 1988 | Proedium Carroll |
| 1988 | Trachytherus Carroll |
| 2004 | Anatrachytherus Reguero and Castro |
| 2009 | Trachytherus Shockey et al. |
| 2010 | Trachytherus Reguero and Prevosti |
| 2014 | Trachytherus Cerdeño |
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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. †Trachytherus Ameghino 1889
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†Trachytherus alloxus Billet et al. 2008
†Trachytherus ramirezi Shockey et al. 2016
†Trachytherus spegazzinianus Ameghino 1889
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Invalid names: Ameghinotherium curuzucuatiense Podestá 1899 [synonym], Anatrachytherus soriai Reguero and Castro 2004 [synonym], Coresodon cancellatus Ameghino 1901 [synonym], Eutrachytherus grandis Loomis 1914 [objective synonym], Proedium solitarium Ameghino 1894 [synonym], Trachytherus conturbatus Ameghino 1891 [synonym]
†Trachytherus subandinus Villarroel A. et al. 1994
Invalid names: Ameghinotherium Podestá 1899 [synonym], Anatrachytherus Reguero and Castro 2004 [synonym], Eutrachytherus Ameghino 1897 [objective synonym], Isoproedrium Ameghino 1904 [synonym], Proedium Ameghino 1895 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. A. Reguero and P. V. Castro 2004 (Anatrachytherus) | traquiterino de tamaño intermedio entre Trachytherus? mendocensis Simpson y Monoprio y Trachytherus spegazzinianus Ameghino. Fórmula dentaria más completa, I ?/2 C ?/1 P ?/4 M ?/3, que la de Trachytherus (I 3/2 C 0/0 P 3/3 M 3/ 3). Relación m2/m3 ca. 1. Mandíbula más corta y sínfisis menos procumbente que la deTrachytherus. |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Ji et al. 2002, Lillegraven 1979, Hendy et al. 2009, MacFadden et al. 1996, Carroll 1988 | |||||
Age range: base of the Deseadan to the top of the Colhuehuapian or 29.00000 to 17.50000 Ma
Collections (17 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rupelian | Argentina (Chubut) | T. sp. (176201) | |
| Deseadan | Bolivia (None) | T. spegazzinianus (13276) | |
| Deseadan | Argentina (Chubut) | Eutrachytherus spegazzinianus, Coresodon cancellatus, Isoproedrium solitarium, Anatrachytherus soriae, Eutrachytherus grandis (14211) T. sp., T. spegazzinianus (146358) T. spegazzinianus (92670 176647) | |
| Deseadan | Bolivia (Cochabama) | T. subandinus (176493) | |
| Deseadan | Argentina (Corrientes) | Ameghinotherium curuzucuatiense (176650) | |
| Deseadan | Peru (Moquegua) | T. sp. (59940 176469) T. spegazzinianus (176470) | |
| Deseadan | Bolivia (La Paz) | T. alloxus (133596) | |
| Deseadan | Bolivia | T. alloxus (95688) | |
| Deseadan | Argentina (Santa Cruz) | Proedium solitarium (50074) T. spegazzinianus (176269) | |
| Deseadan | Argentina (Mendoza) | T. spegazzinianus (176466) | |
| Colhuehuapian | Argentina (Mendoza) | Eutrachytherus modestus (189519) |