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Calchaquitherium
Taxonomy
Calchaquitherium was named by Nasif et al. (2000). Its type is Calchaquitherium mixtum.
It was assigned to Toxodontinae by Nasif et al. (2000).
It was assigned to Toxodontinae by Nasif et al. (2000).
Species
C. mixtum (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Calchaquitherium Nasif et al. |
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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. †Calchaquitherium Nasif et al. 2000
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†Calchaquitherium mixtum Nasif et al. 2000
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. L. Nasif et al. 2000 | Mandible with high coronoid apophysis, clearly surpassing the level of the condyle; post coronoid concavity deeper than in Mixotoxodon larensis van Frank; coronoid apophyses convergent as in Posnanskytherium Liendo; sym- physis with a median labial keel, more proximally placed than in Xotodon species; symphysis and lower incisors more verti- cally placed than in Mixotoxodon larensis and similar to Xot- odon species; I1 section kidney-shaped with a median lingual groove, as in Adinotherium ovinum (Owen) Ameghino; p2–p4 with smooth labial groove as in Xotodon species, Trigodon gaudryi Ameghino, and Hoffstetterius imperator Saint-Andre ́; meta-entoconid fold of m1–m2 marked as in Xotodon species and different to Mixotoxodon larensis; meta-entoconid fold of m3 smooth, as in Hoffstetterius imperator; length of p2–p4 less than 50% of the molar length as in Trigodon gaudryi, Palyei- dodon obtusum Roth, and Hoffstetterius imperator. |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Lillegraven 1979, Ji et al. 2002, MacFadden et al. 1996 | |||||
Age range: Huayquerian or 8.00000 to 5.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Huayquerian | Argentina (Catamarca) | C. mixtum (141369) |