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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Megatherium altiplanicum
Taxonomy
Megatherium altiplanicum was named by Saint-Andre and De Iuliis (2001). Its type specimen is MNHN AYO 101, a partial skeleton (Premaxillae, maxillae, right and left dentaries, left femur), and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2001 | Megatherium altiplanicum Saint-Andre and De Iuliis |
| 2006 | Megatherium altiplanicum Pujos |
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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.
†Megatherium altiplanicum Saint-Andre and De Iuliis 2001
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. A. Saint-Andre and G. De Iuliis 2001 | Much smaller than M. americanum, and smaller also than M. medinae and M. tarijense. Ventral bulge of dentary relatively as deep as in M. americanum. Premaxillae firmly fused to each other and to maxillae, but less robust than in M. americanum. Palate narrows anterior to M1. Angular process distinct and more pointed than in M. americanum; posterior part of the symphysis extends to the plane passing through m1. Femur twisted, with greater trochanter lying posterior to the plane passing through the head and distal condyles, lateral margin forming a sigmoid curve, and patellar trochlea reduced to the lateral half of the distal end of the femur, but apparently not to the degree as occurs in M. americanum. |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Lillegraven 1979, Hendy et al. 2009, Nowak 1999, Ji et al. 2002, Carroll 1988 | |||||
Age range: Montehermosan or 5.00000 to 3.80000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Montehermosan | Bolivia (Oruro) | Megatherium altiplanicum (142382) | |
| Montehermosan | Bolivia (La Paz) | Megatherium altiplanicum (142381) | |
| Montehermosan - Chapadmalalan | Bolivia (La Paz) | Megatherium altiplanicum (142380) | |
| Montehermosan - Chapadmalalan | Bolivia (Oruro) | Megatherium altiplanicum (70643) |