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Baraguatherium
Taxonomy
Baraguatherium was named by Rincón et al. (2016). It is considered to be a form taxon. Its type is Baraguatherium takumara. It was considered monophyletic by Rincón et al. (2016).
It was assigned to Orophodontinae by Varela et al. (2019); and to Mylodontidae by Rincón et al. (2016), Boscaini et al. (2019).
It was assigned to Orophodontinae by Varela et al. (2019); and to Mylodontidae by Rincón et al. (2016), Boscaini et al. (2019).
Species
B. takumara (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2016 | Baraguatherium Rincón et al. |
| 2019 | Baraguatherium Boscaini et al. |
| 2019 | Baraguatherium Varela 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. †Baraguatherium Rincón et al. 2016
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†Baraguatherium takumara Rincón et al. 2016
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. D. Rincón et al. 2016 | Baraguatherium differs from other sloths in the following character combination: toothrows parallel in occlusal view; long axis of molariforms parallel to the long axis of the toothrow; mandibular symphysis extends to the middle of the second lower tooth (mf1); diastema absent; tooth with a very thin layer of cementum; mf1-mf3 series of similar size and bilobate, with mf3 conspicuously piriform (anterior lobe much wider than the posterior lobe); occlusal surface of tooth beveled. Femur diaphysis straight; third trochanter positioned at the middle of the diaphysis and projects posteriorly; ectepicondyle and entepicondyle robust and project prominently. Baraguatherium differs from members of Megatheroidea and several Miocene mylodontoids (except Brievabradys, Orophodon, Octodontotherium, and Octodontobradys) in having a piriform last lower molariform (mf3). Differs from Paroctodontotherium, Octodontotherium, and Orophodon in having molariforms with a thin layer of cementum. Differs from Bolivartherium, Orophodon, and Pseudoprepotherium confusum by the presence of three bilobate lower molariforms. Differs from Brievabradys by its larger size, the presence of three bilobate lower molariforms, and the parallel lower toothrow. Differs from Octodontotherium by the absence of a marked asymmetric step between the anterior and posterior lobes in the last lower molariform. Differs from Octodontobradys by molariforms more quadrangular (in occlusal view) and mf3 piriform. Differs from Pseudoglyptodon spp. by the presence of bilobed (not trilobed) lower molariforms. |