2010
DOI: 10.5252/g2010n2a4
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Nouveaux paresseux terrestres (Mammalia, Xenarthra, Mylodontidae) du Néogène de l'Altiplano bolivien

Abstract: Altiplano bolivien, anatomie, genre nouveau, espèces nouvelles. RÉSUMÉDeux nouveaux Mylodontinae (Xenarthra, Tardigrada, Mylodontoidea) provenant de l'Altiplano bolivien sont décrits. L'un, Pleuro lestodon dalenzae n. sp., a été découvert à quelques mètres sous un tuf volcanique servant de repère stratigraphique, la Toba 76, daté à 5,4 Ma ; il pourrait être d'âge huayquérien (Miocène supérieur) ou à la limite Huayquérien-Montehermoséen. Simo mylodon uccasamamensis n. gen., n. sp., a été découvert dans plusieur… Show more

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Cited by 30 publications
(96 citation statements)
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“…Mylodontidae are strongly hypsodont, with the greatest degree of hypsodonty among Scelidotheriinae, in which the skull, including the mandible and teeth, are anteroposteriorly extended as compared to Mylodontinae (following the systematics proposed by St-André et al, 2010). Effectively, Scelidotheriinae (5M/4m) are more hypsodont (mean HI = 0.91, LTR 10% higher than DM) than other members of Mylodontidae because the most anterior tooth has been modified (probably secondarily) into a molariform one (mean HI = 0.70, range between 0.62 and 0.78, LTR 30%/50% higher than DM; Table 2).…”
Section: Comparisons With Related Taxamentioning
confidence: 98%
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“…Mylodontidae are strongly hypsodont, with the greatest degree of hypsodonty among Scelidotheriinae, in which the skull, including the mandible and teeth, are anteroposteriorly extended as compared to Mylodontinae (following the systematics proposed by St-André et al, 2010). Effectively, Scelidotheriinae (5M/4m) are more hypsodont (mean HI = 0.91, LTR 10% higher than DM) than other members of Mylodontidae because the most anterior tooth has been modified (probably secondarily) into a molariform one (mean HI = 0.70, range between 0.62 and 0.78, LTR 30%/50% higher than DM; Table 2).…”
Section: Comparisons With Related Taxamentioning
confidence: 98%
“…Currently, four clades (generally recognized as families or superfamilies) of Tardigrada are commonly accepted: Megatheriidae (or Megatheriinae [excluding Planops] according to De Iuliis, 1996, andPujos, 2006), Mylodontidae (or Mylodontoidea according to St-André et al, 2010), Megalonychidae (or Megalonychoidea according to Muizon et al, 2004a), and Nothrotheriidae (see Gaudin, 2004, andDe Iuliis et al, 2011, for definition). The latter is clearly the most controversial, with different authors recognizing distinct genera.…”
Section: Present Knowledge Of Nothrotheriidae and Small Megatherioidementioning
confidence: 99%
“…El lóbulo distal se distingue de los correspondientes a los otros milodontinos neógenos conocidos por ser de sección elíptica y no falciforme, aunque hay que considerar que el m3 no presenta casi desgaste y que la estructura de los lóbulos varía notablemente a lo largo del desarrollo ontogenético. dIScuSIón Y concLuSIonES recientemente se han incrementado de manera notable las contribuciones referidas a los Mylodontinae del neógeno de América del Sur (carlini et al, 2006;rinderknecht et al, 2007Saint-André et al, 2010). no obstante, las especies procedentes del Mioceno tardío de Argentina (e.g., Pleurolestodon acutidens, Megabradys darwini, Ranculcus scalabrinianus, Promylodon paranensis Ameghino, Prolestodon paranensis Ameghino, Prolestodon antiquus Ameghino, Strabosodon acuticavus Ameghino, Strabosodon obtusicavus Ameghino, Sphenotherus zavaletianus, no han sido estudiadas en profundidad desde su determinación original.…”
Section: Descripción Y Comparacionesunclassified
“…Los rasgos observados en MMH-cH-86-9-24 permiten referirlo indudablemente a un Mylodontidae Mylodontinae; la presencia de un caniniforme desplazado labialmente, la existencia de un diastema entre este diente y la serie molariforme, y la morfología dentaria, en especial del m3, constituyen rasgos característicos que este ejemplar comparte la mayoría de los representantes de este grupo (véase Saint-André et al, 2010).…”
Section: Descripción Y Comparacionesunclassified
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