The Petrosal bone of Prodremotherium sp.
3D model of Tartarocyon
3D skull model of the Permian reptile Captorhinus aguti
3D models of cetartiodactyl cervicothoracic vertebrae
3D models of Proterochampsa nodosa
This model corresponds to a virtually reconstructed bony labyrinth of the right inner ear of the skull MNHN-F-PAM 276, attributed to the extinct giant ground sloth Megatherium americanum. The fossil comes from Pleistocene deposits at Rio Salado (Prov. Buenos Aires, Argentina). The bony labyrinth of Megatherium shows semicircular canals that are proportionally much larger than in the modern two-toed and three-toed sloths. The cochlea in Megatherium shows 2.5 turns, which is a rather high value within Xenarthra. Overall, the shape of the bony labyrinth of Megatherium resembles more that of extant armadillos than that of its extant sloth relatives.
Data citation: Billet G., Germain D., Ruf I., de Muizon C., Hautier L., 2015. M3#14_MNHN.F.PAM276. doi: 10.18563/m3.sf14
Model solid/transparentDownload MRI Data