The present 3D Dataset contains the 3D models analyzed in Bianucci et al. 2023, A heavyweight early whale pushes the boundaries of vertebrate morphology, Nature. These include bones of the holotype of new species Perucetus colossus (MUSM 3248), as well as the articulated skeleton of Cynthiacetus peruvianus (holotype, MNHN.F.PRU10). The latter was used to estimate the total skeleton volume of P. colossus. 

Perucetus colossus MUSM 3248 View specimen

M3#1131 Thirteen vertebrae, rib, and innominate of Perucetus colossus (holotype, MUSM NNNN). Type: "3D_surfaces" doi: 10.18563/m3.sf.1131   state:in_press

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Cynthiacetus peruvianus MNHN.F.PRU10 View specimen

M3#1130 Articulated skeleton of the holotype of Cynthiacetus peruvianus MNHN.F.PRU10 Type: "3D_surfaces" doi: 10.18563/m3.sf.1130   state:in_press

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The present 3D Dataset contains the 3D models analyzed in Pochat-Cottilloux Y., Martin J.E., Jouve S., Perrichon G., Adrien J., Salaviale C., de Muizon C., Cespedes R. & Amiot R. (2021). The neuroanatomy of Zulmasuchus querejazus (Crocodylomorpha, Sebecidae) and its implications for the paleoecology of sebecosuchians. The Anatomical Record, https://doi.org/10.1002/ar.24826 

Zulmasuchus querejazus MHNC 6672 View specimen

	M3#798 Left endosseous labyrinth of Z. querejazus (MHNC 6672). Type: "3D_surfaces" doi: 10.18563/m3.sf.798   state:published	Download 3D surface file
	M3#799 Reconstruction of the endocranial cavities of Z. querejazus (MHNC 6672). Type: "3D_surfaces" doi: 10.18563/m3.sf.799   state:published	Download 3D surface file
	M3#800 Three-dimensional reconstruction of the pneumatic cavities within the braincase of Z. querejazus (MHNC 6672) Type: "3D_surfaces" doi: 10.18563/m3.sf.800   state:published	Download 3D surface file

The present 3D Dataset contains the 3D models analyzed in: Amson et al., Under review. Evolutionary Adaptation to Aquatic Lifestyle in Extinct Sloths Can Lead to Systemic Alteration of Bone Structure doi:10.1098/rspb.2018.0270. 

Bradypus tridactylus MNHN ZM-MO-1999-1065 View specimen

M3#337 Brain endocast Type: "3D_surfaces" doi: 10.18563/m3.sf.337   state:published

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Choloepus didactylus MNHN-ZM-MO-1996-594 View specimen

M3#338 Brain endocast Type: "3D_surfaces" doi: 10.18563/m3.sf.338   state:published

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Thalassocnus natans MNHN-F-SAS-734 View specimen

M3#339 Brain endocast Type: "3D_surfaces" doi: 10.18563/m3.sf.339   state:published

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Thalassocnus littoralis MNHN-F-SAS-1610 View specimen

M3#340 Brain endocast Type: "3D_surfaces" doi: 10.18563/m3.sf.340   state:published

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Thalassocnus littoralis MNHN-F-SAS-1615 View specimen

M3#341 Brain endocast Type: "3D_surfaces" doi: 10.18563/m3.sf.341   state:published

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Thalassocnus carolomartini SMNK-3814 View specimen

M3#342 Brain endocast lacking right olfactory bulb Type: "3D_surfaces" doi: 10.18563/m3.sf.342   state:published

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This contribution contains the 3D model described and figured in the following publication: Billet G., Germain D., Ruf I., Muizon C. de, Hautier L. 2013. The inner ear of Megatherium and the evolution of the vestibular system in sloths. Journal of Anatomy 123:557-567, DOI: 10.1111/joa.12114. 

Megatherium americanum MNHN.F.PAM276 View specimen

M3#14 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. Type: "3D_surfaces" doi: 10.18563/m3.sf14   state:published

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