This contribution contains the three-dimensional digital model of one isolated fossil tooth of an anthropoid primate (Ashaninkacebus simpsoni), discovered in sedimentary deposits located on the upper Rio Juruá in State of Acre, Brazil (Western Amazonia). This fossil was described, figured and discussed in the following publication: Marivaux et al. (2023), An eosimiid primate of South Asian affinities in the Paleogene of Western Amazonia and the origin of New World monkeys. Proceedings of the National Academy of Sciences USA. https://doi.org/10.1073/pnas.2301338120  
  

Ashaninkacebus simpsoni UFAC-CS 066 View specimen

M3#1114 Right first upper molar (rM1), pristine. Type: "3D_surfaces" doi: 10.18563/m3.sf.1114   state:published

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This contribution contains the three-dimensional digital models of a part of the dental fossil material (the large specimens) of caviomorph rodents, discovered in late middle Miocene detrital deposits of the TAR-31 locality in Peruvian Amazonia (San Martín, Peru). These fossils were described, figured and discussed in the following publication: Boivin, Marivaux et al. (2021), Late middle Miocene caviomorph rodents from Tarapoto, Peruvian Amazonia. PLoS ONE 16(11): e0258455. https://doi.org/10.1371/journal.pone.0258455
  

Microscleromys paradoxalis MUSM 4643 View specimen

M3#1115 Fragment of left mandibule preserving dp4, m1 and a portion of incisor Type: "3D_surfaces" doi: 10.18563/m3.sf.1115   state:published

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Ricardomys longidens MUSM 4375 View specimen

M3#1116 Fragment of left maxillary preserving DP4 and M1 (or M1 and M2) Type: "3D_surfaces" doi: 10.18563/m3.sf.1116   state:published

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"Scleromys" sp. MUSM 4272 View specimen

M3#1117 Isolated left upper molar Type: "3D_surfaces" doi: 10.18563/m3.sf.1117   state:published

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"Scleromys" sp. MUSM 4275 View specimen

M3#1118 Isolated right upper molar Type: "3D_surfaces" doi: 10.18563/m3.sf.1118   state:published

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"Scleromys" sp. MUSM 4273 View specimen

M3#1119 Isolated left upper molar Type: "3D_surfaces" doi: 10.18563/m3.sf.1119   state:published

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"Scleromys" sp. MUSM 4276 View specimen

M3#1120 Isolated right upper molar Type: "3D_surfaces" doi: 10.18563/m3.sf.1120   state:published

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"Scleromys" sp. MUSM 4282 View specimen

M3#1121 Isolated right lower molar Type: "3D_surfaces" doi: 10.18563/m3.sf.1121   state:published

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"Scleromys" sp. MUSM 4281 View specimen

M3#1122 Isolated right lower molar Type: "3D_surfaces" doi: 10.18563/m3.sf.1122   state:published

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"Scleromys" sp. MUSM 4280 View specimen

M3#1123 Isolated left p4 Type: "3D_surfaces" doi: 10.18563/m3.sf.1123   state:published

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"Scleromys" sp. MUSM 4277 View specimen

M3#1124 Isolated left lower dp4 Type: "3D_surfaces" doi: 10.18563/m3.sf.1124   state:published

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"Scleromys" sp. MUSM 4279 View specimen

M3#1125 Isolated right lower dp4 (mesial fragment) Type: "3D_surfaces" doi: 10.18563/m3.sf.1125   state:published

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gen.indet sp. indet MUSM 4283 View specimen

M3#1126 Isolated right lower p4 Type: "3D_surfaces" doi: 10.18563/m3.sf.1126   state:published

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Microscleromys sp. MUSM 4658 View specimen

M3#1127 Isolated left tarsal bone (astragalus) Type: "3D_surfaces" doi: 10.18563/m3.sf.1127   state:published

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The present 3D Dataset contains the 3D model analyzed in Gaetano, L. C., Abdala, F., Seoane, F. D., Tartaglione, A., Schulz, M., Otero, A., Leardi, J. M., Apaldetti, C., Krapovickas, V., and Steinbach, E. 2021. A new cynodont from the Upper Triassic Los Colorados Formation (Argentina, South America) reveals a novel paleobiogeographic context for mammalian ancestors. Scientific Reports. 

Tessellatia bonapartei PULR-V121 View specimen

M3#960 3D surface model of PULR-V121 Type: "3D_surfaces" doi: 10.18563/m3.sf.960   state:published

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This contribution provides the raw files for the μCT-scan data and renderings of the three-dimensional digital models of two fossil teeth of a geomyin geomorph rodent (Caribeomys merzeraudi), discovered from lower Oligocene deposits of Puerto Rico, San Sebastian Formation (locality LACM Loc. 8060). These fossils were described, figured and discussed in the following publication: Marivaux et al. (2021), An unpredicted ancient colonization of the West Indies by North American rodents: dental evidence of a geomorph from the early Oligocene of Puerto Rico. Papers in Palaeontology. https://doi.org/10.1002/spp2.1388 

Caribeomys merzeraudi LACM 162478 View specimen

	M3#712 Right lower dp4: isolated deciduous premolar. The specimen was scanned with a resolution of 5 µm using a μ-CT-scanning station EasyTom 150 / Rx Solutions (Montpellier RIO Imaging, ISE-M, Montpellier, France). AVIZO 7.1 (Visualization Sciences Group) software was used for visualization, segmentation, and 3D rendering. This isolated tooth was prepared within a “labelfield” module of AVIZO, using the segmentation threshold selection tool. Type: "3D_surfaces" doi: 10.18563/m3.sf.712   state:published	Download 3D surface file
	M3#714 5µm µCT data set . Right lower dp4: isolated deciduous premolar. The specimen was scanned with a resolution of 5 µm using a μ-CT-scanning station EasyTom 150 / Rx Solutions (Montpellier RIO Imaging, ISE-M, Montpellier, France). Type: "3D_CT" doi: 10.18563/m3.sf.714   state:published	Download CT data

Caribeomys merzeraudi LACM 162449 View specimen

	M3#713 Right lower molar (m1 or m2). The specimen was scanned with a resolution of 4.5 µm using a μ-CT-scanning station EasyTom 150 / Rx Solutions (Montpellier RIO Imaging, ISE-M, Montpellier, France). AVIZO 7.1 (Visualization Sciences Group) software was used for visualization, segmentation, and 3D rendering. This isolated tooth was prepared within a “labelfield” module of AVIZO, using the segmentation threshold selection tool. Type: "3D_surfaces" doi: 10.18563/m3.sf.713   state:published	Download 3D surface file
	M3#715 µCT data at 4.5µm Type: "3D_CT" doi: 10.18563/m3.sf.715   state:published	Download CT data

This contribution contains the 3D models of the fossil teeth of two chinchilloid caviomorph rodents (Borikenomys praecursor and Chinchilloidea gen. et sp. indet.) discovered from lower Oligocene deposits of Puerto Rico, San Sebastian Formation (locality LACM Loc. 8060). These fossils were described and figured in the following publication: Marivaux et al. (2020), Early Oligocene chinchilloid caviomorphs from Puerto Rico and the initial rodent colonization of the West Indies. Proceedings of the Royal Society B. http://dx.doi.org/10.1098/rspb.2019.2806 

Borikenomys praecursor LACM 162447 View specimen

M3#638 Right lower m3. This isolated tooth was scanned with a resolution of 6 µm using a μ-CT-scanning station EasyTom 150 / Rx Solutions (Montpellier RIO Imaging, ISE-M, Montpellier, France). AVIZO 7.1 (Visualization Sciences Group) software was used for visualization, segmentation, and 3D rendering. The specimen was prepared within a “labelfield” module of AVIZO, using the segmentation threshold selection tool. Type: "3D_surfaces" doi: 10.18563/m3.sf.638   state:published

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Borikenomys praecursor LACM 162446 View specimen

M3#639 Fragment of lower molar (most of the mesial part). This isolated broken tooth was scanned with a resolution of 6 µm using a μ-CT-scanning station EasyTom 150 / Rx Solutions (Montpellier RIO Imaging, ISE-M, Montpellier, France). AVIZO 7.1 (Visualization Sciences Group) software was used for visualization, segmentation, and 3D rendering. The specimen was prepared within a “labelfield” module of AVIZO, using the segmentation threshold selection tool. Type: "3D_surfaces" doi: 10.18563/m3.sf.639   state:published

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indet indet LACM 162448 View specimen

M3#640 Fragment of either an upper tooth (mesial laminae) or a lower tooth (distal laminae). The specimen was scanned with a resolution of 6 µm using a μ-CT-scanning station EasyTom 150 / Rx Solutions (Montpellier RIO Imaging, ISE-M, Montpellier, France). AVIZO 7.1 (Visualization Sciences Group) software was used for visualization, segmentation, and 3D rendering. This fragment of tooth was prepared within a “labelfield” module of AVIZO, using the segmentation threshold selection tool. Type: "3D_surfaces" doi: 10.18563/m3.sf.640   state:published

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This contribution contains the 3D models of the fossil teeth of a small-bodied platyrrhine primate, Neosaimiri cf. fieldsi (Cebinae, Cebidae, Platyrrhini) discovered from Laventan deposits (late Middle Miocene) of Peruvian Amazonia, San Martín Department (TAR-31: Tarapoto/Juan Guerra vertebrate fossil-bearing locus n°31). These fossils were described and figured in the following publication: Marivaux et al. (2020), New record of Neosaimiri (Cebidae, Platyrrhini) from the late Middle Miocene of Peruvian Amazonia. Journal of Human Evolution. https://doi.org/10.1016/j.jhevol.2020.102835 

Neosaimiri cf. fieldsi MUSM-3888 View specimen

M3#538 MUSM-3888, right m3 of Neosaimiri cf. fieldsi. Type: "3D_surfaces" doi: 10.18563/m3.sf.538   state:published

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Neosaimiri cf. fieldsi MUSM-3890 View specimen

M3#540 MUSM-3890, left dp2 of Neosaimiri cf. fieldsi. Type: "3D_surfaces" doi: 10.18563/m3.sf.540   state:published

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Neosaimiri cf. fieldsi MUSM-3895 View specimen

M3#541 MUSM-3895, right DC1 of Neosaimiri cf. fieldsi. Type: "3D_surfaces" doi: 10.18563/m3.sf.541   state:published

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Neosaimiri cf. fieldsi MUSM-3891 View specimen

M3#542 MUSM-3891, lingual part of a fragmentary right M1 or M2 of Neosaimiri cf. fieldsi. Type: "3D_surfaces" doi: 10.18563/m3.sf.542   state:published

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Neosaimiri cf. fieldsi MUSM-3892 View specimen

M3#543 MUSM-3892, distobuccal part of a fragmentary right upper molar (metacone region) of Neosaimiri cf. fieldsi. Type: "3D_surfaces" doi: 10.18563/m3.sf.543   state:published

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Neosaimiri cf. fieldsi MUSM-3893 View specimen

M3#544 MUSM-3893, buccal part of a fragmentary right P3 or P4 of Neosaimiri cf. fieldsi. Type: "3D_surfaces" doi: 10.18563/m3.sf.544   state:published

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Neosaimiri cf. fieldsi MUSM-3894 View specimen

M3#545 MUSM-3894, lingual part of a fragmentary left P3 or P4 of Neosaimiri cf. fieldsi. Type: "3D_surfaces" doi: 10.18563/m3.sf.545   state:published

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