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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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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The present 3D Dataset contains the 3D model of the brain endocast of Neoepiblema acreensis analyzed in “Small within the largest: Brain size and anatomy of the extinct Neoepiblema acreensis, a giant rodent from the Neotropics”. The 3D model was generated using CT-Scanning and techniques of virtual reconstruction.
  

Neoepiblema acreensis UFAC 4515 View specimen

M3#502 Brain endocast of Neoepiblema acreensis Type: "3D_surfaces" doi: 10.18563/m3.sf.502   state:published

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