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 remains (maxilla, dentary, and talus) attributed to Djebelemur martinezi, a ca. 50 Ma primate from Tunisia (Djebel Chambi), described and figured in the following publication: Marivaux et al. (2013), Djebelemur, a tiny pre-tooth-combed primate from the Eocene of Tunisia: a glimpse into the origin of crown strepsirhines. PLoS ONE. https://doi.org/10.1371/journal.pone.0080778  

Djebelemur martinezi CBI-1-544 View specimen

M3#365 CBI-1-544, left maxilla preserving P3-M3 and alveoli for P2 and C1 Type: "3D_surfaces" doi: 10.18563/m3.sf.365   state:published

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Djebelemur martinezi CBI-1-567 View specimen

M3#363 Isolated left upper P4 Type: "3D_surfaces" doi: 10.18563/m3.sf.363   state:published

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Djebelemur martinezi CBI-1-565-577-587-580 View specimen

M3#366 - CBI-1-565, a damaged right mandible, which consists of three isolated pieces found together and reassembled here: the anterior part of the dentary bears the p3 and m1, and alveoli for p4, p2 and c, while the posterior part preserves m3 and a portion of the ascending ramus; the m2 was found isolated but in the same small calcareous block treated by acid processing. - CBI-1-577, isolated right lower p4. - CBI-1-587, isolated left lower p2 (reversed). - CBI-1-580, isolated left lower canine (reversed). Type: "3D_surfaces" doi: 10.18563/m3.sf.366   state:published

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Djebelemur martinezi CBI-1-545 View specimen

M3#364 Right Talus Type: "3D_surfaces" doi: 10.18563/m3.sf.364   state:published

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This contribution contains the 3D models of the isolated teeth of Canaanimico amazonensis, a new stem platyrrhine primate, described and figured in the following publication: Marivaux et al. (2016), Neotropics provide insights into the emergence of New World monkeys: new dental evidence from the late Oligocene of Peruvian Amazonia. Journal of Human Evolution. http://dx.doi.org/10.1016/j.jhevol.2016.05.011
  

Canaanimico amazonensis MUSM-2499 View specimen

M3#289 3D model of left upper M2 Type: "3D_surfaces" doi: 10.18563/m3.sf.289   state:published

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Canaanimico amazonensis MUSM-2500 View specimen

M3#290 3D model of left upper M1 (lingual part) Type: "3D_surfaces" doi: 10.18563/m3.sf.290   state:published

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