This contribution contains the three-dimensional digital models of fossil remains of platyrrhine primates from the late Middle to early Late Miocene (Upper Solimões Formation) of the State of Acre, Brazil (Western Amazonia). These fossils were described, figured and discussed in the following publication: Marivaux et al. (2026), New records of platyrrhine primates (Atelidae and Cebidae) from the Miocene of Western Amazonia, State of Acre, Brazil. Journal of Mammalian Evolution https://doi.org/10.1007/s10914-026-09829-z
  

Parabrachyteles vesperus UFAC-CS 488 View specimen

M3#1865 Isolated right M1 or M2 Type: "3D_surfaces" doi: 10.18563/m3.sf.1865   state:in_press

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Migmacebus juruaensis UFAC-CS 487 View specimen

M3#1866 Isolated right M1 or M2 Type: "3D_surfaces" doi: 10.18563/m3.sf.1866   state:in_press

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Gen indet sp. indet UFAC-CS 076 View specimen

M3#1867 Isolated right P3 or P4 Type: "3D_surfaces" doi: 10.18563/m3.sf.1867   state:in_press

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Gen indet sp. indet UFAC-CS 428 View specimen

M3#1868 Isolated left m1 or m2 Type: "3D_surfaces" doi: 10.18563/m3.sf.1868   state:in_press

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Gen indet sp. indet UFAC-CS 213 View specimen

M3#1869 Fragment of left talus Type: "3D_surfaces" doi: 10.18563/m3.sf.1869   state:in_press

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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 3D models of postcranial bones (humerus, ulna, innominate, femur, tibia, astragalus, navicular, and metatarsal III) described and figured in the following publication: “Postcranial morphology of the extinct rodent Neoepiblema (Rodentia: Chinchilloidea): insights into the paleobiology of neoepiblemids”. 

Neoepiblema acreensis UFAC 3549 View specimen

M3#719 UFAC 3549, left humerus missing the proximal region. Type: "3D_surfaces" doi: 10.18563/m3.sf.719   state:published

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Neoepiblema acreensis UFAC 5076 View specimen

M3#720 UFAC 5076, right humerus missing the proximal region. Type: "3D_surfaces" doi: 10.18563/m3.sf.720   state:published

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Neoepiblema acreensis UFAC 1939 View specimen

M3#721 UFAC 1939, right ulna missing the olecranon epiphysis and the distal region. Type: "3D_surfaces" doi: 10.18563/m3.sf.721   state:published

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Neoepiblema acreensis UFAC 3697 View specimen

M3#722 UFAC 3697, right innominate bone. Type: "3D_surfaces" doi: 10.18563/m3.sf.722   state:published

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Neoepiblema acreensis UFAC 2574 View specimen

M3#723 UFAC 2574, proximal region of a left femur. Type: "3D_surfaces" doi: 10.18563/m3.sf.723   state:published

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Neoepiblema acreensis UFAC 2937 View specimen

M3#724 UFAC 2937, right femur with damaged proximal region. Type: "3D_surfaces" doi: 10.18563/m3.sf.724   state:published

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Neoepiblema acreensis UFAC 2210 View specimen

M3#725 UFAC 2210, distal region of a right femur. Type: "3D_surfaces" doi: 10.18563/m3.sf.725   state:published

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Neoepiblema acreensis UFAC 1887 View specimen

M3#726 UFAC 1887, right tibia Type: "3D_surfaces" doi: 10.18563/m3.sf.726   state:published

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Neoepiblema acreensis UFAC 1840 View specimen

M3#727 UFAC 1840, left astragalus. Type: "3D_surfaces" doi: 10.18563/m3.sf.727   state:published

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Neoepiblema acreensis UFAC 2549 View specimen

M3#728 UFAC 2549, right astragalus. Type: "3D_surfaces" doi: 10.18563/m3.sf.728   state:published

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Neoepiblema acreensis UFAC 3672 View specimen

M3#729 UFAC 3672, right navicular. Type: "3D_surfaces" doi: 10.18563/m3.sf.729   state:published

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Neoepiblema acreensis UFAC 2116 View specimen

M3#730 UFAC 2116, left metatarsal III. Type: "3D_surfaces" doi: 10.18563/m3.sf.730   state:published

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Neoepiblema horridula UFAC 3260 View specimen

M3#731 UFAC 3260, fragmented left innominate. Type: "3D_surfaces" doi: 10.18563/m3.sf.731   state:published

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Neoepiblema horridula UFAC 2620 View specimen

M3#732 UFAC 2620, distal region of a right femur. Type: "3D_surfaces" doi: 10.18563/m3.sf.732   state:published

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Neoepiblema horridula UFAC 2737 View specimen

M3#733 UFAC 2737, proximal region of right femur. Type: "3D_surfaces" doi: 10.18563/m3.sf.733   state:published

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Neoepiblema horridula UFAC 3202 View specimen

M3#734 UFAC 3202, right tibia, missing the proximalmost and distal portions. Type: "3D_surfaces" doi: 10.18563/m3.sf.734   state:published

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Neoepiblema horridula UFAC 3212 View specimen

M3#735 UFAC 3212, left astragalus. Type: "3D_surfaces" doi: 10.18563/m3.sf.735   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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This contribution contains 3D models of extinct rodents Dinomyidae from Miocene and Quaternary of Brazil. The Miocene specimens that were digitalized include the holotypes of Potamarchus adamiae, Pseudopotamarchus villanuevai, and Ferigolomys pacarana collected in the Solimões Formation (Upper Miocene), northern Brazil. The Quaternary specimens are the holotype and paratype of Niedemys piauiensis, found in Upper Pleistocene deposits from northeast Brazil. 

Potamarchus adamiae UFAC-CS 011 View specimen

M3#410 UFAC-CS 011 – holotype, palatal region of the skull with cheek teeth Type: "3D_surfaces" doi: 10.18563/m3.sf.410   state:published

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Potamarchus adamiae UFAC-CS 043 View specimen

M3#411 UFAC-CS 043, left dentary with cheek teeth Type: "3D_surfaces" doi: 10.18563/m3.sf.411   state:published

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Pseudopotamarchus villanuevai UFAC 4762 View specimen

M3#412 UFAC 4762 – holotype, incomplete right maxilla with cheek teeth Type: "3D_surfaces" doi: 10.18563/m3.sf.412   state:published

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Ferigolomys pacarana UFAC 6460 View specimen

M3#413 UFAC 6460 – holotype, palatal region of the skull with cheek teeth Type: "3D_surfaces" doi: 10.18563/m3.sf.413   state:published

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Drytomomys sp. UFAC 2742 View specimen

M3#414 UFAC 2742, right dentary with cheek teeth Type: "3D_surfaces" doi: 10.18563/m3.sf.414   state:published

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Niedemys piauiensis FUMDHAM 113-146365-2 View specimen

M3#418 FUMDHAM 113-146365-2 - holotype, upper right tooth Type: "3D_surfaces" doi: 10.18563/m3.sf.418   state:published

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Niedemys piauiensis FUMDHAM 113-145304-2 View specimen

M3#419 FUMDHAM 113-145304-2 - paratype, left lower molar Type: "3D_surfaces" doi: 10.18563/m3.sf.419   state:published

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