The Dolores Formation is a geologic formation in Uruguay. The formation is dated to the Late Pleistocene-Early Holocene. Performing optically stimulated luminescence and thermoluminescence methods on sand samples from different locations within the formation produced ages between 32,230 ± 2,640 and 10,570 ± 990 years ago, while a set of calibrated radiocarbon dating based on organic soil, wood, and mammal teeth resulted in ages between 27,436 and 11,857 years ago.
Fossil content The following fossils have been reported from the formation:
Amphibians
Salientia +Genus Species FamilyLocalityMaterialNotes ImagesCeratophrys C. spCeratophrynidaeLimetas Creek Birds
Gruiformes +Genus Species FamilyLocalityMaterialNotes ImagesPhorusrhacidae indetIndeterminateCasil Quarry Perico Flaco CreekPsilopterus .P. sp.Curupí Creek
Mammals
Xenarthra +Genus Species FamilyLocalityMaterialNotes ImagesPropaopus P. sp DasypodidaeCasil Quarry Aparicio Creek Pampatherium P. typumPampatheriidaePanochthus GlyptodontidaeGlyptodon G. clavipesGlyptodontidaeAparicio Creek El Caño Creek (lower level)DoedicurusGlyptodontidaeNeuryurus N. spGlyptodontidaeCasil QuarryLestodonL. armatusMylodontidaeCasil Quarry Limetas Creek
El Caño Creek (lower level)Catonyx C. cuvieriMylodontidaeAparicio Creek El Caño Creek (upper level) Chileno Creek Arenal Chico Creek
Proboscidea +Genus Species FamilyLocalityMaterialNotes ImagesNotiomastodon N. platensisGomphotheriidaeCasil Quarry Santa Regina Campo Viñoles
Meridiungulata +Genus Species FamilyLocalityMaterialNotes ImagesToxodon T. cf. platensisToxodontidaeCasil Quarry Limetas CreekMacrauchenia M. patagonicaMacraucheniidaeCasil Quarry Aparicio Creek Neolicaphrium N. recensProterotheriidaeBahía de Colonia
Perissodactyla +Genus Species FamilyLocalityMaterialNotes ImagesHippidion sp.EquidaeEquussp. +Genus Species FamilyLocalityMaterialNotes ImagesHemiaucheniasp.CamelidaeOzotocerusO. bezoarticusCervidaeCasil Quarry
Rodentia +Genus Species FamilyLocalityMaterialNotes ImagesMyocastorsp.EchimyidaeCtenomys C. kraglievichiCtenomyidaeLimetas CreekDolichotis D cf. patagonumCaviidaePilatos Creek GaleaG. ortodontaCaviidaeEl Caño Creek (lower level) Lagostomus L. spChinchillidaeEl Caño Creek (lower level)
Carnivora +Genus Species FamilyLocalityMaterialNotes ImagesSmilodon S. populatorFelidaeLimetas CreekS. fatalisPanthera P. oncaFelidaeEl Caño Creek (lower level)Dusicyon D. avusCanidaeBeach of El Caño CreekCerdocyonC. thousCanidaeBeach of El Caño Creek Catonyx cuvieri Hippidion Lestodon armatusLestodon armatus at Fossilworks.org Macrauchenia Panochthus tuberculatusPanochthus tuberculatus at Fossilworks.org Smilodon fatalis Smilodon populator Notiomastodon platensis Toxodon
See also List of fossiliferous stratigraphic units in Uruguay
References
Bibliography