O EOL GIC G A D D A E D C E I H C I L E O S F u n 2 d 6 la serena octubre 2015 ada en 19 Taxonomic identity of the Interatheriidae SGO.PV.4004 and SGO.PV.4005, and rectification of collection numbering of Caraguatypotherium munozi (Notoungulata; Mesotheriidae) Karina E. Buldrini1, 2*, Enrique Bostelmann1 and Sergio Soto-Acuña1, 3 1 Red Paleontológica U-Chile. Laboratorio de Ontogenia y Filogenia, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Santiago, Chile. 2 Laboratorio de Zoología de Vertebrados, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile. Las Palmeras, 3425, Santiago, Chile. 3Área de Paleontología, Museo Nacional de Historia Natural, interior Quinta Normal s/n, Santiago, Chile. *Contact email:
[email protected] Abstract. During the Second Symposium about Tertiary of mentioned by Suárez et al. (1990) were rediscovered, Chile, Suárez and colleagues introduce new details about revealing the conflict in the catalog numbering of the stratigraphy, geochronology and paleontological content SGO.PV.4004. In order to rectify this situation, the materials of fluvio-volcanoclastic deposits of the Cura-Mallín involved were studied thoroughly, and the results are Formation near Ralco and Lonquimay (Suárez et al., 1990). presented in this work. There, fragmentary remains of a small size fossil ungulate collected at Puente Tucapel were classified as cf. Protypotherium, and housed at the Vertebrate Paleontology collection in the National Natural History Museum under the 2 Geological Context numbers SGO.PV.4004 and SGO.PV.4005. Subsequently, different authors use the same collection number The specimens under investigation came from the area (SGO.PV.4004) for distinct materials exhumed in the Arica surrounding Lonquimay, Araucanía region (Figure 1), in and Parinacota Region, actually comprising the holotype of exposures outcropping on the east bank of the Biobío River Caraguatypotherium munozi (Flynn et al., 2005).