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Notoungulate faunas of north-western Argentina: new findings of early-diverging forms from the Eocene Geste Formation
New material is described that includes Notoungulata of generalized morphology, two morphotypes of basal typotherians, and two interatheriid taxa (including Antofagastia turneri gen. et sp. nov.) that increase the variety of groups and provide new information about previously known taxa for this unit.
Redescription of the argyrolagid Microtragulus bolivianus (Metatheria, Polydolopimorphia, Bonapartheriiformes) based on new remains from Northwestern Argentina
Fil: Babot, Maria Judith. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico - Tucuman. Unidad Ejecutora Lillo; Argentina
Anatomical and Systematic Study of Proximal Tarsals of Ungulates from the Geste Formation (Northwestern Argentina)
Abstract. Over the last decades, Paleogene outcrops in northwestern Argentina have been yielding abundant information about the evolution of South American mammals during the early Cenozoic. This
Diversity, Affinities and Adaptations of the Basal Sparassodont Patene (Mammalia, Metatheria)
Sparassodonts were the main mammalian predators during most of the Cenozoic in South America. The lower Eocene Itaborai Basin/ Formation includes the second oldest fossil records of this group in
New Small Bunodont Metatherian from the Late Eocene of the Argentinean Puna
The overall morphology of Apeirodon more closely resembles Glasbius (particularly G.twitchelli) than any other Cretaceous-Paleogene American metatherian, supporting the largely accepted hypothesis proposing a common origin for some North and South American meetatherian lineages.
A Late Miocene Argyrolagidae (Mammalia, Metatheria, Bonapartheriiformes) from Northwestern Argentina
The new record reported here, the third known of Microtragulus from northwestern Argentina, broadens the geographic range of the genus, known from the Atlantic coast of Argentina and several localities of the Andean highlands and the foothills of the cordilleran range.
Postcranial remains of basal typotherian notoungulates from the Eocene of northwestern Argentina
Anatomical and systematic aspects of proximal tarsal bones recovered from the Lower and Upper Lumbrera formations in northwestern Argentina are analyzed to provide functional proxies for paleoecological reconstructions to be applied to the study of the early radiation of these notoungulate faunas.