Reguero, Marcelo Alfredo Final Gondwana breakup: The Paleogene South American native ungulates and the demise of the South America-Antarctica land connection - Amsterdam Elsevier December 2014 - pp. 400-413 ilus. Subjects--Topical Terms: ANTARTIDAMAMMALIAPALEOBIOGEOGRAFIAPALEOGENOUNGULATA Subjects--Geographic Terms: AMERICA DEL SURARGENTINA Subjects--Index Terms: GONDWANA