A large therian mammal from the Late Cretaceous of South America
Abstract Theria represent an extant clade that comprises placental and marsupial mammals.Here we report on the discovery of a new Late Cretaceous mammal from southern Patagonia, Patagomaia chainko gen.et sp.nov., represented by hindlimb and pelvic elements with unambiguous therian features.We estimate Patagomaia chainko attained a body mass of Home