Two teeth of Lavanify were discovered in 1995-1996 during joint expeditions of the State University of New York, Stony Brook University, and the University of Antananarivo to the late Cretaceous (mostly Maastrichtian, about 71 to 66 million years ago [mya]) Maevarano Formation of northwestern Madagascar [REF].
Gondwanatheres are a small group of mammals of uncertain phylogenetic affinities known from the late Cretaceous to the Eocene (~56-34 mya) of the Gondwanan continents, known only from teeth and a few lower jaws.