Full reference: G. Mayr, H. Alvarenga, and J. Clarke. 2011. An Elaphrocnemus−like landbird and other avian remains from the late Paleocene of Brazil. Acta Palaeontologica Polonica 56(4):679-684
Sister taxa: none
Type specimen: MN 4114−V, a limb element (Left coracoid). Its type locality is São José de Itaborai, which is in a Paleocene/Eocene fissure fill marl in Brazil.
Ecology: ground dwelling carnivore