†unranked clade Lognkosauria Calvo et al. 2007 (titanosaurid)
Reptilia - Dinosauria - Titanosauridae
Full reference: J. O. Calvo, J. D. Porfiri, B. J. González Riga and A. W. A. Kellner. 2007. A new Cretaceous terrestrial ecosystem from Gondwana with the description of a new sauropod dinosaur. Anais da Academia Brasileira de Cięncias 79(3):529-541
Parent taxon: Titanosauridae according to B. J. González Riga et al. 2009
Sister taxa: Aeolosaurini, Antarctosaurinae, Antarctosaurus, Argyrosaurus, Atacamatitan, Baurutitan, Hypselosaurus, Laplatasaurus, Megaloolithidae, Microcoelus, Rinconsauria, Titanosaurinae, Titanosaurus, Trigonosaurus
Subtaxa: Drusilasaura, Futalognkosaurus, Mendozasaurus, Puertasaurus, Traukutitan
Ecology: ground dwelling herbivore