This represented a significant deviation from Upchurch's 1995 phylogeny as well as much of the traditional understanding of neosauropod taxonomy. Conventional cladistics had long considered titanosaurs and diplodocoids to be more closely related, with brachiosaurids and camarasaurids together forming a sister taxon.
This indicated a substantial departure from Upchurch's 1995 phylogenetic analysis as well as many traditional views on neosauropod classification. Conventional cladistics had previously grouped titanosaurs and diplodocoids more closely together, with brachiosaurids and camarasaurids forming a sister taxon.