This taxon is considered subjective synonym of
of the valid taxon Diplodocus
according to the Paleobiology Database.
See the page for Diplodocus →
Bibliography
Original description
D. D. Gillette. 1991. Seismosaurus halli, gen. et sp. nov., a new sauropod dinosaur from the Morrison Formation (Upper Jurassic/Lower Cretaceous) of New Mexico, USA. Journal of Vertebrate Paleontology 11(4):417-433
DOI ↗