Morphology of a specimen of Supersaurus (Dinosauria, Sauropoda) from the Morrison Formation of Wyoming, and a re-evaluation of diplodocid phylogeny

Abstract

A new specimen of Supersaurus vivianae is described, providing additional information about the osteology of Supersaurus. The single Supersaurus individual that the WDC quarry produced allows a reexamination of elements referred to Supersaurus from the Dry Mesa quarry. The osteology supports maintaining the generic distinction of Supersaurus. Phylogenetic evaluation finds a monophyletic Apatosaurinae containing [Apatosaurus + Supersaurus] + Suuwassea, and a monophyletic Diplodocinae containing [Diplodocus + Seismosaurus] + Barosaurus, although the generic distinction of Seismosaurus is not supported in the current analysis.

Cite

@article{lovelace-2007-morphology,
  author    = {Lovelace, David M. and Hartman, Scott A. and Wahl, William R.},
  title     = {{Morphology of a specimen of \textit{Supersaurus} (Dinosauria, Sauropoda) from the Morrison Formation of Wyoming, and a re-evaluation of diplodocid phylogeny}},
  journal   = {Arquivos do Museu Nacional, Rio de Janeiro},
  volume    = {65},
  number    = {4},
  pages     = {527--544},
  year      = {2007}
}