A new specimen of Torvosaurus tanneri originally collected by Elmer Riggs

Michael Hanson, Peter J. Makovicky

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


A new specimen of the theropod dinosaur Torvosaurus tanneri discovered by Elmer Riggs in 1899 in the Freezeout Hills of Wyoming and held in the Field Museum of Natural History is described. This specimen demonstrates that unreported material of this species has been present in museum collections 80 years prior to the species' scientific description and it likely represents the first non-dental material of this species to be collected. This material comprises parts of the left foot and right hand, including phalanges which were previously unknown for Torvosaurus, and substantiates the possibility that other Torvosaurus material may be undiscovered in museum collections. Its occurrence in a multitaxon quarry is consistent with other skeletal finds of Torvosaurus, all or most of which occur in association with other, more common Morrison dinosaur taxa.

Original languageEnglish (US)
Pages (from-to)775-784
Number of pages10
JournalHistorical Biology
Issue number6
StatePublished - Nov 1 2014
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2013 Taylor & Francis.


  • Late Jurassic
  • Megalosauridae
  • Morrison Formation
  • Theropoda
  • dinosaur


Dive into the research topics of 'A new specimen of Torvosaurus tanneri originally collected by Elmer Riggs'. Together they form a unique fingerprint.

Cite this