A complete titanosaur femur from west texas with comments regarding hindlimb posture

Steven L. Wick, Thomas M. Lehman

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

An isolated titanosaur femur recovered from the Javelina Formation (Maastrichtian) of Big Bend National Park, Texas is the most complete example yet reported from North America. The specimen is likely referable to Alamosaurus sanjuanensis, the only titanosaur thus far known from Upper Cretaceous strata in North America, but cannot be attributed with certainty to that taxon. Compared to femora from other titanosaurs, the specimen has a relatively reduced abductor crest, a less elevated femoral head, and a distal joint surface that is orthogonal to the long axis of the shaft. These differences suggest that the Big Bend femur pertains to a species where hindlimb stance was closer to vertical, and with a comparatively narrower gait than other titanosaurids.

Original languageEnglish
Pages (from-to)39-44
Number of pages6
JournalCretaceous Research
Volume49
DOIs
StatePublished - May 2014

Keywords

  • Alamosaurus
  • Hindlimb
  • Late Cretaceous
  • Sauropod
  • Texas

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