Tuesday, 3 December 2013

Dromomeron romeri

Although a partial articulated skeleton is known, Dromomeron was mainly described through a femur. Much attention came from the fact that remains of this little bipedal animal have been found among those of dinosaurs indicating that the latter did not immediately replace their archosaurian relatives as previously thought. A second species of Dromomeron, D. gregorii has been recently (2009) described based on femurs from the Otis Chalk Quarry 3, Texas and the Placerias Quarry is near St. Johns, Arizona.

Dromomeron romeri
Irmis, Nesbitt, Padian, Smith, Turner, Woody and Downs, 2007
Meaning of generic name
Running Femur
Length: 1 m
Partial articulated skeleton and many femurs
Age and Distribution
Rio Arriba County, New Mexico, USA, lower portion of the Petrified Forest Member of the Upper Triassic Chinle Formation (Norian)
Dinosauromorpha Lagerpetidae
Further Reading
Irmis, R. B., S. J. Nesbitt, K. Padian, N. D. Smith, A. H. Turner, D. Woody, and A. Downs. 2007. A Late Triassic dinosauromorph assemblage from New Mexico and the rise of dinosaurs. Science 317:358–361.

S. J. Nesbitt, R. B. Irmis, W. G. Parker, N. D. Smith, A. H. Turner and T. Rowe. 2009. Hindlimb osteology and distribution of basal dinosauromorphs from the Late Triassic of North America. Journal of Vertebrate Paleontology 29(2):498-516
Image by Nobu Tamura (click to enlarge)
Dromomeron romeri:

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