A juvenile Ornithomimus Antiquus ( Dinosauria: Theropoda: Ornithomimosauria), from the Upper Cretaceous Kirtland Formation (De-na-zin Member), San Juan Basin, New Mexico
Abstract
A tibia of a juvenile theropod, from the Kirtland Formation of the Alamo Wash region, San Juan Basin, New Mexico, bears a distinctive cnemial crest and is identified as Ornithomimus antiquus. The diagnosis of 0. antiquus is expanded to include this feature, but a comprehensive revised diagnosis of this dinosaur is deferred to a more comprehensive study. Ornithomimus velox and 0. edmontonicus are junior subjective synonyms of 0. antiquus as there are no morphological features that distinguish them from one another.
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Recommended citation
- Sullivan, Robert M., 1997, A juvenile Ornithomimus Antiquus ( Dinosauria: Theropoda: Ornithomimosauria), from the Upper Cretaceous Kirtland Formation (De-na-zin Member), San Juan Basin, New Mexico, in: Mesozoic geology and paleontology of the Four Corners Region, Anderson, Orin J.; Kues, Barry S.; Lucas, Spencer G., New Mexico Geological Society, Guidebook, 48th Field Conference, pp. 249-253. https://doi.org/10.56577/FFC-48.249