A partial skeleton of the tyrannosaurid dinosaur Aublysodon from the Upper Cretaceous of New Mexico | Journal of Paleontology | Cambridge Core

A fragmentary tyrannosaurid skull and postcranial skeleton from the Kirtland Shale of northwestern New Mexico is the most complete specimen of a carnivorous dinosaur known from these strata. The specimen is identified as Aublysodon cf. A. mirandus on the basis of its narrow frontals, V-shaped frontal-parietal suture, and nondenticulate incisiform premaxillary tooth. The D-shaped cross section of the premaxillary tooth, rugose postorbital, well-developed footed pubis, and proximally constricted third metatarsal confirm the assignment of Aublysodon to the Tyrannosauridae. The limb bones are gracile and similar in proportions to those of Albertosaurus; however, the tibia and metatarsals are shorter relative to the femur. The distal end of the tibia exhibits a unique medial emargination not reported in other tyrannosaurids.

Armstrong-Ziegler, J. G. 1978. An aniliid snake and associated vertebrates from the Campanian of New Mexico. Journal of Paleontology, 52:480–483.Google Scholar

Armstrong-Ziegler, J. G. 1980. Amphibia and Reptilia from the Campanian of New Mexico. Fieldiana Geology, , 39 p.CrossRefGoogle Scholar

Bakker, R. T., Williams, M., and Currie, P. 1988. Nanotyrannus, a new genus of pygmy tyrannosaur from the latest Cretaceous of Montana. Hunteria, 1(5), 30 p.Google Scholar

Baltz, E. H., Ash, S. R., and Anderson, R. Y. 1966. History of nomenclature and stratigraphy of rocks adjacent to the Cretaceous-Tertiary boundary, western San Juan Basin, New Mexico. U.S. Geological Survey, , 23 p.Google Scholar

Brown, B. 1910. The Cretaceous Ojo Alamo Beds of New Mexico, with description of the new dinosaur genus Kritosaurus. American Museum of Natural History, Bulletin, 28:267–274.Google Scholar

Carpenter, K. 1982. Baby dinosaurs from the Late Cretaceous Lance and Hell Creek Formations and a description of a new species of theropod. University of Wyoming, Contributions to Geology, 20:123–134.Google Scholar

Carpenter, K.. Tyrannosaurids (Dinosauria) of Asia and North America. In Shen, Y. and Mateer, N. (eds.), International Symposium on Non-marine Cretaceous Correlation. China Ocean Press, Beijing.Google Scholar

Carpenter, K.. Variation in Tyrannosaurus rex. In Currie, P. J. and Carpenter, K. (eds.), Dinosaur Systematics: Perspectives and Approaches. Cambridge University Press, New York.CrossRefGoogle Scholar

Colbert, E. H. 1989. The Triassic dinosaur Coelophysis. Museum of Northern Arizona Bulletin 57, 160 p.Google Scholar

Currie, P. J. 1987. Theropods of the Judith River Formation of Dinosaur Provincial Park, Alberta, Canada, p. 52–60. In Currie, P. J. and Koster, E. H. (eds.), Fourth Symposium on Mesozoic Terrestrial Ecosystems. Tyrrell Museum of Palaeontology, .Google Scholar

Dong, Z. 1977. On the dinosaurian remains from Turpan, Xinjiang. Vertebrata Palasiatica, 15:59–66.Google Scholar

Gillette, D. D., Wolberg, D. L., and Hunt, A. P. 1986. Tyrannosaurus rex from the McRae Formation (Lancian, Upper Cretaceous), Elephant Butte Reservoir, Sierra County, New Mexico. New Mexico Geological Society Guidebook, :235–238.Google Scholar

Gilmore, C. W. 1916. Vertebrate faunas of the Ojo Alamo, Kirtland, and Fruitland formations. U.S. Geological Survey, , 98-Q:279–308.Google Scholar

Gilmore, C. W. 1919. Reptilian faunas of the Torrejon, Puerco, and underlying Upper Cretaceous formations of San Juan County, New Mexico. U.S. Geological Survey, Professional Paper 119, 71 p.Google Scholar

Gilmore, C. W. 1935. On the Reptilia of the Kirtland Formation of New Mexico, with descriptions of new species of fossil turtles. U.S. National Museum, Proceedings, 83:159–188.CrossRefGoogle Scholar

Huene, F. R. von. 1934. Ein neuer Coelurosaurier in der thuringischen Trias. Palaeontologische Zeitschrift, 16:145–170.CrossRefGoogle Scholar

Lawson, D. A. 1976. Tyrannosaurus and Torosaurus, Maestrichtian dinosaurs from Trans-Pecos Texas. Journal of Paleontology, 50:158–164.Google Scholar

Lehman, T. M. 1981. The Alamo Wash local fauna: a new look at the old Ojo Alamo fauna, p. 189–221. In Lucas, S., Rigby, K., and Kues, B. (eds.), Advances in San Juan Basin Paleontology. University of New Mexico Press, Albuquerque.Google Scholar

Lehman, T. M. 1985. Depositional environments of the Naashoibito Member of the Kirtland Shale, Upper Cretaceous, San Juan Basin, New Mexico. New Mexico Bureau of Mines and Mineral Resources, Circular, 195:55–79.Google Scholar

Leidy, J. 1856. Notices of remains of extinct reptiles and fishes, discovered by Dr. F. V. Hayden in the bad lands of the Judith River, Nebraska Territory. Academy of Natural Sciences of Philadelphia, Proceedings, 8:72–73.Google Scholar

Leidy, J. 1860. Extinct Vertebrata from the Judith River and Great Lignite formations of Nebraska. American Philosophical Society, Transactions, 11:139–154.CrossRefGoogle Scholar

Leidy, J. 1868. Remarks on a jaw fragment of Megalosaurus. Academy of Natural Sciences of Philadelphia, Proceedings, 20:197–200.Google Scholar

Lucas, S. G. 1981. Dinosaur communities of the San Juan Basin: a case for lateral variations in the composition of Late Cretaceous dinosaur communities, p. 337–393. In Lucas, S., Rigby, K., and Kues, B. (eds.), Advances in San Juan Basin Paleontology. University of New Mexico Press, Albuquerque.Google Scholar

Lucas, S. G., Mateer, N. J., Hunt, A. P., and O'Neill, F. M. 1987. Dinosaurs, the age of the Fruitland and Kirtland formations, and the Cretaceous-Tertiary boundary in the San Juan Basin, New Mexico. Geological Society of America, Special Paper, 209:35–50.CrossRefGoogle Scholar

Madsen, J. H. Jr. 1976. Allosaurus fragilis: a revised osteology. Utah Geological and Mineral Survey, Bulletin 109, 163 p.Google Scholar

Marsh, O. C. 1892. Notes on some Mesozoic vertebrate fossils. American Journal of Science, 44:171–176.CrossRefGoogle Scholar

Molnar, R. E. 1978. A new theropod dinosaur from the Upper Cretaceous of central Montana. Journal of Paleontology, 52:73–82.Google Scholar

Molnar, R. E., and Carpenter, K. 1989. The Jordan theropod (Maastrichtian, Montana, U.S.A.) referred to the genus Aublysodon. Geobios, 22:445–454.CrossRefGoogle Scholar

Osborn, H. F. 1906. Tyrannosaurus, Upper Cretaceous carnivorous dinosaur (second communication). American Museum of Natural History, Bulletin, 22:281–296.Google Scholar

Osborn, H. F. 1912. Crania of Tyrannosaurus and Allosaurus. American Museum of Natural History, Memoir, 1:1–30.Google Scholar

Padian, K. 1986. On the type material of Coelophysis Cope (Saurischia: Theropoda) and a new specimen from the Petrified Forest of Arizona (Late Triassic: Chinle Formation), p. 45–60. In Padian, K. (ed.), The Beginning of the Age of Dinosaurs. Cambridge University Press, London.Google Scholar

Paul, G. S. 1988. Predatory Dinosaurs of the World. Simon and Schuster, New York, 464 p.Google Scholar

Russell, D. A. 1970. Tyrannosaurs from the Late Cretaceous of western Canada. Canadian National Museum of Natural History, Publications in Paleontology 1, 30 p.Google Scholar

Sinclair, W. J., and Granger, W. 1914. Paleocene deposits of the San Juan Basin, New Mexico. American Museum of Natural History, Bulletin, 33:297–316.Google Scholar

Welles, S. 1984. Dilophosaurus wetherilli (Dinosauria, Theropoda) osteology and comparisons. Palaeontographica, Abt. A, 185:85–180.Google Scholar