Apatosaurus louisae



Apatosaurus is the largest dinosaur of Carnegie Quarry, weighing over 30 tons

Apatosaurus was the first dinosaur collected from Carnegie Quarry

The first Apatosaurus skull was found at Carnegie Quarry

Apatosaurus is Greek for “deceptive reptile”

William D. Berry's artwork depicting an Apatosaurus in the rain.
William D. Berry’s artwork depicting an Apatosaurus in the rain.

Apatosaurus louisae is a species of sauropod dinosaur from the Late Jurassic of North America found in the Morrison Formation, and its remains are present on the Wall of Bones at Dinosaur National Monument. A skeleton of Apatosaurus louisae was the first dinosaur to be excavated at the quarry by Earl Douglass, and was found by eight vertebrae sticking out of the rock. It  included a complete skull which is now on display at the Carnegie Museum of Natural History, Pittsburg PA. Apatosaurus louisae grew to lengths of nearly 70 feet. Despite being shorter in length than its contemporary, Diplodocus, reconstructions depict Apatosaurus to be much heavier. The species is named after Andrew Carnegie’s wife Louise, Andrew was the founder of the Carnegie Museum of Natural History.

Specimens of Apatosaurus louisae from the Carnegie Quarry:

Photos to be added as they come available

Berman, D.S. and McIntosh, J.S. 1978. The skull and relationships of the Upper Jurassic sauropod dinosaur Apatosaurus (Reptilia: Saurischia). Bulletin of the Carnegie Museum of Natural History no. 8: 35pp.

Gilmore, C.W. 1936a. Osteology of Apatosaurus with special reference to specimens in the Carnegie Museum. Memoirs of the Carnegie Museum XI: 175-300.

McIntosh, J.S. 1995. Remarks on the North American sauropod Apatosaurus Marsh. In: Sun, A.L. and Wang, Y.Q. (eds.) Sixth Symposium on Mesozoic Terrestrial Ecosystems and Biota, Short Papers. Chinese Ocean Press, Beijing: 119-123.

McIntosh, J.S. and Berman, D.S. 1975. Description of the palate and lower jaw of Diplodocus (Reptilia: Saurischia) with remarks on the nature of the skull of Apatosaurus. Journal of Paleontology 49(1): 187-199. Link to publication

Stevens, K.A. and Parrish, J.A. 2005. Digital reconstruction of sauropod and implications for feeding. in: Curry Rogers, K.A. and Wilson, J.A. (eds.) The Sauropods: Evolution and Paleobiology. University of California Press, Berkeley: 178-199. Link to publication

Stevens, K.A. and Parish, J.A. 1999. Neck posture and feeding habits of two Jurassic sauropod dinosaurs. Science 284: 798-800. Link to publication 

Steven, K.A. and Parrish, J.A. 2005. Neck posture, dentition, and feeding strategies in Jurassic sauropod dinosaurs. in: Tidwell, V. and Carpenter, K. (eds.) Thunder Lizards: The Sauropodomorph Dinosaurs. Indiana University Press, Bloomington: 212-232.

Tutken, T. 2011. The diet of sauropod dinosaurs; implications of Carbon isotope analysis on teeth, bones, and plants. in: Klein, N., Remes, K., Gee, C.T., and Sander, P.M. (eds.) Biology of the Sauropod Dinosaurs. Understanding the Life of Giants. Indiana University Press: 57-79.

Wilhite, D.R. 2003a. Biomechanical Reconstruction of the Appendicular Skeleton in Three North American Jurassic Sauropods. Ph.D. Dissertation, Louisiana State University, 225 pp. Link to publication

Wilhite, D.R. 2005. Variation in the appendicular skeleton of North American sauropod dinosaurs: taxonomic implications. in: Tidwell, V. and Carpenter, K. (eds.) Thunder Lizards: The Sauropodomorph Dinosaurs. Indiana University Press, Bloomington: 269-301. Link to publication

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