Camptosaurus aphanocetes



A newly described Camptosaurus species, on display at the Carnegie Museum for over 75 years

Despite its short forelimbs, Camptosaurus was most likely quadrupedal

Camptosaurus is Greek for “flexible back”

William D. Berry's artwork depicting a foraging Camptosaurus group.
William D. Berry’s artwork depicting a foraging Camptosaurus group.

Camptosaurus aphanoecetes is a species of ornithopod dinosaur from the Late Jurassic of North America, found in the Morrison Formation. Its bones are exposed on the quarry wall at Dinosaur National Monument. The most complete, known, Camptosaurus skeleton was excavated by Earl Douglass and is now on display at the Carnegie Museum of Natural History, Pittsburgh, PA.

Camptosaurus aphanoecetes is a new species of Camptosaurus, described by Ken Carpenter in 2008. The species name aphanoecetes comes from Greek aphanoe- meaning “hidden”, and -cetes, meaning “to dwell”. This name refers to the fact that a new species had been “hidden in plain sight” at the Carnegie Museum for over seventy-five years as a mounted skeleton (Carpenter, 2008).

Specimens of Camptosaurus aphanocetes s from the Carnegie Quarry:

Photos to be added as they come available

Carpenter, Kenneth and Wilson, Yvonne. 2008. A New Species of Camptosaurus (Ornithopoda: Dinosauria) from the Morrison Formation (Upper Jurassic) of Dinosaur National Monument, Utah, and a Biomechanical Analysis of Its Forelimb. Annals of Carnegie Museum. 76(4): 227-263. Link to publication

Chure, D.J., Turner, C.E. and Peterson, F. 1994. An embryo of Camptosaurus from the Brushy Basin Member (early to middle Tithonian) of the Morrison Formation in Dinosaur National Monument. in: Carpenter, K., Hirsch, K.F., and Horner, J.R. (eds.) Dinosaur Eggs and Babies. Cambridge University Press, N.Y.C., N.Y.: 298-311. Link to publication

Gilmore, C.W. 1925b. Osteology of ornithopodous dinosaurs from the Dinosaur National Monument, Utah. Part I. On a skeleton of Camptosaurus medius Marsh. Part II. On a skeleton of Dryosaurus altus Marsh. Part III. On a skeleton of Laosaurus gracilis Marsh. Memoirs of the Carnegie Museum X: 385-409.

Information to be added as it becomes available

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