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, v. 20, p. 123-134.
Molnar, R. E., 1980, An albertosaur from the Hell Creek Formation of Montana: Journal of Paleontology, v. 54, p. 102-108.
Sloan, R. E. et al., 1986, Gradual dinosaur extinction and simultaneous ungulate radiation in the Hell Creek Formation: Science, v. 232, p. 629-633.
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