The Claggett Shale is a geological formation in Montana whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. .

Vertebrate paleofauna Hesperornis altus? - "Tibiotarsus and vertebra.""Table 11.1," in Weishampel, et al. (2004). Page 215. (possibly from the Judith River Formation) Hesperornis montana cf. Maiasaura Tyrannosauridae indet.

See also

List of dinosaur-bearing rock formations

References