The Hidden Lake Formation is a Late Cretaceous geologic formation in Antarctica. The sandstones and siltstones of the formation were deposited in a deltaic environment.
Indeterminate megalosaur remains have been recovered from it.Weishampel, et al. (2004). "Dinosaur distribution" pp. 517–607. in Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. . " pp. 517–607. Also many plant fossils and ichnofossils of Planolites sp. and Palaeophycus sp. have been found in the formation.Hidden Lake at Fossilworks.org
Paleofauna Megalosauroidea indet. Palaeophycus sp. Planolites sp.
Flora
Antarctoxylon mixai Dicotylophyllum Elatocladus cf. heterophylla Lygodium sp. Microphyllopteris sp.
See also List of dinosaur-bearing rock formations List of stratigraphic units with indeterminate dinosaur fossils List of fossiliferous stratigraphic units in Antarctica Snow Hill Island Formation
References
Further reading V. D. Barreda, S. Palamarczuk, and F. Medina. 1999. Palinología de la Formación Hidden Lake (Coniaciano-Santoniano), Isla James Ross, Antártida. Revista Española de Micropaleontología (31)53-72 R. E. Molnar, A. L. Angriman, and Z. Gasparini. 1996. An Antarctic Cretaceous theropod. Memoirs of the Queensland Museum 39(3):669-674 D. Néraudeau, A. Crame, and M. Kooser. 2000. Upper Cretaceous echinoids from James Ross Basin, Antarctica. Géobios 33(4):455-466