A cretaceous (Cenomanian) flora from the Dakota Sandstone Formation near Westwater, Grand County, Utah contains an admixture of ferns and angiosperms. The ferns of this flora are representative of an older Jurassic-Wealden vegetational type, whereas the angiosperms are typical of the modern vegetational type. Species of Gleichenia and Matonidium and Astralopteris coloradica represent the dominant forms in this flora. The Westwater flora contains fourteen genera including nineteen species and one variety. New species described from this flora include Asplenium dakotensis, Coniopteris westwaterensis and Ilex serrata.
College and Department
Life Sciences; Plant and Wildlife Sciences
BYU ScholarsArchive Citation
Rushforth, Samuel R., "A Flora from the Dakota sandstone formation near Westwater, Grand County, Utah" (1970). Theses and Dissertations. 7972.
Botany, Utah, Grand County