The Hell Creek Formation and the Cretaceous-Tertiary boundary in the northern Great PlainsJoseph Herbert Hartman, Kirk R. Johnson, Douglas J. Nichols · First published 2002Open the Tome
Palynostratigraphy in relation to sequence stratigraphy, Straight Cliffs Formation (Upper Cretaceous), Kaiparowits Plateau, UtahDouglas J. Nichols · First published 1996Open the Tome
Palynostratigraphy of the Tullock Member (lower Paleocene) of the Fort Union Formation in the Powder River Basin, Montana and WyomingDouglas J. Nichols · First published 1992Open the Tome
Palynology of the Currant Creek and Mesaverde formations, in the Currant Creek-Duchesne River area, Duchesne and Wasatch Counties, UtahDouglas J. Nichols · First published 1986Open the Tome
Palynology in relation to depositional environments of lignite in the Wilcox group (early Tertiary) in TexasDouglas J. Nichols · First published 1970Open the Tome
