Title: Upper Cretaceous and Tertiary formations of the western part of the San Juan Basin, Colorado and New Mexico
First published: 1924
Subjects: Fossil Plants, Geology, Geology, Stratigraphic, Plants, Fossil, Stratigraphic Geology
Places: Colorado, New Mexico
Time periods: Cretaceous, Tertiary
LC classification: QE75 .P9 no. 134