Figure 54. Stratigraphic distribution of selected palynomorphs identified in samples from the Gasbuggy core (Figure 1); modified from
Tschudy (1973, figure 3). Hiatus at the Fruitland Formation-Ojo Alamo Sandstone (Cretaceous-Tertiary) contact is clearly indicated by the termination of the first 11 palynomorphs (except for probably reworked specimens) at the contact and the emergence of five new species just below or above the contact. Tick marks along left side of diagram show levels of sample collections.