DORYPGE (KOOTENIA) DAWSONI Walcott
Fig. 9. A large specimen. Not very abundant, but often mistaken for Neolenus serratus.
DESCRIPTION OF PLATE IV.
ZACANTHOIDES SPINOSUS (Walcott)
Fig. 1. A large specimen partially crushed in the shale. A common species.
BATHYURISCUS ROTUNDATUS (Rominger)
Fig. 2. The average size of this species is about one-half that of this figure. It is quite abundant.
NEOLENUS SERRATUS (Rominger)
Fig. 3. A common species.
OGYGOPSIS KLOTZI (Rominger)
Fig. 4. This is the largest and most abundant trilobite in the fossil bed.