PLATE CI. 



Page. 



Fig. 1. Aualia wrightu n. sp. Fossil Forest 744 



2. Cissites HAGUiil n. sp. Fossil Forest 741 



3. Aualia skrrulata n. sp. Yellowstone River below Elk Creek 747 



4,5. Zizyphus serrulata Ward. Yellowstone River below Elk Creek 740 



6. Credxeuia? pachyphylla n. sp. Yellowstone River below Elk Creek 742 



7. Pai.iurus coi.ombi Heer. Head of Tower Creek 740 



842 



