Page:Field Notes of Junius Henderson, Notebook 2.pdf/52

forms steep, much dissected, bluffs, which give to the reservoir its name. The dip changes rapidly at the latter place. Along the ridge from Terry Lake Terry Lake, Colorado northward the dip is easterly and only about 5˚. Then it changes to N and then N by NW (remains about 4˚ or 5˚) and swings around to the north end of Rocky Ridge Reservoir No. 1 Rocky Ridge Reservoir No. 1, the strike changing in response to change of dip. There is a series of reservoirs about which large flocks of ducks and numerous large gulls were flying. The sandstone, as at Fossil Ridge, contains large numbers of Inoceramus oblongus Inoceramus oblongus and some of the other Inoceramus Inoceramus found at Fossil Ridge, but I only saw two or three Pinna lakesii Pinna lakesii and Baculites compressus Baculites compressus, one Callista Callista, one Scaphites nodosus Scaphites nodosus, and a very few Ostrea cf. O. inornata Ostrea. Anomia raetiformis Anomia raetiformis is common