Annual report of the United States Geological Survey to the Secretary of the Interior . ia like dira Roe. Yoldia Bp. Purpura n. sp. (?) Area microdonta Conr. Natica Bp. Area inezana Conr. !. North beach of Yaquina Bay: Nucula truncata Gabb. Natica s]>. undet. Lucina acutilineata Conr. 5. East shore of Yaquina Bay: Mytilus (large). Mya ]>ra>cisa Gold. Macoma. Area microdonta Conr. Callista. Yoldia impressa Conr. Lutricolaunda Conr. (?) Deutalium n. sp. Lucina. Trocbita filosa Gabb. Callicardia. (?) Plenrotoma like cireiuata Dall. Cardinal. Bnocinam like plecteum stm. Shaly sandstones b
Annual report of the United States Geological Survey to the Secretary of the Interior . ia like dira Roe. Yoldia Bp. Purpura n. sp. (?) Area microdonta Conr. Natica Bp. Area inezana Conr. !. North beach of Yaquina Bay: Nucula truncata Gabb. Natica s]>. undet. Lucina acutilineata Conr. 5. East shore of Yaquina Bay: Mytilus (large). Mya ]>ra>cisa Gold. Macoma. Area microdonta Conr. Callista. Yoldia impressa Conr. Lutricolaunda Conr. (?) Deutalium n. sp. Lucina. Trocbita filosa Gabb. Callicardia. (?) Plenrotoma like cireiuata Dall. Cardinal. Bnocinam like plecteum stm. Shaly sandstones begin near Yaquina, and according to Mr. Ander-son they are succeeded by massive beds to the eastward, along theYaquina River. In a railroad cut at Rocky Point, -i miles east of thetown, dark shales appear and contain many calcareous concretions, inwhich fossils were found: Nucula conradi Week. Cardiutn modi-slum Ad. anil Roe. Modiola Bp. Lucina acutilineata Conr. Tellina arctata Conr. Crepidula pra-rnpta Conr. Macoma sp. Dolium petrosum angustifrons MIOCENE. 475 It appears that the sandstone just referred to lies beneath the shalesof the coast and overlies those of Eocky Point. This sandstone, so faras can be judged from what is already known of its position, is possiblythe one exposed in the Yaquina coal field west of Depot Slough, wherein Jones Tunnel fragments of Mytilus, Macoma, Mactra, Yoldia, Den-talium, and Natica were found, and referred by Dall, with doubt, to theMiocene. To the eastward of Toledo there are a few outcrops before reachingPioneer, where massive sandstone is well exposed and extensivelyquarried. It is gray and rather soft, so as to be easily removed andcarved. The thickest blocks obtainable are about 10 feet. Otherlayers range as low as 4 feet, and they are separated by films ofclay. Near Pioneer the sandstones strike east and west, with a dip of 20°to the northward. Beyond Pioneer shales become more prominentagain, int
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