Fossil Freshwater 'Mollusks from Oregon 



gonensis not so common. Material is firmly cemented together but shells come, 

 out fairly well preserved. 



208. Snake River Valley, Oregon. Pliocene. Contains Valvata oregonensis, 

 Paraphotyx packardi, Planorbis scdbiosus and numerous Ostracod shells firmly 

 cemented together with sand and shell fragments and pieces of lava rock. 



209. Warner Lake, Oregon. Plestocene? Hard calcareous cement, the 

 shells of which have been dissolved away. Contains casts or imprints of Valvata 

 oregonensis, Parapholyx packardi, Pisidium p., Vorticifex new species, Vorti- 

 cifex, cf. binneyi and Lanx moribundus. 



210. Warner Lake, Oregon. Pleistocene! Well preserved fossils, toughly 

 cemented together with careareous deposit. Contains Valvata oregonensis, 

 Parapholyx packardi, Vorticifex condoni, Vorticifex binneyi, Paludestrina 

 micrococcus, Pisidium sp., Carinifex sp., Lanx moribundus. 



211. Between Crooked River and Harney Lake, Oregon. Eocene* Con- 

 tains Viviparus. Material consists of shells and fragments thoroughly crushed, 

 compressed and cemented. 



212. Warner Lake, Oregon. Pliocene. Well preserved fossils in loose 

 sandy cement. Contains Valvata oregonensis, Parapholyx packardi, Lanx sp., 

 Pisidium sp., Planorbis scdbiosus, Paludestrina micrococcus, Vorticifex condoni 

 and Carinifex (?) sp. 



213. Warner Lake, Oregon. Pliocene. Well preserved shells loosely ce- 

 mented together. Contains Valvata oregonensis, Parapholyx packardi and a 

 Pisidium, 



214. 215, 216. Lake County, southeastern Oregon. Pliocene. Contains 

 Valvata oregonensis, Parapholyx packardi and the huge costate Vorticifex. 

 Matrix is a firm cement and shells are represented by casts and imprints. 



217. Lake County, southeastern Oregon. Contains Lanx p. and two other 

 species of Gastropods which cannot be determined. The material is a hard 

 limestone, brown in color, the shells being preserved as casts only. 



218. Lake County, Oregon. Pliocene. Well preserved shells loosely ce- 

 mented together. Contains Valvata oregonensis, Parapholyx packardi and a 

 Pisidium. 



219. Warner Lake, Oregon. Pleistocene! Hard calcareous cement, the. 

 shells of which have been dissolved away in large part. Contains casts and 

 molds of Valvata oregonensis, Parapholyx packardi, Pisidium sp., Vorticifea 

 new species and Vorticifex e'f. binneyi, Lanx. 



Transmitted July 13, 1922 Issued August 29, 1922 



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