Two new Cretaceous fresh-water gastropods from Mongolia. American Museum novitates ; no. 437

Ping, Chi.Granger, Walter, 1872-1941.Central Asiatic Expeditions (1921-1930)2005-10-062005-10-061930http://hdl.handle.net/2246/43964 p. : ill. ; 23 cm.352893 bytesapplication/pdfen-USQL1 .A436 no.437, 1930Vivipara grangeriVivipara fusistomaViviparus -- MongoliaMesogastropoda -- MongoliaGastropoda -- MongoliaMollusks -- MongoliaTwo new Cretaceous fresh-water gastropods from Mongolia. American Museum novitates ; no. 437Fresh-water gastropods from Mongoliatext