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Ptychochilus Yu Wen 1977

urn:lsid:organismnames.com:name:4473614

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Ptychochilus Yu Wen 1977

Yu Wen 1977. Cretaceous and early Tertiary non-marine gastropods from south China with their stratigraphical significance. Acta Palaeontologica Sinica 16(2) 1977: 191-213,3 pp.