Cambrian brachiopoda: genera Iphidea and Yorkia, with descriptions of new species of each and of the genus Acrothele.

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Bibliographic Details
Main Author: Walcott, Charles D. 1850-1927.
Format: Book
Language:English
Published: Washington, Govt. pr. off., 1897.
Series:Geological pamphlets. Paleontology ; 417-464.
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Description
Item Description:From the Proceedings of the United States national museum, vol.xix...
No.1120.
At head of title: Smithsonian institution...
[nn. ssp.: I. superba, logana, pealei, crenistria, alabamaensis; Yorkia (n.g.): Wanneri, ? washingtonensis; A. decipiens, bellula.]
Physical Description:707-718, 2 plates 25 cm.