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SMITHSONIAN MISCELLANEOUS COLLECTIONS
VOLUME 57, NUMBER 6
CAMBRIAN
GEOLOGY AND PALEONTOLOGY
II
No. 6.—MIDDLE CAMBRIAN BRANCHIOPODA,
MALACOSTRACA, TRILOBITA, AND
MEROSTOMATA
With Plates 24 to 34
BY
CHARLES D. WALCOTT
(Publication 2051)
CITY OF WASHINGTON
PUBLISHED BY THE SMITHSONIAN INSTITUTION
MARCH 13, 1912
