Morphological studies on the Echinoidea Holectypoida and their allies. X. On Apatopygus gen. nov. and the affinities of some recent Nucleolitoida and Cassiduloida

H L Hawkins

Published in Geological Magazine, in 1920, in volume 57, issue 675, pages 393-401

Date published:1920

DOI: 10.1017/s0016756800106600
BHL: 30549163
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