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†Clarella Howell 1933
urn:lsid:organismnames.com:name:251546
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†Clarella Howell 1933
Howell 1933. The classifica-tion of the Trilobite subfamily, Centropleurinae. Meddelelser fra Dansk Geologisk Forening Bd, 8(3) 1933: pp. 215-219