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†Helminthozyga undulata Hoare & Sturgeon 1978
urn:lsid:organismnames.com:name:30709
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856
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†Helminthozyga undulata Hoare & Sturgeon 1978
Hoare & Sturgeon 1978. The Pennsylvanian gastropod genera Cyclozyga and Helminthozyga and the classification of the Pseudozygopleuridae. Journal of Paleontology, 52(4) 1978: 850-858