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†Protaspis (Eucyclaspis) Denison 1970

urn:lsid:organismnames.com:name:2297651

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†Protaspis (Eucyclaspis) Denison 1970

Denison 1970. Revised classification of Pteraspididae with description of new forms from Wyoming. Fieldiana (Geol.), 20 1970: 1-41