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†Opsiosoryctocephalus Sundberg 1994
urn:lsid:organismnames.com:name:1064810
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33
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†Opsiosoryctocephalus Sundberg 1994
Sundberg 1994. Corynexochida and Ptychopariida (Trilobita, Arthropoda) of the Ehmaniella Biozone (Middle Cambrian), Utah and Nevada. Contributions in Science (Los Angeles), 446, 12 August 1994: 1-137