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†Parakoptura Guo & Duan 1978
urn:lsid:organismnames.com:name:680241
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448
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†Parakoptura Guo & Duan 1978
Guo & Duan 1978. Cambrian and Early Ordovician trilobites from northeastern Hebei and western Liaoning. Acta Palaeontologica Sinica, 17(4) 1978: 445-460