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†Annulocolumnus Donovan 1989
urn:lsid:organismnames.com:name:773856
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†Annulocolumnus Donovan 1989
Donovan 1989. Pelmatozoan columnals from the Ordovician of the British Isles. Part 2. Palaeontographical Society Monographs (London), 142No. 580 1989: 69-114