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†Segmentocolumnus Donovan 1986
urn:lsid:organismnames.com:name:621714
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†Segmentocolumnus Donovan 1986
Donovan 1986. Pelmatozoan columnals from the Ordovician of the British Isles. Palaeontographical Society Monographs (London), 138No. 568 1986: 1-68