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†Filisphaeridium bifurcatum Thusu 1973
urn:lsid:organismnames.com:name:2192219
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814
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†Filisphaeridium bifurcatum Thusu 1973
Thusu 1973. Acritarchs of the Middle Silurian Rochester Formation of southern Ontario. Palaeontology, 16(4) 1973: 799-826