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†Helosphaeridium varispinosum Vutela & Tynni 1991
urn:lsid:organismnames.com:name:928332
Microreference
70
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†Helosphaeridium varispinosum Vutela & Tynni 1991
Vutela & Tynni 1991. Ordovician acritarchs from the Rapla borehole, Estonia. Geological Survey of Finland Bulletin, 353 1991: 1-165