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Visbysphaera gotlandica
Visbysphaera gotlandica (Eisenack, 1954) Kiryanov, 1978
Originally Hystrichosphaeridium, subsequently Baltisphaeridium (an acritarch genus), thirdly Multiplicisphaeridium (an acritarch genus), fourthly (and now) Visbysphaera.
Tax. sr. synonym of the acritarch species Baltisphaeridium peltatum Cramer, 1966, according to Cramer, 1970. This combination was not validly published in Lister, 1970 since that author did not clearly use the name Visbysphaera gotlandica.
Holotype: Eisenack, 1954, pl.1, fig.5
Age: Silurian (Late Llandovery)
Originally Hystrichosphaeridium, subsequently Baltisphaeridium (an acritarch genus), thirdly Multiplicisphaeridium (an acritarch genus), fourthly (and now) Visbysphaera.
Tax. sr. synonym of the acritarch species Baltisphaeridium peltatum Cramer, 1966, according to Cramer, 1970. This combination was not validly published in Lister, 1970 since that author did not clearly use the name Visbysphaera gotlandica.
Holotype: Eisenack, 1954, pl.1, fig.5
Age: Silurian (Late Llandovery)