Author:
Uutela,A.;Tynni,R.
Year:
1991
Title:
Ordovician acritarchs from the Rapla borehole, Estonia
Reference:
Uutela,A. et al. (1991) Ordovician acritarchs from the Rapla borehole, Estonia Geological Survey of Finland, Bulletin # 353 P. 1- 135
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Genus Species Country(Region) From To
Aremoricanium Aremoricanium squarrosum USSR(Estonian SSR) Caradocian Ashgillian
Arkonia Arkonia concava sp. nov. USSR(Estonian SSR) Late Llanvirnian
Arkonia Arkonia semigranulata sp. nov. USSR(Estonian SSR) Middle Caradocian
Axisphaeridium Axisphaeridium timofeevii USSR(Estonian SSR) Llandeilian Early Caradocian
Axisphaeridium Axisphaeridium tricolumnelare USSR(Estonian SSR) Caradocian Ashgillian
Bacisphaeridium Bacisphaeridium bacifer USSR(Estonian SSR) Middle Ashgillian Late Ashgillian
Bacisphaeridium Bacisphaeridium granulatum sp. nov. USSR(Estonian SSR) Middle Ashgillian
Bacisphaeridium Bacisphaeridium saetosum sp. nov. USSR(Estonian SSR) Middle Ashgillian
Baltisphaeridium Baltisphaeridium accinctum USSR(Estonian SSR) Late Arenigian Llandeilian
Baltisphaeridium Baltisphaeridium aliquigranulum USSR(Estonian SSR) Middle Caradocian Ashgillian
Baltisphaeridium Baltisphaeridium annelieae USSR(Estonian SSR) Late Arenigian Llandeilian
Baltisphaeridium Baltisphaeridium bramkaense USSR(Estonian SSR) Late Llanvirnian Ashgillian
Baltisphaeridium Baltisphaeridium breviciliatum USSR(Estonian SSR) Early Llandoverian
Baltisphaeridium Baltisphaeridium brevispinosum USSR(Estonian SSR) Late Arenigian Llanvirnian
Baltisphaeridium Baltisphaeridium brevituberculatum USSR(Estonian SSR) Late Arenigian Llanvirnian
Baltisphaeridium Baltisphaeridium bystrentos USSR(Estonian SSR) Late Llanvirnian Ashgillian
Baltisphaeridium Baltisphaeridium cantabricum USSR(Estonian SSR) Late Ashgillian