Geological Range: Last occurrence (top): at top of Paleogene Period (100% up, 23Ma, in Aquitanian stage). Data source: Total of ranges of the species in this database First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Gorbunov, V. S. (1979a). Radiolyarii srednego i verkhnego eotsena Dneprovsko-Dnetskoy bladiniyi. [Radiolaria of the middle and upper Eocene of the Dnieper-Donets Basin.]. Akademiya Nauk Ukrainoskoy SSR, Institut Geologicheskikh Nauk (Naukov Dumka) Kiev. 1-164. gsO
Conoactinomma compiled by the radiolaria@mikrotax project teamviewed: 21-6-2025