Eocene Areoligeraceous Dinoflagellate Cysts of Taiwan

Three genera Areoligera, Cyclonephelium and Glaphyrocysta, the fossil dinoflagellate cysts of Areoligeraceae, obtained from Eocene sediments offshore of Keelung area in northern Taiwan are reported. One species of the genus Areoligera (Areoligera taiwaniana C. L. Shaw), two species of the genus Cyclonephelium (Cyclonephelium pengchiahsum C. L. Shaw sp. nov. and Cyclonephelium taiwanianum C. L. Shaw sp. nov.) and One species of the genus Glaphyrocysta (Glaphyrocysta microfenestrata (Bujak) Stover & Evitt) are described