The turnover of continental planktonic diatoms near the middle/late Miocene boundary and their Cenozoic evolution
Fig 6
Comparison among geologic ranges of continental planktonic diatoms, eustatic sea-level changes and global climate changes.
The geologic ranges of continental planktonic diatoms are modified from [4]. Cyclotelloids includes Stephanodiscaceae genera excepting Cyclostephanos, Stephanodiscus and Mesodictyon. Two eustatic curves (righ [48]; left [49]) have been calibrated to a recent geological time scale by [48]. Global climate changes are shown by a benthic foraminiferal δ18O record [50]. The chronostratigraphic chart follows [51].