| original |
Early Berriasian |
|
California |
Helenes,J. et al. Morphological variations among species of the fossil dinoflagellate genus Gonyaulacysta. |
1997 |
| details |
Late Tithonian |
Valanginian |
California |
Helenes,J. et al. Morphological variations among species of the fossil dinoflagellate genus Gonyaulacysta. |
1997 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |
| details |
Tithonian |
|
Australia(W.Australia) |
Riding,J.B. et al. Marine microplankton from the Late Jurassic (Tithonian) of the north-west Australian region. |
2001 |