original |
Late Tithonian |
Valanginian |
California |
Warren,J.S. Dinoflagellates and acritarchs from the Upper Jurassic and Lower Cretaceous rocks on the west side of the Sacramento Valley, California. |
1967 |
original |
Tithonian |
Valanginian |
California |
Albert,N.R. et al. Lacrymodinium, n.gen., a Gonyaulacoid dinoflagellate with Intercalary archeopyle from the Jurassic and Early Cretaceous of California and Alaska |
1986 |
original |
Middle Callovian |
Kimmeridgian |
Alaska |
Albert,N.R. et al. Lacrymodinium, n.gen., a Gonyaulacoid dinoflagellate with Intercalary archeopyle from the Jurassic and Early Cretaceous of California and Alaska |
1986 |