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Geolocation
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Author - title
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Year
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| details | Early Ryazanian | Greenland | Hakansson,E. et al. Jurassic-Cretaceous boundary strata of the extreme Arctic (Peary Land, North Greenland). | 1981 | |
| details | Late Bathonian | Early Callovian | Canada(NWT,Franklin) | Davies,E.H. The dinoflagellate Oppel-zonation of the Jurassic-Lower Cretaceous sequences in the Sverdrup Basin, Arctic Canada. | 1983 |
| details | Nd | Nd | Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. | 1998 |