Data plotted here is from DINOSTRAT, available via Zenodo: DOI: 10.5281/zenodo.18375303. Please cite Bijl, 2022 https://doi.org/10.5194/essd-14-579-2022 when using this data.

Distribution


Plots are based on the following information

FO/LO	Location	Taxon	Source	Calibration	Age (Ma)	Paleolatitude
FO	Alaska	Boreocysta butticula	Wiggins, 1969	0.5 in stage_Valanginian	135.15	81.741
LO	Alaska	Boreocysta butticula	Wiggins, 1969	0.5 in stage_Hauterivian	129.55	82.102
FO	Northeast Greenland	Boreocysta isfjordica	Nøhr-Hansen, 2025	0.64 in stage_Valanginian	134.436	52.588