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	Source	Calibration	Age (Ma)	Paleolatitude
FO	North Sea Compilation, Europe	Costa and Davey, 1992	0.9 in amm_b_Placenticeras polyopsis	84.03	44.447
FO	Arctic Basin, Arctic	Williams et al., 2025	1 in stage_Santonian	83.65	75.04
LO	North Sea Compilation, Europe	Costa and Davey, 1992	1 in amm_b_Bostrychoceras polyplocum	78.34	43.91
LO	Tyrihans Field, Norway	Pearce et al., 2019	0.75 in stage_Campanian	75.04	55.994