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	Isle of Wright, UK	Duxbury, 1983	0 in amm_b_Epicheloniceras martinoides	118.76	40.511
FO	Q13_14, Scotland	Duxbury, 2001	1 in amm_b_Tropaeum bowerbanki	118.76	48.073
FO	Arctic Basin, Arctic	Williams et al., 2025	0.33 in stage_Aptian	118.694	72.768
LO	Q13_14, Scotland	Duxbury, 2001	1 in amm_b_Leymeriella tardefurcata	110.87	49.676