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	Arctic Basin, Arctic	Bujak et al., 2022	0 in amm_b_Harpoceras serpentinum	183.16	72.487
FO	Volga Basin, Russia	Feist-Burkhardt, 1994	0 in amm_b_Haugia variabilis	179.82	60.521
FO	Kong Karls Land, Svalbard	Smelror, 1988b	0.33 between 0 amm_b_Macrocephalites herveyi 1 amm_b_Peltoceras athleta	164.353	66.692
LO	Arctic Basin, Arctic	Bujak et al., 2022	0 in amm_b_Procerites hodsoni	166.04	73.164
LO	Volga Basin, Russia	Feist-Burkhardt, 1994	0.25 in amm_b_Dumortieria pseudoradiosa	177.2	58.927
LO	Kong Karls Land, Svalbard	Smelror, 1988b	0.25 between 0 amm_b_Quenstedtoceras lamberti 1 amm_b_Quenstedtoceras mariae	161.752	66.998