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	Arctic Basin	Freboldinium arcticum	Bujak et al., 2022	0.5 in amm_b_Sonninia propinquans	170.205	72.78
FO	Volga Basin	Freboldinium arcticum	Feist-Burkhardt, 1994	0 in amm_b_Haugia variabilis	179.82	60.521
LO	Volga Basin	Freboldinium arcticum	Feist-Burkhardt, 1994	1 in amm_b_Witchellia laeviuscula	170.32	55.21
FO	Volga Basin	Freboldinium regula	Feist-Burkhardt, 1994	0 in amm_b_Pleuroceras spinatum	185.6	62.496
LO	Volga Basin	Freboldinium regula	Feist-Burkhardt, 1994	0.25 in amm_b_Dumortieria pseudoradiosa	177.2	58.927
FO	Bavaria	Freboldinium regulum	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	42.833
LO	Bavaria	Freboldinium regulum	Bucefalo Palliani and Riding, 2003	1 in amm_b_Pleuroceras spinatum	184.2	42.863
FO	Arctic Basin	Freboldinium regulum	Bujak et al., 2022	0.5 in amm_b_Pleuroceras spinatum	184.9	71.823
LO	Arctic Basin	Freboldinium serrulatum	Bujak et al., 2022	0 in amm_b_Hyperlioceras discites	170.9	72.716
FO	Svalbard	Freboldinium serrulatum	Davies, 1983	0 in stage_Toarcian	184.2	63.922