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	Isle of Wright	Kiokansium prolatum	Duxbury, 1983	0 in amm_b_Epicheloniceras martinoides	118.76	40.511
LO	Q13_14	Kiokansium prolatum	Duxbury, 2001	1 in amm_b_Leymeriella tardefurcata	110.87	49.676
FO	Q13_14	Kiokansium prolatum	Duxbury, 2001	1 in amm_b_Tropaeum bowerbanki	118.76	48.073
FO	Arctic Basin	Kiokansium prolatum	Williams et al., 2025	0.33 in stage_Aptian	118.694	72.768
LO	ODP 748	Kiokansium unituberculatum	Mao Shaozhi and Mohr, 1992	0.4 in nan_n_CC22	76.401	-60.448
FO	ODP 748	Kiokansium unituberculatum	Mohr and Mao Shaozhi, 1997	0 in stage_Campanian	83.65	-60.249
LO	North Sea Compilation	Kiokansium unituberculatum	Costa and Davey, 1992	1 in amm_b_Neocardioceras juddii	93.9	45.591
FO	Bohemian Basin	Kiokansium unituberculatum	Olde et al., 2015	0 in nan_u_UC8	90.36	43.295
LO	Bohemian Basin	Kiokansium unituberculatum	Olde et al., 2015	0.8 in nan_u_UC9a	89.984	43.35
FO	Cordebugle	Kiokansium unituberculatum	Tocher and Jarvis, 1996	0.2 in amm_b_Mantelliceras mantelli	99.874	41.418
LO	Cordebugle	Kiokansium unituberculatum	Tocher and Jarvis, 1996	0.5 in amm_b_Mantelliceras mantelli	99.31	41.472
FO	DSDP 400A	Kiokansium unituberculatum	Davey, 1979b	0.5 in nan_u_BC24	109.062	39.318
LO	DSDP 400A	Kiokansium unituberculatum	Davey, 1979b	0 in nan_u_BC27	103.274	39.824
LO	ODP 638B	Kiokansium unituberculatum	Masure, 1988a	0 in nan_n_CC6	125.423	34.397
FO	ODP 638B	Kiokansium unituberculatum	Masure, 1988a	1 in nan_n_CC3b	132.966	34.487
FO	ODP 765	Kiokansium unituberculatum	Helby and McMinn, 1992	0.5 in mag_M1r	123.976	-49.809
LO	Salzburg	Kiokansium unituberculatum	Boorova et al., 1999	0.4 in stage_Valanginian	135.66	28.654
FO	Salzburg	Kiokansium unituberculatum	Boorova et al., 1999	0.4 in stage_Berriasian	140.94	29.433
LO	Silesian Basin	Kiokansium unituberculatum	Skupien and Vašíček, 2002	1 in amm_t_Deshayesites forbesi	119.97	36.953
FO	Silesian Basin	Kiokansium unituberculatum	Skupien and Vašíček, 2002	0 in amm_t_Taveraidiscus hugii	126.5	35.147
FO	Speeton	Kiokansium unituberculatum	Duxbury, 2023	0.75 in amm_b_Speetoniceras inversum	130.183	40.927
FO	Fumichon	Kiokansium unituberculatum	Tocher and Jarvis, 1994	0.4 in amm_t_Mantelliceras dixoni	97.518	41.67
FO	Fumichon	Kiokansium unituberculatum	Tocher and Jarvis, 1994	0.4 in amm_t_Mantelliceras dixoni	97.518	41.67
FO	Scotian Margin	Kiokansium williamsii	Williams et al., 1993	0.75 in stage_Albian	103.675	40.505
LO	Scotian Margin	Kiokansium williamsii	Williams et al., 1993	0.25 in stage_Cenomanian	98.85	41.144
LO	Labrador Sea	Kiokansium williamsii	Nøhr-Hansen, 2025	0.57 in stage_Turonian	91.329	56.787