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
LO	Scotian Margin	Callaiosphaeridium asymmetricum	Fensome et al., 2008	0.75 in nan_c_NC18	80.044	38.396
FO	Scotian Margin	Callaiosphaeridium asymmetricum	Williams et al., 1993	0.6 in stage_Hauterivian	128.94	35.512
FO	North Sea Compilation	Callaiosphaeridium asymmetricum	Costa and Davey, 1992	0 in amm_b_Speetoniceras inversum	130.91	39.329
LO	North Sea Compilation	Callaiosphaeridium asymmetricum	Costa and Davey, 1992	0.5 in amm_b_Trachyscaphites spiniger	80.82	44.128
LO	Stevns Klint	Callaiosphaeridium asymmetricum	Surlyk et al., 2013	1 in nan_u_UC16d	71.941	46.076
FO	Stevns Klint	Callaiosphaeridium asymmetricum	Surlyk et al., 2013	0 in nan_u_UC16d	76.766	46.52
LO	Cordebugle	Callaiosphaeridium asymmetricum	Tocher and Jarvis, 1996	0.6 in amm_b_Mantelliceras mantelli	99.122	41.49
FO	DSDP 400A	Callaiosphaeridium asymmetricum	Davey, 1979b	0.9 in nan_u_BC21	115.011	38.554
LO	East Kent	Callaiosphaeridium asymmetricum	Prince et al., 2008	0.92 in amm_b_Placenticeras polyopsis	84.004	43.735
LO	Isle of Wright	Callaiosphaeridium asymmetricum	Clarke and Verdier, 1967	0.5 in stage_Santonian	84.675	42.784
LO	Pueblo	Callaiosphaeridium asymmetricum	Dodsworth, 2000	0.87 in amm_b_Fagesia catinus	93.386	45.807
FO	ODP 765	Callaiosphaeridium asymmetricum	Helby and McMinn, 1992	0.8 in nan_n_CC7a	119.825	-49.087
LO	6711	Callaiosphaeridium asymmetricum	Radmacher et al., 2015	0.2 in stage_Campanian	81.354	59.411
LO	Labrador Sea	Callaiosphaeridium asymmetricum	Nøhr-Hansen, 2025	0.53 in stage_Campanian	77.566	54.22
LO	Poland synthesis	Callaiosphaeridium asymmetricum	Niechwedowicz and Walaszczyk, 2021	0.25 in ino_Inoceramus redbirdensis	72.65	42.685
FO	DSDP 361	Callaiosphaeridium asymmetricum	Davey, 1978	1 in nan_c_NC6b	119.401	-42.573
FO	Haldager 1	Callaiosphaeridium asymmetricum	Davey, 1982	0 in amm_b_Endemoceras regale	131.81	43.633
FO	Meer	Callaiosphaeridium asymmetricum	Slimani et al., 2011	0.55 in stage_Campanian	77.336	42.476
LO	Meer	Callaiosphaeridium asymmetricum	Slimani et al., 2011	0.8 in stage_Campanian	74.466	42.22
FO	Rio Argos	Callaiosphaeridium asymmetricum	Leereveld, 1997a	0.75 in amm_t_Acanthodiscus radiatus	131.858	24.528
LO	Rio Argos	Callaiosphaeridium asymmetricum	Leereveld, 1997a	1 in amm_t_Imerites giraudi	121.55	25.37
LO	Trunch borehole	Callaiosphaeridium asymmetricum	Pearce et al., 2020	0.9 in amm_b_Texanites gallicus	85.286	44.661
FO	Speeton	Callaiosphaeridium asymmetricum	Duxbury, 2023	0.1 in amm_b_Endemoceras regale	131.72	40.746
LO	Duneau	Callaiosphaeridium asymmetricum	Tocher and Jarvis, 1995	0.25 in amm_t_Metoicoceras geslinianum	94.465	42.023
LO	Fumichon	Callaiosphaeridium asymmetricum	Tocher and Jarvis, 1994	1 in amm_t_Acanthoceras rhotomagense	95.67	41.818
LO	Fumichon	Callaiosphaeridium asymmetricum	Tocher and Jarvis, 1994	1 in amm_t_Acanthoceras rhotomagense	95.67	41.818
FO	Fumichon	Callaiosphaeridium asymmetricum	Tocher and Jarvis, 1994	0 in amm_t_Mantelliceras dixoni	98.37	41.601
FO	Fumichon	Callaiosphaeridium asymmetricum	Tocher and Jarvis, 1994	0 in amm_t_Mantelliceras dixoni	98.37	41.601
LO	Snøvit field	Callaiosphaeridium asymmetricum	Radmacher et al., 2014a	0.1 in stage_Campanian	82.502	63.269
FO	Saxony	Callaiosphaeridium asymmetricum ssp. latum	Heilmann-Clausen and Thomsen, 1995	0 in stage_Barremian	126.5	38.819
LO	Saxony	Callaiosphaeridium asymmetricum ssp. latum	Heilmann-Clausen and Thomsen, 1995	0.5 in stage_Barremian	123.95	39.527
FO	Cauvery Basin	Callaiosphaeridium scabratum	Khowaja-Ateequzzaman and Garg, 2004a	0 in stage_Turonian	93.9	-42.65
LO	Cauvery Basin	Callaiosphaeridium scabratum	Khowaja-Ateequzzaman and Garg, 2004a	0.5 in stage_Turonian	91.645	-41.977
FO	North Sea Compilation	Callaiosphaeridium trycherium	Costa and Davey, 1992	0.5 in amm_b_Simbirskites marginatus	127.63	39.931
LO	North Sea Compilation	Callaiosphaeridium trycherium	Costa and Davey, 1992	0.5 in amm_b_Tropaeum bowerbanki	118.935	42.4
LO	Isle of Wright	Callaiosphaeridium trycherium	Duxbury, 1983	0.5 in amm_b_Tropaeum bowerbanki	118.935	40.456
FO	Central Danish Trough	Callaiosphaeridium trycherium	Heilmann-Clausen, 1987	0 in amm_b_Milanowskia speetonensis	129.94	42.689
LO	Central Danish Trough	Callaiosphaeridium trycherium	Heilmann-Clausen, 1987	1 in amm_b_Parahoplites nutfieldiensis	114.8	47.077
LO	Rio Argos	Callaiosphaeridium trycherium	Leereveld, 1997a	0.5 in amm_t_Toxancyloceras vandenheckii	123.695	25.069
FO	Rio Argos	Callaiosphaeridium trycherium	Leereveld, 1997a	0.15 in amm_t_Lyticoceras nodosoplicatum	130.764	24.325
FO	Speeton	Callaiosphaeridium trycherium	Duxbury, 2023	0.7 in amm_b_Endemoceras regale	131.18	40.715