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	DSDP 545	Circulodinium almohadense	Below, 1984	0.4 in stage_Aptian	118.12	26.722
LO	DSDP 545	Circulodinium almohadense	Below, 1984	0.6 in stage_Aptian	116.48	27.078
FO	Australia synthesis	Circulodinium barbiferum	Cookson and Eisenack, 1982	0 in stage_Albian	113.2	-53.29
LO	Australia synthesis	Circulodinium barbiferum	Cookson and Eisenack, 1982	1 in stage_Cenomanian	93.9	-55.275
FO	Arctic Basin	Circulodinium brevispinosum	Nøhr-Hansen, 2025	0.25 in stage_Aptian	119.35	72.588
FO	Northeast Greenland	Circulodinium brevispinosum	Nøhr-Hansen, 2025	0.49 in stage_Aptian	117.382	55.859
FO	Northeast Greenland	Circulodinium brevispinosum	Nøhr-Hansen, 2025	0.19 in stage_Aptian	119.842	55.048
LO	Northeast Greenland	Circulodinium brevispinosum	Nøhr-Hansen, 2025	0.25 in stage_Albian	110.025	57.149
LO	Svalbard	Circulodinium brevispinosum	Nøhr-Hansen, 2025	0.9 in stage_Aptian	114.02	70.354
FO	Heilongjiang	Circulodinium cingulatum	He Chengquan et al., 1999	0.5 in stage_Hauterivian	129.55	53.833
LO	Heilongjiang	Circulodinium cingulatum	He Chengquan et al., 1999	1 in stage_Barremian	121.4	52.718
FO	Tarim Basin	Circulodinium circulatum	He Chengquan, 1991	0 in stage_Lutetian	48.07	38.365
LO	Tarim Basin	Circulodinium circulatum	He Chengquan, 1991	1 in stage_Priabonian	33.9	37.798
FO	North Sea Compilation	Circulodinium crebrum	Duxbury, 2019	0.5 in stage_Barremian	123.95	40.958
LO	North Sea Compilation	Circulodinium crebrum	Duxbury, 2019	1 in stage_Barremian	121.4	41.669
LO	ODP 748	Circulodinium distinctum	Mohr and Mao Shaozhi, 1997	1 in nan_n_CC23	72.247	-60.652
FO	Scotian Margin	Circulodinium distinctum	Williams et al., 1993	0.65 in stage_Kimmeridgian	151.179	34.633
LO	Scotian Margin	Circulodinium distinctum	Williams et al., 1993	0.85 in stage_Maastrichtian	66.96	37.986
LO	North Sea Compilation	Circulodinium distinctum	Duxbury, 2019	0.5 in stage_Albian	106.85	44.413
FO	North Sea Compilation	Circulodinium distinctum	Duxbury, 2019	1 in stage_Aptian	113.2	43.824
LO	Stevns Klint	Circulodinium distinctum	Surlyk et al., 2013	0 in nan_u_UC20d	67.279	45.646
FO	Australia synthesis	Circulodinium distinctum	Helby et al., 1987	0.8 in stage_Berriasian	138.78	-52.033
LO	Australia synthesis	Circulodinium distinctum	Helby et al., 1987	0.5 in stage_Cenomanian	97.2	-54.989
FO	DSDP 364	Circulodinium distinctum	Morgan, 1977	0.4 in nan_n_CC10a	95.256	-23.191
FO	DSDP 400A	Circulodinium distinctum	Davey, 1979b	0.9 in nan_u_BC21	115.011	38.554
LO	DSDP 400A	Circulodinium distinctum	Davey, 1979b	0.75 in nan_u_BC21	115.647	38.345
FO	DSDP 400A	Circulodinium distinctum	Davey, 1979b	0.5 in nan_u_BC21	116.709	37.996
FO	East Kent	Circulodinium distinctum	Prince et al., 2008	0.2 in amm_b_Gauthiericeras margae	87.972	44.134
LO	East Kent	Circulodinium distinctum	Prince et al., 2008	0.92 in amm_b_Placenticeras polyopsis	84.004	43.735
LO	Gulf	Circulodinium distinctum	Srivastava, 1995	1 in plfor_A_Contusotruncana plummerae	75.911	34.178
LO	Isle of Wright	Circulodinium distinctum	Duxbury, 1983	1 in amm_b_Deshayesites deshayesi	119.11	40.4
LO	ODP 638B	Circulodinium distinctum	Masure, 1988a	1 in nan_n_CC5	125.423	34.397
FO	ODP 638B	Circulodinium distinctum	Masure, 1988a	0.25 in nan_n_CC4b	130.308	33.959
LO	Q13_14	Circulodinium distinctum	Duxbury, 2001	0.5 in amm_b_Tropaeum bowerbanki	118.935	48.017
LO	ODP 765	Circulodinium distinctum	Helby and McMinn, 1992	1 in mag_M1n	121.4	-49.352
FO	ODP 765	Circulodinium distinctum	Helby and McMinn, 1992	0.8 in mag_M1n	121.877	-49.437
LO	Salzburg	Circulodinium distinctum	Boorova et al., 1999	0.9 in stage_Valanginian	133.11	28.446
FO	Salzburg	Circulodinium distinctum	Boorova et al., 1999	0.4 in stage_Berriasian	140.94	29.433
LO	Disko	Circulodinium distinctum	Piasecki et al., 1992	1 in nan_n_NP4	61.274	56.701
FO	Disko	Circulodinium distinctum	Piasecki et al., 1992	0.8 in nan_n_NP4	61.677	56.751
LO	Labrador Sea	Circulodinium distinctum	Nøhr-Hansen, 2025	1 in stage_Maastrichtian	66.04	53.052
FO	Central Danish Trough	Circulodinium distinctum	Heilmann-Clausen, 1987	0 in amm_b_Deshayesites deshayesi	119.97	45.475
LO	Central Danish Trough	Circulodinium distinctum	Heilmann-Clausen, 1987	1 in amm_b_Leymeriella tardefurcata	110.87	47.43
LO	DSDP 361	Circulodinium distinctum	Davey, 1978	0.2 in nan_c_NC7b	117.374	-42.579
FO	DSDP 361	Circulodinium distinctum	Davey, 1978	0.2 in nan_c_NC6b	120.291	-42.507
FO	DSDP 534	Circulodinium distinctum	Habib and Drugg, 1983	0.5 in mag_M16r	139.92	24.36
FO	DSDP 603	Circulodinium distinctum	Habib and Drugg, 1987	0.75 in mag_M16n	138.776	31.098
LO	Meer	Circulodinium distinctum	Slimani et al., 2011	0.9 in stage_Maastrichtian	66.653	41.522
LO	Nordvik Peninsula	Circulodinium distinctum	Nikitenko et al., 2008	0.72 in amm_s_Unzoned	135.401	72.685
LO	Volga Basin	Circulodinium distinctum	Harding et al., 2011	0.33 in amm_r_Dorsoplanites panderi	146.212	46.492
LO	Gulf of Guinea	Circulodinium distinctum	Guerrero-Murcia and Helenes, 2022	1 in stage_Albian	100.5	13.261
LO	Gulf of Guinea	Circulodinium distinctum	Guerrero-Murcia and Helenes, 2022	1 in stage_Maastrichtian	66.04	5.603
FO	Banks Island	Circulodinium distinctum	Williams et al., 2025	0 in stage_Coniacian	89.39	78.134
FO	Cape Nares	Circulodinium distinctum	Williams et al., 2025	0.67 in stage_Turonian	90.878	79.822
LO	Cape Nares	Circulodinium distinctum	Williams et al., 2025	0.5 in stage_Maastrichtian	69.105	77.576
LO	Snøvit field	Circulodinium distinctum	Radmacher et al., 2014a	0.25 in stage_Campanian	80.78	63.123
LO	Tyrihans Field	Circulodinium distinctum	Pearce et al., 2019	0.1 in stage_Maastrichtian	71.557	55.538
LO	DSDP 400A	Circulodinium distinctum ssp. brevispinum	Davey, 1979b	0.5 in nan_u_BC24	109.062	39.318
LO	DSDP 361	Circulodinium distinctum ssp. brevispinum	Davey, 1978	0 in nan_c_NC7a	119.401	-42.573
FO	DSDP 361	Circulodinium distinctum ssp. brevispinum	Davey, 1978	0.4 in nan_c_NC6b	120.068	-42.557
LO	DSDP 400A	Circulodinium distinctum ssp. longispinatum	Davey, 1979b	0 in nan_u_BC27	103.274	39.824
FO	DSDP 400A	Circulodinium distinctum ssp. longispinatum	Davey, 1979b	0.5 in nan_u_BC26	103.669	39.789
LO	ODP 748	Circulodinium hughesii	Mao Shaozhi and Mohr, 1992	0.2 in nan_n_CC22	76.583	-60.439
FO	ODP 748	Circulodinium hughesii	Mao Shaozhi and Mohr, 1992	0.1 in nan_n_CC22	76.674	-60.434
LO	Isle of Wright	Circulodinium hughesii	Clarke and Verdier, 1967	0.25 in stage_Turonian	92.772	43.415
FO	Rodmell	Circulodinium hughesii	Tocher and Jarvis, 1996	0.5 in amm_b_Acanthoceras rhotomagense	95.875	43.53
LO	Culver Cliff	Circulodinium hughesii	Pearce et al., 2020	0.5 in amm_b_Watinoceras devonense	93.765	43.474
LO	Q13_14	Circulodinium vectense	Duxbury, 2001	0 in amm_b_Hypacanthoplites jacobi	114.8	49.294
FO	Q13_14	Circulodinium vectense	Duxbury, 2001	0.75 in amm_b_Tropaeum bowerbanki	118.848	48.045
FO	Hold With Hope	Circulodinium vectense	Nøhr-Hansen et al., 2019	0.25 in stage_Aptian	119.35	55.694
LO	Hold With Hope	Circulodinium vectense	Nøhr-Hansen et al., 2019	0.3 in stage_Aptian	118.94	55.829
FO	Tarim Basin	Circulodinium wulagenense	He Chengquan, 1991	0 in stage_Lutetian	48.07	38.365
LO	Tarim Basin	Circulodinium wulagenense	He Chengquan, 1991	1 in stage_Priabonian	33.9	37.798