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	Scotian Margin	Ellipsoidictyum cinctum	Williams et al., 1993	0.15 in stage_Bathonian	167.738	29.113
LO	Scotian Margin	Ellipsoidictyum cinctum	Williams et al., 1993	0.55 in stage_Kimmeridgian	151.733	34.406
FO	Arctic Basin	Ellipsoidictyum cinctum	Bujak et al., 2022	0 in amm_b_Oxycerites orbis	165.72	73.193
LO	Caucasus	Ellipsoidictyum cinctum	Smelror and Lominadze, 1989	1 in amm_b_Kosmoceras jason	163.3	41.178
FO	Champagne	Ellipsoidictyum cinctum	Fauconnier, 1995	0 in amm_b_Garantiana garantiana	169.27	37.365
LO	Czestochowa	Ellipsoidictyum cinctum	Poulsen, 1998	0.2 in amm_t_Clydoniceras discus	165.458	41.92
FO	Figueira Da Foz	Ellipsoidictyum cinctum	Smelror et al., 1991	0.5 in amm_t_Perisphinctes bifurcatus	157.25	31.927
FO	Dorset-Yorkshire	Ellipsoidictyum cinctum	Woollam and Riding, 1983	0 in amm_b_Garantiana garantiana	169.27	38.282
FO	Haldager 1	Ellipsoidictyum cinctum	Davey, 1982	0.5 in amm_b_Glaucolithites glaucolithus	144.815	43.993
LO	Haldager 1	Ellipsoidictyum cinctum	Davey, 1982	1 in amm_b_Surites icenii	138.25	43.829
LO	Milne Land	Ellipsoidictyum cinctum	Smelror, 1988a	1 in amm_b_Oxycerites orbis	165.5	50.509
LO	Kong Karls Land	Ellipsoidictyum cintum	Smelror, 1988b	0.5 between 0 amm_b_Quenstedtoceras lamberti 1 amm_b_Quenstedtoceras mariae	161.055	67.08
FO	Kong Karls Land	Ellipsoidictyum cintum	Smelror, 1988b	0.18 between 0 amm_b_Macrocephalites herveyi 1 amm_b_Peltoceras athleta	164.779	66.641
FO	Timor Sea	Ellipsoidictyum fenestellum	Mantle, 2009b	0 in stage_Callovian	165.29	-41.506
LO	Timor Sea	Ellipsoidictyum fenestellum	Mantle, 2009b	1 in stage_Oxfordian	154.78	-46.413
LO	North Sea Compilation	Ellipsoidictyum imperfectum	Costa and Davey, 1992	1 in amm_b_Arrhaphoceras briacensis	100.25	45.025
FO	North Sea Compilation	Ellipsoidictyum imperfectum	Costa and Davey, 1992	1 in amm_b_Epicheloniceras martinoides	117.53	42.849
LO	Northeast Greenland	Ellipsoidictyum imperfectum	Nøhr-Hansen, 2025	0.42 in stage_Albian	107.866	57.368
LO	Rio Argos	Ellipsoidictyum imperfectum	Leereveld, 1997a	0.5 in amm_t_Pleisiospitidiscus ligatus	128.405	24.408
FO	Rio Argos	Ellipsoidictyum imperfectum	Leereveld, 1997a	1 in amm_t_Subsaynella sayni	128.82	24.349
LO	Treeless Creek	Ellipsoidictyum imperfectum	Williams et al., 2025	0.2 in stage_Coniacian	88.652	77.185
FO	Cape Nares	Ellipsoidictyum imperfectum	Williams et al., 2025	0.5 in stage_Albian	106.85	79.676
LO	Cape Nares	Ellipsoidictyum imperfectum	Williams et al., 2025	1 in stage_Albian	100.5	80.532
FO	Q13_14	Ellipsoidictyum imperfectum ssp. prolatum	Duxbury, 2001	0.5 in stage_Aptian	117.3	48.54
LO	Q13_14	Ellipsoidictyum imperfectum ssp. prolatum	Duxbury, 2001	0.5 in stage_Albian	106.85	50.066
FO	North Sea Compilation	Ellipsoidictyum imperfectum ssp. quadrum	Duxbury, 2019	0.5 in stage_Aptian	117.3	42.923
LO	North Sea Compilation	Ellipsoidictyum imperfectum ssp. quadrum	Duxbury, 2019	1 in stage_Aptian	113.2	43.824
FO	North Sea Compilation	Ellipsoidictyum imperfectum ssp. quadrum	Duxbury, 2019	0.5 in stage_Albian	106.85	44.413
FO	Vocontian Basin	Ellipsoidictyum minusculum	Duxbury, 2024	0 in amm_t_Karakaschiceras inostranzewi	136	30.032
LO	Vocontian Basin	Ellipsoidictyum minusculum	Duxbury, 2024	1 in amm_t_Saynoceras verrucosum	134.55	29.956
FO	Dalmiapuram	Ellipsoidictyum punctatum	Jain, 1975	0 in stage_Albian	113.2	-47.741
LO	Dalmiapuram	Ellipsoidictyum punctatum	Jain, 1975	0.5 in stage_Albian	106.85	-46.794
FO	Dorset-Yorkshire	Ellipsoidictyum sagena	Duxbury, 1980	0.5 in stage_Barremian	123.95	40.187
LO	Dorset-Yorkshire	Ellipsoidictyum sagena	Duxbury, 1980	1 in stage_Barremian	121.4	40.895
FO	Speeton	Ellipsoidictyum sagena	Duxbury, 2023	0.3 in amm_b_Endemoceras regale	131.54	40.736