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	North Sea Compilation	Oligosphaeridium abaculum	Costa and Davey, 1992	0 in amm_b_Milanowskia speetonensis	129.94	39.286
LO	North Sea Compilation	Oligosphaeridium abaculum	Costa and Davey, 1992	0.5 in amm_b_Simbirskites variabilis	126.885	40.138
LO	Q13_14	Oligosphaeridium abaculum	Duxbury, 2001	0.5 in amm_b_Simbirskites variabilis	126.885	45.76
FO	Northeast Greenland	Oligosphaeridium abaculum	Nøhr-Hansen, 2025	0.21 in stage_Barremian	125.429	53.508
FO	Hold With Hope	Oligosphaeridium abaculum	Nøhr-Hansen et al., 2019	0.3 in stage_Barremian	124.97	54.118
FO	Shandong	Oligosphaeridium abbreviatum	Xu Jinli et al., 1997	0 in stage_Lutetian	48.07	41.922
LO	Shandong	Oligosphaeridium abbreviatum	Xu Jinli et al., 1997	1 in stage_Priabonian	33.9	40.474
LO	Scotian Margin	Oligosphaeridium albertense	Fensome et al., 2008	0.5 between 0 stage_Albian 1 nan_c_NC11	103.59	40.516
LO	North Sea Compilation	Oligosphaeridium albertense	Costa and Davey, 1992	1 in amm_b_Cunningtoniceras inerme	96.08	45.411
LO	Arctic Basin	Oligosphaeridium albertense	Williams et al., 2025	1 in stage_Albian	100.5	74.212
LO	Arctic Basin	Oligosphaeridium albertense	Williams et al., 2025	0 in stage_Cenomanian	100.5	74.212
LO	Labrador Sea	Oligosphaeridium albertense	Nøhr-Hansen, 2025	0 in stage_Turonian	93.9	57.064
FO	Western Canada	Oligosphaeridium albertense	Pocock, 1962	0 in stage_Barremian	126.5	56.932
LO	Western Canada	Oligosphaeridium albertense	Pocock, 1962	1 in stage_Barremian	121.4	57.37
LO	ODP 1053	Oligosphaeridium anapetum	Van Mourik et al., 2001	0 in mag_C13r	35.102	27.188
FO	ODP 1053	Oligosphaeridium anapetum	Van Mourik et al., 2001	0.8 in nan_c_CP14b	38.061	26.882
FO	Poland synthesis	Oligosphaeridium araneum	Niechwedowicz, 2021	0 in stage_Campanian	83.65	44.122
LO	Poland synthesis	Oligosphaeridium araneum	Niechwedowicz, 2021	0.25 in stage_Maastrichtian	70.638	42.414
LO	Arctic Basin	Oligosphaeridium asterigerum	Williams et al., 2025	0.4 in stage_Albian	108.12	73.984
LO	ODP 765	Oligosphaeridium asterigerum	Helby and McMinn, 1992	1 in mag_M1n	121.4	-49.352
LO	Central Danish Trough	Oligosphaeridium asterigerum	Heilmann-Clausen, 1987	1 in amm_b_Proleymeriella schrammeni	111.27	47.394
FO	Central Danish Trough	Oligosphaeridium asterigerum	Heilmann-Clausen, 1987	0 in amm_b_Paratollia/Platylenticeras	136.59	43.052
FO	Haldager 1	Oligosphaeridium asterigerum	Davey, 1982	1 in amm_b_Stolcoceras tuberculatum	132.75	43.672
FO	Italy synthesis	Oligosphaeridium buciniferum	Corradini, 1973	0 in stage_Coniacian	89.39	27.554
LO	Italy synthesis	Oligosphaeridium buciniferum	Corradini, 1973	1 in stage_Maastrichtian	66.04	28.098
FO	Snow Island	Oligosphaeridium byersense	Duane, 1997	0 in stage_Valanginian	137.7	-49.758
LO	Snow Island	Oligosphaeridium byersense	Duane, 1997	1 in stage_Valanginian	132.6	-50.761
LO	ODP 748	Oligosphaeridium complex	Mao Shaozhi and Mohr, 1992	0.8 in nan_n_CC24	70.564	-60.735
FO	ODP 748	Oligosphaeridium complex	Mohr and Mao Shaozhi, 1997	0 in nan_n_CC21	77.563	-60.391
LO	Scotian Margin	Oligosphaeridium complex	Williams et al., 1993	0.15 in stage_Lutetian	47.014	37.523
FO	Scotian Margin	Oligosphaeridium complex	Williams et al., 1993	0.3 in stage_Valanginian	136.17	35.835
FO	North Sea Compilation	Oligosphaeridium complex	Costa and Davey, 1992	0 in amm_b_Paratollia/Platylenticeras	136.59	39.657
LO	Stevns Klint	Oligosphaeridium complex	Surlyk et al., 2013	0.5 in nan_u_UC20d	66.66	45.589
FO	Suvlu	Oligosphaeridium complex	King et al., 2018	0 in nan_n_NP10	56.001	37.697
LO	DSDP 364	Oligosphaeridium complex	Morgan, 1977	0 in nan_n_CC8a	113.784	-21.757
FO	DSDP 400A	Oligosphaeridium complex	Davey, 1979b	0.5 in nan_u_BC21	116.709	37.996
LO	DSDP 555	Oligosphaeridium complex	Brown and Downie, 1984	0 in nan_n_NP10	56.001	46.453
FO	East Kent	Oligosphaeridium complex	Prince et al., 2008	0.5 in amm_b_Prionocyclus germani	89.545	44.339
FO	ODP 638B	Oligosphaeridium complex	Masure, 1988a	0.5 in nan_n_CC4b	129.535	33.948
FO	Q13_14	Oligosphaeridium complex	Duxbury, 2001	0.5 in amm_b_Paratollia/Platylenticeras	135.57	45.265
LO	Rif	Oligosphaeridium complex	Slimani et al., 2016	0.5 in stage_Thanetian	57.62	23.321
FO	Rif	Oligosphaeridium complex	Slimani et al., 2016	0.8 in stage_Campanian	74.466	24.24
LO	Rif	Oligosphaeridium complex	Slimani et al., 2016	1 in stage_Selandian	59.24	23.081
FO	Rif	Oligosphaeridium complex	Slimani et al., 2016	0.6 in stage_Maastrichtian	68.492	23.827
FO	ODP 765	Oligosphaeridium complex	Helby and McMinn, 1992	0.5 in mag_M0r	121.182	-49.314
FO	Northeast Greenland	Oligosphaeridium complex	Nøhr-Hansen, 2025	0.7 in stage_Berriasian	139.32	52.885
FO	Haldager 1	Oligosphaeridium complex	Davey, 1982	0 in amm_b_Endemoceras regale	131.81	43.633
FO	Rio Argos	Oligosphaeridium complex	Leereveld, 1997b	0.1 in amm_t_Thurmanniceras pertransiens	137.503	25.318
FO	Hold With Hope	Oligosphaeridium complex	Nøhr-Hansen et al., 2019	0.9 in stage_Berriasian	138.24	53.308
FO	Moray Firth	Oligosphaeridium complex	Duxbury, 2018	0.5 in amm_b_Paratollia/Platylenticeras	135.57	44.455
FO	Volga Basin	Oligosphaeridium complex	Harding et al., 2011	0 in amm_r_Surites tzikwinianus	138.25	45.069
FO	Broyon	Oligosphaeridium complex	Monteil, 1992a	0 in amm_t_Saynoceras verrucosum	135.4	31.503
FO	Vocontian Basin	Oligosphaeridium complex	Duxbury, 2024	0.25 in amm_t_Karakaschiceras inostranzewi	135.85	30.025
LO	Banks Island	Oligosphaeridium complex	Williams et al., 2025	0.75 in stage_Cenomanian	95.55	80.531
LO	Cape Nares	Oligosphaeridium complex	Williams et al., 2025	1 in stage_Albian	100.5	80.532
FO	Boyarka	Oligosphaeridium complex	Shulgina et al., 1994	0.6 in amm_s_Unzoned	135.766	68.41
FO	Marlborough	Oligosphaeridium complex ssp. brevispinum	Schiøler and Wilson, 1998	0.67 in stage_Coniacian	86.918	-68.168
LO	Marlborough	Oligosphaeridium complex ssp. brevispinum	Schiøler and Wilson, 1998	0.9 in stage_Coniacian	86.069	-67.623
FO	Samla Hills	Oligosphaeridium dharmpurense	Khanna and Singh, 1981b	0 in stage_Lutetian	48.07	2.749
LO	Samla Hills	Oligosphaeridium dharmpurense	Khanna and Singh, 1981b	1 in stage_Bartonian	37.71	10.576
LO	North Sea Compilation	Oligosphaeridium diluculum	Copestake and Partington, 2023	0.67 in amm_b_Surites stenomphalus	137.955	39.705
LO	North Sea Compilation	Oligosphaeridium diluculum	Costa and Davey, 1992	1 in amm_b_Stolcoceras tuberculatum	132.75	39.451
FO	North Sea Compilation	Oligosphaeridium diluculum	Costa and Davey, 1992	0.5 in amm_b_Surites icenii	138.51	39.724
FO	Arctic Basin	Oligosphaeridium diluculum	Williams et al., 2025	0.9 in stage_Berriasian	138.24	70.551
LO	Central Danish Trough	Oligosphaeridium diluculum	Heilmann-Clausen, 1987	0.5 in amm_b_Paratollia/Platylenticeras	135.57	43.01
FO	Central Danish Trough	Oligosphaeridium diluculum	Heilmann-Clausen, 1987	0 in amm_b_Surites stenomphalus	138.25	43.121
FO	Haldager 1	Oligosphaeridium diluculum	Davey, 1982	0.5 in amm_b_Surites icenii	138.51	43.836
LO	Rio Argos	Oligosphaeridium diluculum	Leereveld, 1997a	0.25 in amm_t_Gerhardtia sartousi	122.745	25.202
FO	Rio Argos	Oligosphaeridium diluculum	Leereveld, 1997b	0 in amm_t_Tirnovella alpillensis	138.48	25.398
FO	Moray Firth	Oligosphaeridium distinctum	Duxbury, 2018	0 in stage_Valanginian	137.7	44.377
LO	Moray Firth	Oligosphaeridium distinctum	Duxbury, 2018	0.5 in stage_Valanginian	135.15	44.47
FO	Moray Firth	Oligosphaeridium distinctum	Duxbury, 2018	0.85 in amm_b_Polyptychites	135.726	44.449
FO	Vocontian Basin	Oligosphaeridium distinctum	Duxbury, 2024	0.1 in amm_t_Criosarasinella furcillata	133.041	29.864
LO	Vocontian Basin	Oligosphaeridium distinctum	Duxbury, 2024	0.4 in amm_t_Criosarasinella furcillata	132.894	29.856
LO	ODP 959	Oligosphaeridium dividuum	Masure et al., 1998	1 in stage_Santonian	83.65	-6.752
LO	ODP 638B	Oligosphaeridium dividuum	Masure, 1988a	1 in nan_n_CC4b	127.99	34.117
FO	ODP 638B	Oligosphaeridium dividuum	Masure, 1988a	0.5 in nan_n_CC4a	132.024	34.3
LO	Salzburg	Oligosphaeridium dividuum	Boorova et al., 1999	1 in stage_Valanginian	132.6	28.416
FO	Salzburg	Oligosphaeridium dividuum	Boorova et al., 1999	0.8 in stage_Valanginian	133.62	28.476
FO	Silesian Basin	Oligosphaeridium djenn	Skupien and Vašíček, 2002	0 in amm_t_Acanthohoplites nolani	116.74	37.955
LO	Silesian Basin	Oligosphaeridium djenn	Skupien and Vašíček, 2002	1 in amm_t_Acanthohoplites nolani	114.37	38.54
FO	Dongpu	Oligosphaeridium dongmingense	He Chengquan et al., 1989	0 in stage_Danian	66.04	28.846
LO	Dongpu	Oligosphaeridium dongmingense	He Chengquan et al., 1989	1 in stage_Ypresian	48.07	29.507
FO	Dorset-Yorkshire	Oligosphaeridium fenestratum	Duxbury, 1980	0.25 in stage_Barremian	125.225	39.832
LO	Dorset-Yorkshire	Oligosphaeridium fenestratum	Duxbury, 1980	0.75 in stage_Barremian	122.675	40.541
FO	Tarim Basin	Oligosphaeridium granulatum	He Chengquan, 1991	0 in stage_Priabonian	37.71	38.294
LO	Tarim Basin	Oligosphaeridium granulatum	He Chengquan, 1991	1 in stage_Priabonian	33.9	37.798
FO	Heilongjiang	Oligosphaeridium heilongjiangense	Yu Jingxian, 1982	0 in stage_Valanginian	137.7	53.697
LO	Heilongjiang	Oligosphaeridium heilongjiangense	Yu Jingxian, 1982	1 in stage_Hauterivian	126.5	53.416
FO	Dongpu	Oligosphaeridium homomorphum	He Chengquan et al., 1989	0 in stage_Danian	66.04	28.846
LO	Dongpu	Oligosphaeridium homomorphum	He Chengquan et al., 1989	1 in stage_Ypresian	48.07	29.507
LO	Speeton	Oligosphaeridium inordinatum	Duxbury, 2023	0.6 in amm_b_Paracrioceras rarocinctum	125.792	42.121
FO	Speeton	Oligosphaeridium inordinatum	Duxbury, 2023	0.95 in amm_b_Simbirskites variabilis	126.538	41.918
FO	Italy synthesis	Oligosphaeridium intermedium	Corradini, 1973	0 in stage_Maastrichtian	72.17	28.286
LO	Italy synthesis	Oligosphaeridium intermedium	Corradini, 1973	1 in stage_Danian	61.66	27.868
FO	Heilongjiang	Oligosphaeridium jixiense	He Chengquan and Sun Xuekun, 2000	0.5 in stage_Hauterivian	129.55	53.833
LO	Heilongjiang	Oligosphaeridium jixiense	He Chengquan and Sun Xuekun, 2000	1 in stage_Hauterivian	126.5	53.416
LO	Q13_14	Oligosphaeridium junctum	Duxbury, 2001	0.15 in amm_b_Milanowskia speetonensis	129.772	44.957
FO	Central North Sea	Oligosphaeridium junctum	Bailey and Loy, 1997	0 in stage_Hauterivian	132.6	46.623
LO	Central North Sea	Oligosphaeridium junctum	Bailey and Loy, 1997	1 in stage_Hauterivian	126.5	47.761
LO	Speeton	Oligosphaeridium junctum	Duxbury, 2023	0.75 in amm_b_Endemoceras regale	131.135	40.713
FO	Speeton	Oligosphaeridium junctum	Duxbury, 2023	0.1 in amm_b_Endemoceras regale	131.72	40.746
FO	Saxony	Oligosphaeridium levimarginatum	Marheinecke, 1992	0.25 in stage_Maastrichtian	70.638	41.947
LO	Saxony	Oligosphaeridium levimarginatum	Marheinecke, 1992	0.75 in stage_Maastrichtian	67.573	41.664
LO	Stevns Klint	Oligosphaeridium levimarginatum	Surlyk et al., 2013	1 in nan_u_UC18	70.143	45.91
FO	North Sea Compilation	Oligosphaeridium magnum	Duxbury, 2019	0.5 in stage_Barremian	123.95	40.958
LO	North Sea Compilation	Oligosphaeridium magnum	Duxbury, 2019	1 in stage_Barremian	121.4	41.669
FO	Bohai	Oligosphaeridium membranaceum	Jiabo, 1978	0 in stage_Danian	66.04	43.925
LO	Bohai	Oligosphaeridium membranaceum	Jiabo, 1978	1 in stage_Ypresian	48.07	44.723
FO	Bohai	Oligosphaeridium minus	Jiabo, 1978	0 in stage_Danian	66.04	43.925
LO	Bohai	Oligosphaeridium minus	Jiabo, 1978	1 in stage_Ypresian	48.07	44.723
FO	Dongpu	Oligosphaeridium ovatum	He Chengquan et al., 1989	0 in stage_Danian	66.04	28.846
LO	Dongpu	Oligosphaeridium ovatum	He Chengquan et al., 1989	1 in stage_Ypresian	48.07	29.507
FO	Scotian Margin	Oligosphaeridium patulum	Williams et al., 1993	0.4 in stage_Kimmeridgian	152.564	34.066
LO	Scotian Margin	Oligosphaeridium patulum	Williams et al., 1993	0.9 in stage_Kimmeridgian	149.794	34.798
FO	North Sea Compilation	Oligosphaeridium patulum	Copestake and Partington, 2023	0 in amm_b_Rasenia cymodoce	153.4	40.181
LO	North Sea Compilation	Oligosphaeridium patulum	Copestake and Partington, 2023	1 in amm_b_Virgatopavlovia fittoni	145.1	39.957
LO	North Sea Compilation	Oligosphaeridium patulum	Riding and Thomas, 1992	1 in amm_b_Pavlovia pallasioides	146.27	39.998
FO	North Sea Compilation	Oligosphaeridium patulum	Riding and Thomas, 1992	0 in amm_b_Rasenia cymodoce	153.4	40.181
LO	Arctic Basin	Oligosphaeridium patulum	Bujak et al., 2022	0 in amm_b_Titanites anguiformis	144.33	71.453
LO	Denmark synthesis	Oligosphaeridium patulum	Poulsen, 1992	1 in amm_b_Pectinatites pectinatus	146.76	44.314
LO	North Yorkshire	Oligosphaeridium patulum	Riding and Thomas, 1988	1 in amm_b_Pectinatites pectinatus	146.76	41.389
FO	North Yorkshire	Oligosphaeridium patulum	Riding and Thomas, 1988	0 in amm_b_Rasenia cymodoce	153.4	41.422
FO	Wollaston	Oligosphaeridium patulum	Alsen et al., 2023	1 in amm_b_Aulacostephanus eudoxus	149.63	54.715
LO	Wollaston	Oligosphaeridium patulum	Alsen et al., 2023	1 in amm_b_Pectinatites hudlestoni	147.36	54.56
FO	Isle of Wright	Oligosphaeridium perforatum	Duxbury, 1983	1 in amm_b_Hypacanthoplites jacobi	113.2	42.071
LO	Isle of Wright	Oligosphaeridium perforatum	Duxbury, 1983	0.5 in amm_b_Proleymeriella schrammeni	112.235	42.135
LO	Salzburg	Oligosphaeridium perforatum	Boorova et al., 1999	0.75 in stage_Valanginian	133.875	28.491
FO	Salzburg	Oligosphaeridium perforatum	Boorova et al., 1999	0.7 in stage_Valanginian	134.13	28.506
FO	Speeton	Oligosphaeridium perforatum	Duxbury, 2023	1 in amm_b_Simbirskites marginatus	127.27	41.719
FO	Q13_14	Oligosphaeridium perforatum ssp. colum	Duxbury, 2001	0.25 in amm_b_Hypacanthoplites jacobi	114.4	49.333
LO	Q13_14	Oligosphaeridium perforatum ssp. colum	Duxbury, 2001	0.5 in amm_b_Proleymeriella schrammeni	112.235	49.543
FO	Bohemian Basin	Oligosphaeridium poculum	Olde et al., 2015	0 in nan_u_UC8	90.36	43.295
LO	East Kent	Oligosphaeridium poculum	Prince et al., 2008	0 in amm_b_Peroniceras tridorsatum	89.39	44.319
FO	ODP 765	Oligosphaeridium poculum	Helby and McMinn, 1992	0.8 in nan_n_CC7a	119.825	-49.087
LO	Salzburg	Oligosphaeridium poculum	Boorova et al., 1999	0.4 in stage_Valanginian	135.66	28.654
FO	Salzburg	Oligosphaeridium poculum	Boorova et al., 1999	0.2 in stage_Valanginian	136.68	28.805
LO	Silesian Basin	Oligosphaeridium poculum	Skupien and Vašíček, 2002	1 in amm_t_Leymeriella germanica	111.27	38.763
LO	ODP 959	Oligosphaeridium porosum	Masure et al., 1998	1 in stage_Santonian	83.65	-6.752
FO	Aracaju	Oligosphaeridium porosum	Santos et al., 2018	0.9 in nan_u_UC6	93.765	-12.59
LO	Aracaju	Oligosphaeridium porosum	Santos et al., 2018	1 in nan_u_UC7	90.36	-13.624
FO	North Sea Compilation	Oligosphaeridium pseudoabaculum	Harding, 1990b	0 in stage_Barremian	126.5	40.246
LO	North Sea Compilation	Oligosphaeridium pseudoabaculum	Harding, 1990b	0.5 in stage_Barremian	123.95	40.958
LO	ODP 748	Oligosphaeridium pulcherrimum	Mao Shaozhi and Mohr, 1992	1 in nan_n_CC22	75.854	-60.475
FO	ODP 748	Oligosphaeridium pulcherrimum	Mohr and Mao Shaozhi, 1997	0.5 in stage_Campanian	77.91	-60.374
LO	ODP 959	Oligosphaeridium pulcherrimum	Masure et al., 1998	1 in stage_Campanian	72.17	-7.956
FO	ODP 959	Oligosphaeridium pulcherrimum	Masure et al., 1998	0 in stage_Santonian	85.7	-6.416
LO	Bohemian Basin	Oligosphaeridium pulcherrimum	Olde et al., 2015	1 in nan_u_UC9c	87.18	43.256
FO	Bohemian Basin	Oligosphaeridium pulcherrimum	Olde et al., 2015	0.25 between 0 nan_u_UC6 1 nan_u_UC7	93.015	42.905
LO	DSDP 400A	Oligosphaeridium pulcherrimum	Davey, 1979b	0.67 in nan_u_BC22	113.64	38.919
FO	DSDP 400A	Oligosphaeridium pulcherrimum	Davey, 1979b	0.33 in nan_u_BC22	114.12	38.848
LO	DSDP 555	Oligosphaeridium pulcherrimum	Brown and Downie, 1984	0 in nan_n_NP10	56.001	46.453
FO	DSDP 555	Oligosphaeridium pulcherrimum	Brown and Downie, 1984	0 in nan_n_NP10	56.001	46.453
FO	East Kent	Oligosphaeridium pulcherrimum	Prince et al., 2008	0 in amm_b_Peroniceras tridorsatum	89.39	44.319
FO	Isle of Wright	Oligosphaeridium pulcherrimum	Duxbury, 1983	0.13 in amm_b_Hypacanthoplites jacobi	114.592	41.83
LO	ODP 638B	Oligosphaeridium pulcherrimum	Masure, 1988a	1 in nan_n_CC5	125.423	34.397
FO	ODP 638B	Oligosphaeridium pulcherrimum	Masure, 1988a	0.75 in nan_n_CC4b	128.762	34.033
FO	Arctic Basin	Oligosphaeridium pulcherrimum	Bujak et al., 2022	0 in amm_b_Aulacostephanus eudoxus	150.99	72.439
LO	Arctic Basin	Oligosphaeridium pulcherrimum	Williams et al., 2025	0.4 in stage_Maastrichtian	69.718	73.219
FO	ODP 765	Oligosphaeridium pulcherrimum	Helby and McMinn, 1992	0 in mag_C34n	120.964	-49.275
LO	ODP 765	Oligosphaeridium pulcherrimum	Helby and McMinn, 1992	0.8 in nan_n_CC7a	119.825	-49.087
LO	Disko	Oligosphaeridium pulcherrimum	Piasecki et al., 1992	1 in nan_n_NP5	59.359	56.601
FO	Rio Argos	Oligosphaeridium pulcherrimum	Leereveld, 1997a	0.5 in amm_t_Acanthodiscus radiatus	132.105	24.574
LO	Rio Argos	Oligosphaeridium pulcherrimum	Leereveld, 1997a	0.5 in amm_t_Pseudothurmannia ohmi	126.885	24.621
FO	Trunch borehole	Oligosphaeridium pulcherrimum	Pearce et al., 2020	0.85 in amm_b_Placenticeras polyopsis	84.095	44.541
FO	Salzgitter	Oligosphaeridium pulcherrimum	Jarvis et al., 2021	0.75 in amm_b_Subprionocyclus neptuni	90.125	44.483
FO	Aracaju	Oligosphaeridium pulcherrimum	Santos et al., 2018	0.5 in nan_u_UC6	93.825	-12.563
LO	Aracaju	Oligosphaeridium pulcherrimum	Santos et al., 2018	0.5 in nan_u_UC7	92.055	-13.364
LO	Speeton	Oligosphaeridium pulcherrimum ssp. hirsutum	Duxbury, 2023	0.67 in amm_b_Speetoniceras inversum	130.26	40.906
FO	Speeton	Oligosphaeridium pulcherrimum ssp. hirsutum	Duxbury, 2023	0.25 in amm_b_Speetoniceras inversum	130.667	40.795
FO	Neuquen	Oligosphaeridium quattrocchioae	Volkheimer, 2010	0.5 in stage_Valanginian	135.15	-34.339
LO	Neuquen	Oligosphaeridium quattrocchioae	Volkheimer, 2010	0.5 in stage_Hauterivian	129.55	-35.556
FO	se England	Oligosphaeridium reticulatum	Davey and Williams, 1966b	0 in stage_Cenomanian	100.5	43.221
LO	se England	Oligosphaeridium reticulatum	Davey and Williams, 1966b	1 in stage_Cenomanian	93.9	43.653
LO	Cordebugle	Oligosphaeridium reticulatum	Tocher and Jarvis, 1996	0.55 in amm_b_Mantelliceras mantelli	99.216	41.481
LO	Rodmell	Oligosphaeridium reticulatum	Tocher and Jarvis, 1996	0.2 in amm_b_Mantelliceras mantelli	99.874	43.146
LO	Mudurnu Basin	Oligosphaeridium saghirum	Açikalin et al., 2015	0.33 in plfor_B_P1b	64.777	31.537
FO	Rif	Oligosphaeridium saghirum	Slimani et al., 2012	0.5 in stage_Maastrichtian	69.105	23.869
LO	Rif	Oligosphaeridium saghirum	Slimani et al., 2012	1 in stage_Danian	61.66	23.174
FO	Shandong	Oligosphaeridium speciale	Xu Jinli et al., 1997	0 in stage_Lutetian	48.07	41.922
LO	Shandong	Oligosphaeridium speciale	Xu Jinli et al., 1997	1 in stage_Priabonian	33.9	40.474
FO	Heilongjiang	Oligosphaeridium suibinense	Yu Jingxian, 1982	0 in stage_Valanginian	137.7	53.697
LO	Heilongjiang	Oligosphaeridium suibinense	Yu Jingxian, 1982	1 in stage_Hauterivian	126.5	53.416
LO	Northwest Australia compilation	Oligosphaeridium swanense	Riding and Helby, 2001e	0.75 in stage_Kimmeridgian	150.625	-48.544
FO	Northwest Australia compilation	Oligosphaeridium swanense	Riding and Helby, 2001e	0.1 in stage_Oxfordian	160.855	-41.698
FO	Alberta	Oligosphaeridium tenuiprocessum	Singh, 1983	0.5 in stage_Albian	106.85	63.658
LO	Alberta	Oligosphaeridium tenuiprocessum	Singh, 1983	0.5 in stage_Cenomanian	97.2	64.458
LO	Scotian Margin	Oligosphaeridium totum	Fensome et al., 2008	0.5 between 0 stage_Cenomanian 1 nan_c_NC11	97.24	41.357
LO	Labrador Sea	Oligosphaeridium totum	Nøhr-Hansen, 2025	0.37 in stage_Turonian	92.231	56.885
FO	Alberta	Oligosphaeridium totum	Brideaux, 1971	0.5 in stage_Albian	106.85	63.658
LO	Alberta	Oligosphaeridium totum	Brideaux, 1971	1 in stage_Albian	100.5	64.185
FO	Alberta	Oligosphaeridium totum ssp. minus	Brideaux, 1971	0.5 in stage_Albian	106.85	63.658
LO	Alberta	Oligosphaeridium totum ssp. minus	Brideaux, 1971	1 in stage_Albian	100.5	64.185
FO	Alberta	Oligosphaeridium trabeculosum	Singh, 1983	0.25 in stage_Cenomanian	98.85	64.322
LO	Alberta	Oligosphaeridium trabeculosum	Singh, 1983	0.75 in stage_Cenomanian	95.55	64.595
FO	Alberta	Oligosphaeridium tuberculatum	Dolby, 2019	0 in stage_Aptian	121.4	62.112
LO	Alberta	Oligosphaeridium tuberculatum	Dolby, 2019	0.5 in stage_Albian	106.85	63.658
FO	Tierra del Fuego	Oligosphaeridium tubulatum	Menéndez, 1965	0 in stage_Rupelian	33.9	-56.914
LO	Tierra del Fuego	Oligosphaeridium tubulatum	Menéndez, 1965	1 in stage_Chattian	23.04	-56.172
FO	Q13_14	Oligosphaeridium umbraculum	Duxbury, 2001	0.5 in stage_Hauterivian	129.55	45.019
LO	Q13_14	Oligosphaeridium umbraculum	Duxbury, 2001	1 in stage_Hauterivian	126.5	45.868
FO	Hold With Hope	Oligosphaeridium umbraculum	Nøhr-Hansen et al., 2019	1 in stage_Valanginian	132.6	52.93
LO	Speeton	Oligosphaeridium umbraculum	Duxbury, 2023	0.1 in amm_b_Speetoniceras inversum	130.813	40.756
FO	Speeton	Oligosphaeridium umbraculum	Duxbury, 2023	0.85 in amm_b_Endemoceras regale	131.045	40.707
FO	Northwest Australia compilation	Oligosphaeridium varifenestratum	Vitacca et al., 2022	0.4 in stage_Oxfordian	158.83	-42.38
LO	Northwest Australia compilation	Oligosphaeridium varifenestratum	Vitacca et al., 2022	0.67 in stage_Oxfordian	157.007	-43.474
FO	Yorkshire	Oligosphaeridium vasiformum	Neale and Sarjeant, 1962	0.5 in stage_Hauterivian	129.55	39.649
LO	Yorkshire	Oligosphaeridium vasiformum	Neale and Sarjeant, 1962	1 in stage_Barremian	121.4	41.864
LO	DSDP 400A	Oligosphaeridium verrucosum	Davey, 1979b	0.67 in nan_u_BC22	113.64	38.919
FO	DSDP 400A	Oligosphaeridium verrucosum	Davey, 1979b	0.9 in nan_u_BC21	115.011	38.554
LO	ODP 1172	Oligosphaeridium verrucosum	Brinkhuis et al., 2003b	0.5 in mag_C26r	60.758	-60.721
LO	ODP 638B	Oligosphaeridium verrucosum	Masure, 1988a	0.5 in nan_n_CC6	123.471	34.61
FO	ODP 638B	Oligosphaeridium verrucosum	Masure, 1988a	0.5 in nan_n_CC6	123.471	34.61
FO	Rio Argos	Oligosphaeridium verrucosum	Leereveld, 1997a	0.75 in amm_t_Acanthodiscus radiatus	131.858	24.528
LO	Rio Argos	Oligosphaeridium verrucosum	Leereveld, 1997a	0.1 in amm_t_Toxancyloceras vandenheckii	124.259	24.99
FO	Silesian Basin	Oligosphaeridium verrucosum	Skupien and Vašíček, 2002	0 in amm_t_Acanthohoplites nolani	116.74	37.955
LO	Silesian Basin	Oligosphaeridium verrucosum	Skupien and Vašíček, 2002	1 in amm_t_Leymeriella germanica	111.27	38.763
LO	Western Carpathians	Oligosphaeridium verrucosum	Skupien, 2004	1 in amm_t_Leymeriella germanica	111.27	32.365
FO	Tarim Basin	Oligosphaeridium xinjiangense	He Chengquan, 1991	0 in stage_Danian	66.04	36.871
LO	Tarim Basin	Oligosphaeridium xinjiangense	He Chengquan, 1991	1 in stage_Bartonian	37.71	38.294