Data plotted here is from DINOSTRAT, available via Zenodo: DOI: 10.5281/zenodo.7791273. Please cite Bijl, 2022 https://doi.org/10.5194/essd-14-579-2022 when using this data.


Plots are based on the following information

Location	Taxon	Source	Calibration	Age (Ma)	Paleolatitude
Kimmeridge Clay N Yorkshire	Impletosphaeridium ehrenbergii	Bailey et al., 1997	0.55 in amm_b_Pectinatites hudlestoni	147.57600000000002	NA
North Sea Compilation	Impletosphaeridium polytrichum	Riding and Thomas, 1992	0 in amm_b_Parkinsonia parkinsoni	168.72	39.843156400000005
403-406	Impletosphaeridium cracens	Costa and Downie, 1979	0.95 in nan_n_NP13	48.8920475	47.01702414184605
Haldager 1	Impletosphaeridium tribuliferum	Davey, 1982	0 in amm_b_Paracraspedites oppressus	144.13	43.97580318888889
Kandern	Impletosphaeridium tribuliferum	Dimter and Smelror, 1990	0.2 in amm_b_Sigaloceras calloviense	163.79	37.38662826
Scotian Margin	Impletosphaeridium capitatum	Fensome et al., 2008	0.75 in nan_c_NC18	80.04408000000001	38.66205980822222
Volga Basin	Impletosphaeridium lumectum	Harding et al., 2011	1 in amm_r_Surites tzikwinianus	137.59	45.230872822222224
765	Impletosphaeridium pachydermum	Helby and McMinn, 1992	0.8 in nan_n_CC3	133.85468154484076	-53.33822804039858
Trunch borehole	Impletosphaeridium banterwickense	Pearce et al., 2020	0.75 in amm_b_Acanthoceras rhotomagense	95.77250000000001	NA
Trunch borehole	Impletosphaeridium banterwickense	Pearce et al., 2020	0.67 in amm_b_Paratexanites serratomarginatus	86.5352	45.479449987428566
Bohemian Basin	Impletosphaeridium clavulum	Olde et al., 2015	0.75 in nan_u_UC8	90.195	43.318738409999995
Czestochowa	Impletosphaeridium varispinosum	Poulsen, 1998	1 in amm_t_Hecticoceras retrocostatum	165.5	41.83344666666667
Czestochowa	Impletosphaeridium ehrenbergii	Poulsen, 1998	1 in amm_t_Procerites aurigerus	166.97	42.01300226666667
Czestochowa	Impletosphaeridium polytrichum	Poulsen, 1998	0.5 in amm_t_Procerites aurigerus	167.26999999999998	42.04964626666666
Czestochowa	Impletosphaeridium ehrenbergii	Poulsen, 1998	0.75 in amm_t_Procerites aurigerus	167.12	42.031324266666665
Czestochowa	Impletosphaeridium varispinosum	Poulsen, 1998	0 in amm_b_Sigaloceras calloviense	163.87	41.634347600000005
Czestochowa	Impletosphaeridium polytrichum	Poulsen, 1998	0.5 in amm_b_Sigaloceras calloviense	163.67000000000002	41.60991826666667
east Kent	Impletosphaeridium clavulum	Prince et al., 2008	0.8 in amm_b_Gauthiericeras margae	87.618	44.87090882571429
east Kent	Impletosphaeridium clavulum	Prince et al., 2008	0.95 in amm_b_Placenticeras polyopsis	83.965	44.22943680714286
Silesian Basin	Impletosphaeridium clavulum	Skupien and Vašíček, 2002	0 in amm_t_Imerites giraudi	122.01	37.5568
Caucasus	Impletosphaeridium ehrenbergii	Smelror and Lominadze, 1989	1 in amm_b_Kosmoceras jason	163.3	37.5975
Figueira Da Foz	Impletosphaeridium ehrenbergii	Smelror et al., 1991	0 in amm_t_Bullatimorphites bullatus	165.29	31.05358789
Zaragoza	Impletosphaeridium ehrenbergii	Smelror et al., 1991	0 in amm_t_Macrocephalites gracilis	164.68	29.4549622
Milne Land	Impletosphaeridium polytrichum	Smelror, 1988a	1 in amm_b_Erymnoceras coronatum	162.91	50.7183649625
Milne Land	Impletosphaeridium ehrenbergii	Smelror, 1988a	0.25 in amm_b_Quenstedtoceras mariae	161.0625	50.867395859375
Milne Land	Impletosphaeridium polytrichum	Smelror, 1988a	0.75 in amm_b_Sigaloceras calloviense	163.57	50.6651252375
Kong Karls Land	Impletosphaeridium polytrichum	Smelror, 1988b	1 in amm_b_Peltoceras athleta	162.45	66.84180267857144
Shukheir-1	Impletosphaeridium prolatum	Soliman et al., 2012	0.25 in nan_n_NN3	18.87	22.187697046153847
Shukheir-1	Impletosphaeridium prolatum	Soliman et al., 2012	1 in nan_n_NN4	14.86	23.51387190769231
Fumichon	Impletosphaeridium clavulum	Tocher and Jarvis, 1994	0.2 in amm_t_Mantelliceras dixoni	97.944	41.631875952
Duneau	Impletosphaeridium clavulum	Tocher and Jarvis, 1995	0.25 in amm_t_Metoicoceras geslinianum	94.465	41.91194445714286
Rodmell	Impletosphaeridium clavulum	Tocher and Jarvis, 1996	0.5 in amm_b_Mantelliceras mantelli	99.31	43.234543153333334
Crimea	Impletosphaeridium panniforme	Vasilyeva and Musatov, 2022	0.95 in nan_a_CNE11	43.6825475	19.18071873388125
North Sea Basin	Impletosphaeridium varispinosum	Copestake and Partington, 2023	1 in amm_b_Sigaloceras calloviense	163.47	43.17481802857143

Histogram