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	Westfalen	Heslertonia cylindrata	Yun Hyesu, 1981	0 in stage_Santonian	85.7	43.234
LO	Westfalen	Heslertonia cylindrata	Yun Hyesu, 1981	0.5 in stage_Santonian	84.675	43.137
LO	North Sea Compilation	Heslertonia heslertonensis	Costa and Davey, 1992	0.5 in amm_b_Deshayesites deshayesi	119.54	42.207
FO	North Sea Compilation	Heslertonia heslertonensis	Costa and Davey, 1992	0 in amm_b_Peregrinoceras albidum	137.81	39.7
LO	North Sea Compilation	Heslertonia heslertonensis	Duxbury, 2019	0.8 in stage_Aptian	114.84	43.672
LO	Isle of Wright	Heslertonia heslertonensis	Duxbury, 1983	0.4 in amm_b_Deshayesites deshayesi	119.626	40.237
LO	Q13_14	Heslertonia heslertonensis	Duxbury, 2001	0.2 in amm_b_Deshayesites deshayesi	119.798	47.741
FO	Arctic Basin	Heslertonia heslertonensis	Williams et al., 2025	0 in stage_Berriasian	143.1	71.271
LO	Central Danish Trough	Heslertonia heslertonensis	Heilmann-Clausen, 1987	0.5 in amm_b_Deshayesites deshayesi	119.54	45.612
FO	Central Danish Trough	Heslertonia heslertonensis	Heilmann-Clausen, 1987	0 in amm_b_Peregrinoceras albidum	137.81	43.103
FO	Haldager 1	Heslertonia heslertonensis	Davey, 1982	0 in amm_b_Stolcoceras tuberculatum	133.09	43.686
FO	Rio Argos	Heslertonia heslertonensis	Leereveld, 1997a	0.95 in amm_t_Crioceratites loryi	130.945	24.359
FO	Broyon	Heslertonia heslertonensis	Monteil, 1992a	0.25 in amm_t_Saynoceras verrucosum	135.188	31.493
LO	Boyarka	Heslertonia heslertonensis	Shulgina et al., 1994	0.5 in amm_s_Unzoned	136.07	68.483
FO	Boyarka	Heslertonia heslertonensis	Shulgina et al., 1994	0.5 in amm_s_Unzoned	136.07	68.483
FO	Vocontian Basin	Heslertonia inferior	Duxbury, 2024	0.95 in amm_t_Tirnovella alpillensis	137.635	30.112
LO	Vocontian Basin	Heslertonia inferior	Duxbury, 2024	1 in amm_t_Saynoceras verrucosum	134.55	29.956
LO	Dorset-Yorkshire	Heslertonia pellucida	Gitmez, 1970	0.5 in stage_Kimmeridgian	152.01	39.154
FO	Haldager 1	Heslertonia pellucida	Davey, 1982	0.5 in amm_b_Peregrinoceras albidum	137.2	43.803
FO	Westfalen	Heslertonia regula	Yun Hyesu, 1981	0 in stage_Santonian	85.7	43.234
LO	Westfalen	Heslertonia regula	Yun Hyesu, 1981	0.5 in stage_Santonian	84.675	43.137
LO	Vocontian Basin	Heslertonia reticulata	Duxbury, 2024	0.55 in amm_t_Saynoceras verrucosum	134.933	29.979
FO	Vocontian Basin	Heslertonia reticulata	Duxbury, 2024	0.25 in amm_t_Neocomites peregrinus	134.185	29.934
FO	North Sea Compilation	Heslertonia senecta	Harding, 1990b	0.5 in stage_Barremian	123.95	40.958
LO	North Sea Compilation	Heslertonia senecta	Harding, 1990b	1 in stage_Barremian	121.4	41.669
LO	Australia synthesis	Heslertonia striata	Eisenack and Cookson, 1960	1 in stage_Cenomanian	93.9	-55.275
FO	ODP 765	Heslertonia striata	Helby and McMinn, 1992	0 in nan_n_CC7b	119.401	-49.045