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
LO	Scotian Margin	Chlamydophorella ambigua	Williams et al., 1993	0 in stage_Coniacian	89.39	40.035
FO	Scotian Margin	Chlamydophorella ambigua	Williams et al., 1993	0.6 in stage_Hauterivian	128.94	35.512
LO	North Sea Compilation	Chlamydophorella ambigua	Powell, 1992	0.5 in nan_n_NN8	10.73	49.126
FO	Australia synthesis	Chlamydophorella ambigua	Helby et al., 1987	0.4 in stage_Barremian	124.46	-53.928
LO	Australia synthesis	Chlamydophorella ambigua	Helby et al., 1987	0.55 in stage_Coniacian	87.36	-51.845
LO	East Kent	Chlamydophorella ambigua	Prince et al., 2008	0.86 in amm_b_Placenticeras polyopsis	84.082	43.743
FO	ODP 638B	Chlamydophorella ambigua	Masure, 1988a	0.5 in nan_n_CC6	123.471	34.61
LO	Pueblo	Chlamydophorella ambigua	Dodsworth, 2000	0.25 in amm_b_Mammites nodosoides	93.238	45.73
LO	ODP 765	Chlamydophorella ambigua	Helby and McMinn, 1992	0.7 in nan_n_CC7a	120.037	-49.11
FO	ODP 765	Chlamydophorella ambigua	Helby and McMinn, 1992	0.33 in mag_M1n	122.996	-49.636
LO	Meer	Chlamydophorella ambigua	Slimani et al., 2011	0.9 in stage_Campanian	73.318	42.117
FO	Meer	Chlamydophorella ambigua	Slimani et al., 2011	0.65 in stage_Maastrichtian	68.186	41.658
LO	Meer	Chlamydophorella ambigua	Slimani et al., 2011	0.25 in stage_Danian	64.945	41.369
LO	Marlborough	Chlamydophorella ambigua	Schiøler and Wilson, 1998	0.5 in stage_Coniacian	87.545	-68.57
LO	Trunch borehole	Chlamydophorella ambigua	Pearce et al., 2020	1 in amm_b_Acanthoceras rhotomagense	95.67	45.571
FO	Duneau	Chlamydophorella ambigua	Tocher and Jarvis, 1995	0 in amm_t_Mantelliceras mantelli	100.25	41.471
LO	Culver Cliff	Chlamydophorella ambigua	Pearce et al., 2020	0.5 in amm_b_Metoicoceras geslinianum	94.36	43.44
FO	DSDP 263	Chlamydophorella ambigua	Oosting et al., 2006	0.6 in amm_t_Toxancyloceras vandenheckii	123.554	-52.977
LO	Speeton	Chlamydophorella ambigua ssp. hystrix	Duxbury, 2023	0.95 in amm_b_Simbirskites variabilis	126.538	41.918
FO	Speeton	Chlamydophorella ambigua ssp. hystrix	Duxbury, 2023	0.18 in amm_b_Endemoceras regale	131.648	40.742
LO	Northwest Australia compilation	Chlamydophorella angusta	Riding and Helby, 2001f	0.05 in stage_Berriasian	142.83	-51.428
FO	Northwest Australia compilation	Chlamydophorella angusta	Riding and Helby, 2001f	0.75 in stage_Tithonian	144.635	-50.761
LO	Australia synthesis	Chlamydophorella attenuata	Helby et al., 1987	0.2 in stage_Hauterivian	131.38	-54.253
FO	Australia synthesis	Chlamydophorella attenuata	Helby et al., 1987	0.15 in stage_Valanginian	136.935	-52.999
LO	ODP 765	Chlamydophorella attenuata	Helby and McMinn, 1992	0.8 in nan_n_CC3	133.855	-51.695
FO	Vocontian Basin	Chlamydophorella caminus	Duxbury, 2024	0.17 in amm_t_Thurmanniceras pertransiens	137.442	30.102
LO	Vocontian Basin	Chlamydophorella caminus	Duxbury, 2024	1 in amm_t_Neocomites peregrinus	133.09	29.867
FO	Stevns Klint	Chlamydophorella delicata	Hultberg, 1985c	0 in stage_Danian	66.04	45.532
LO	Stevns Klint	Chlamydophorella delicata	Hultberg, 1985c	1 in stage_Danian	61.66	45.175
LO	ODP 748	Chlamydophorella discreta	Mao Shaozhi and Mohr, 1992	0.2 in nan_n_CC24	71.826	-60.673
LO	Stevns Klint	Chlamydophorella discreta	Surlyk et al., 2013	0.25 in nan_u_UC20d	66.969	45.618
FO	Stevns Klint	Chlamydophorella discreta	Surlyk et al., 2013	1 in nan_u_UC20b	67.818	45.696
LO	East Kent	Chlamydophorella discreta	Prince et al., 2008	0.99 in amm_b_Placenticeras polyopsis	83.913	43.726
LO	Isle of Wright	Chlamydophorella discreta	Clarke and Verdier, 1967	1 in stage_Campanian	72.17	41.042
FO	Tarfaya	Chlamydophorella discreta	Prauss, 2015	0.95 in plfor_A_Helvetoglobotruncana helvetica	89.939	20.999
LO	Tarfaya	Chlamydophorella discreta	Prauss, 2015	0.85 in plfor_A_Dicarinella asymetrica	80.271	18.831
LO	Milne Land	Chlamydophorella ectotabulata	Smelror, 1988a	0.5 in amm_b_Cardioceras cordatum	159.38	51.003
FO	Milne Land	Chlamydophorella ectotabulata	Smelror, 1988a	0.5 in amm_b_Erymnoceras coronatum	163.105	50.703
FO	Bylot Island	Chlamydophorella ejuncida	Williams and Fensome, 2025	0.5 in stage_Coniacian	87.545	68.952
LO	Bylot Island	Chlamydophorella ejuncida	Williams and Fensome, 2025	0.8 in stage_Campanian	74.466	67.581
FO	Malla Johar	Chlamydophorella fenestrata	Jain et al., 1984	0 in stage_Kimmeridgian	154.78	-32.054
LO	Malla Johar	Chlamydophorella fenestrata	Jain et al., 1984	0.5 in stage_Tithonian	146.17	-37.39
FO	Southern Carnarvon Basin	Chlamydophorella haigii	Backhouse, 2006	0 in stage_Albian	113.2	-56.713
LO	Southern Carnarvon Basin	Chlamydophorella haigii	Backhouse, 2006	0.5 in stage_Albian	106.85	-57.536
FO	Alberta	Chlamydophorella lagrissima	Singh, 1971	0.25 in stage_Albian	110.025	63.395
LO	Alberta	Chlamydophorella lagrissima	Singh, 1971	0.75 in stage_Albian	103.675	63.922
LO	Australia synthesis	Chlamydophorella lowii	Helby et al., 1987	0.45 in stage_Hauterivian	129.855	-54.162
FO	Australia synthesis	Chlamydophorella lowii	Helby et al., 1987	0.5 in stage_Valanginian	135.15	-53.933
LO	DSDP 263	Chlamydophorella lowii	Oosting et al., 2006	0.5 in stage_Barremian	123.95	-52.995
LO	North Sea Compilation	Chlamydophorella membranoperforata	Duxbury, 2019	0 in stage_Aptian	121.4	41.669
FO	Speeton	Chlamydophorella membranoperforata	Duxbury, 2023	0.75 in amm_b_Speetoniceras inversum	130.183	40.927
FO	Sarstedt	Chlamydophorella membranoperforata	Below, 1982d	0.5 in stage_Barremian	123.95	40.434
LO	Sarstedt	Chlamydophorella membranoperforata	Below, 1982d	1 in stage_Barremian	121.4	41.146
LO	Stevns Klint	Chlamydophorella multifibrata	Surlyk et al., 2013	0.25 in nan_u_UC20d	66.969	45.618
FO	Stevns Klint	Chlamydophorella multifibrata	Surlyk et al., 2013	0 in nan_u_UC16a	80.97	46.907
FO	Dan Field	Chlamydophorella multifibrata	Schiøler, 1993	0 in stage_Maastrichtian	72.17	46.119
LO	Dan Field	Chlamydophorella multifibrata	Schiøler, 1993	1 in stage_Maastrichtian	66.04	45.571
LO	ODP 748	Chlamydophorella nyei	Mao Shaozhi and Mohr, 1992	0.8 in nan_n_CC24	70.564	-60.735
FO	ODP 748	Chlamydophorella nyei	Mohr and Mao Shaozhi, 1997	0.1 in stage_Campanian	82.502	-60.237
LO	Scotian Margin	Chlamydophorella nyei	Fensome et al., 2008	0.5 between 1 nan_c_NC12 1 nan_c_NC17	88.343	39.638
LO	Stevns Klint	Chlamydophorella nyei	Surlyk et al., 2013	0.5 in nan_u_UC20b	68.407	45.75
FO	Stevns Klint	Chlamydophorella nyei	Surlyk et al., 2013	1 in nan_u_UC16b	77.563	46.593
LO	East Kent	Chlamydophorella nyei	Prince et al., 2008	0.925 in amm_b_Placenticeras polyopsis	83.998	43.734
FO	Isle of Wright	Chlamydophorella nyei	Duxbury, 1983	0.3 in amm_b_Deshayesites deshayesi	119.712	40.21
LO	Isle of Wright	Chlamydophorella nyei	Duxbury, 1983	0.1 in amm_b_Epicheloniceras martinoides	118.637	40.55
LO	ODP 638B	Chlamydophorella nyei	Masure, 1988a	0.2 in nan_n_CC4b	130.463	33.99
FO	ODP 638B	Chlamydophorella nyei	Masure, 1988a	1 in nan_n_CC3b	132.966	34.487
LO	Omsk No. 8	Chlamydophorella nyei	Lebedeva et al., 2013	0.5 in mag_C31r	70.361	51.537
LO	Q13_14	Chlamydophorella nyei	Duxbury, 2001	1 in amm_b_Epicheloniceras martinoides	117.53	48.466
LO	Salzburg	Chlamydophorella nyei	Boorova et al., 1999	0.2 in stage_Valanginian	136.68	28.805
FO	Salzburg	Chlamydophorella nyei	Boorova et al., 1999	0.1 in stage_Valanginian	137.19	28.88
LO	Labrador Sea	Chlamydophorella nyei	Nøhr-Hansen, 2025	0.59 in stage_Coniacian	87.213	56.06
FO	Rio Argos	Chlamydophorella nyei	Leereveld, 1997b	0.2 in amm_t_Tirnovella alpillensis	138.302	25.384
LO	Banks Island	Chlamydophorella nyei	Williams et al., 2025	0.5 in stage_Cenomanian	97.2	80.307
FO	Cape Nares	Chlamydophorella nyei	Williams et al., 2025	0.67 in stage_Turonian	90.878	79.822
LO	Cape Nares	Chlamydophorella nyei	Williams et al., 2025	0.5 in stage_Maastrichtian	69.105	77.576
LO	Snøvit field	Chlamydophorella nyei	Radmacher et al., 2014a	1 in stage_Santonian	83.65	63.365
LO	Rio Argos	Chlamydophorella ordinalis	Leereveld, 1997a	1 in amm_t_Gerhardtia sartousi	122.01	25.305
LO	Vocontian Basin	Chlamydophorella ordinalis	Duxbury, 2024	0.75 in amm_t_Acanthodiscus radiatus	131.858	29.793
FO	Vocontian Basin	Chlamydophorella ordinalis	Duxbury, 2024	0.1 in amm_t_Criosarasinella furcillata	133.041	29.864
FO	Speeton	Chlamydophorella ordinalis	Davey, 1974	0 in stage_Aptian	121.4	43.315
FO	Central Alborz Mountains	Chlamydophorella ovulum	Wheeler and Sarjeant, 1990	0.5 in stage_Callovian	163.41	38.304
LO	Central Alborz Mountains	Chlamydophorella ovulum	Wheeler and Sarjeant, 1990	0.5 in stage_Oxfordian	158.155	35.903
FO	North Bulgaria	Chlamydophorella raritabulata	Dodekova, 1975	0.5 in stage_Bathonian	166.73	37.524
LO	North Bulgaria	Chlamydophorella raritabulata	Dodekova, 1975	1 in stage_Bathonian	165.29	37.201
FO	Shandong	Chlamydophorella regularis	Xu Jinli et al., 1997	0 in stage_Rupelian	33.9	40.474
LO	Shandong	Chlamydophorella regularis	Xu Jinli et al., 1997	1 in stage_Chattian	23.04	40.17
FO	Northwest Australia compilation	Chlamydophorella solida	Morgan, 1980	0.5 in stage_Aptian	117.3	-50.446
LO	Northwest Australia compilation	Chlamydophorella solida	Morgan, 1980	0.25 in stage_Albian	110.025	-50.22
FO	Bakonyi Mountains	Chlamydophorella suemegensis	Góczán, 1962	0 in stage_Aptian	121.4	28.131
LO	Bakonyi Mountains	Chlamydophorella suemegensis	Góczán, 1962	0.5 in stage_Aptian	117.3	29.525
FO	Alberta	Chlamydophorella tabulata	Singh, 1971	0.25 in stage_Albian	110.025	63.395
LO	Alberta	Chlamydophorella tabulata	Singh, 1971	0.75 in stage_Albian	103.675	63.922
LO	Scotian Margin	Chlamydophorella trabeculosa	Williams et al., 1993	0.75 in stage_Albian	103.675	40.505
FO	Scotian Margin	Chlamydophorella trabeculosa	Williams et al., 1993	0.2 in stage_Hauterivian	131.38	35.449
LO	North Sea Compilation	Chlamydophorella trabeculosa	Costa and Davey, 1992	0.4 in amm_b_Hypacanthoplites jacobi	114.16	43.735
FO	North Sea Compilation	Chlamydophorella trabeculosa	Costa and Davey, 1992	0 in amm_b_Speetoniceras inversum	130.91	39.329
LO	DSDP 400A	Chlamydophorella trabeculosa	Davey, 1979b	0.67 in nan_u_BC22	113.64	38.919
LO	Isle of Wright	Chlamydophorella trabeculosa	Duxbury, 1983	0.2 in amm_b_Deshayesites deshayesi	119.798	40.183
LO	Isle of Wright	Chlamydophorella trabeculosa	Duxbury, 1983	0.22 in amm_b_Deshayesites deshayesi	119.781	40.188
FO	Arctic Basin	Chlamydophorella trabeculosa	Williams et al., 2025	0.5 in stage_Valanginian	135.15	70.093
LO	Central Danish Trough	Chlamydophorella trabeculosa	Heilmann-Clausen, 1987	1 in amm_b_Proleymeriella schrammeni	111.27	47.394
FO	Central Danish Trough	Chlamydophorella trabeculosa	Heilmann-Clausen, 1987	0 in amm_b_Paratollia/Platylenticeras	136.59	43.052
FO	Haldager 1	Chlamydophorella trabeculosa	Davey, 1982	0 in amm_b_Endemoceras regale	131.81	43.633
FO	Rio Argos	Chlamydophorella trabeculosa	Leereveld, 1997b	1 in amm_t_Tirnovella alpillensis	137.59	25.325
FO	Broyon	Chlamydophorella trabeculosa	Monteil, 1992a	0 in amm_t_Neocomites neocomiensiformis	136.72	31.563
FO	Speeton	Chlamydophorella trabeculosa	Duxbury, 2023	0.1 in amm_b_Speetoniceras inversum	130.813	40.756
FO	Australia synthesis	Chlamydophorella urna	Cookson and Eisenack, 1960a	0.5 in stage_Albian	106.85	-53.964
LO	Australia synthesis	Chlamydophorella urna	Cookson and Eisenack, 1960a	1 in stage_Cenomanian	93.9	-55.275
FO	New Guinea	Chlamydophorella wallala	Cookson and Eisenack, 1960b	0 in stage_Oxfordian	161.53	-48.242
LO	New Guinea	Chlamydophorella wallala	Cookson and Eisenack, 1960b	0.5 in stage_Kimmeridgian	152.01	-52.967