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	North Sea Compilation	Nannoceratopsis ambonis	Copestake and Partington, 2023	1 in amm_b_Hyperlioceras discites	170.67	39.918
FO	North Sea Compilation	Nannoceratopsis ambonis	Copestake and Partington, 2023	0 in amm_b_Leioceras opalinum	174.7	40.774
FO	Champagne	Nannoceratopsis ambonis	Fauconnier, 1995	0 in amm_b_Hildoceras bifrons	181.17	40.821
LO	Champagne	Nannoceratopsis ambonis	Fauconnier, 1995	1 in amm_b_Witchellia laeviuscula	170.32	37.363
LO	Salzburg	Nannoceratopsis ambonis	Boorova et al., 1999	0.2 in stage_Valanginian	136.68	28.805
FO	Salzburg	Nannoceratopsis ambonis	Boorova et al., 1999	0.1 in stage_Valanginian	137.19	28.88
FO	Dorset-Yorkshire	Nannoceratopsis ambonis	Woollam and Riding, 1983	1 in amm_b_Dumortieria pseudoradiosa	175.91	39.313
LO	Dorset-Yorkshire	Nannoceratopsis ambonis	Woollam and Riding, 1983	1 in amm_b_Hyperlioceras discites	170.67	38.206
FO	North Yorkshire	Nannoceratopsis ambonis	Bucefalo Palliani and Riding, 2000	1 in amm_b_Harpoceras serpentinum	181.17	43.289
FO	Yorkshire	Nannoceratopsis ambonis	Bucefalo Palliani and Riding, 2003	0 in amm_t_Hildoceras bifrons	181.17	42.056
FO	Quercy	Nannoceratopsis ambonis	Bucefalo Palliani and Riding, 1997b	0 in amm_t_Grammoceras thouarsense	178.34	34.36
LO	Quercy	Nannoceratopsis ambonis	Bucefalo Palliani and Riding, 1997b	1 in amm_b_Pleydellia aalensis	174.7	33.009
FO	Portugal	Nannoceratopsis ambonis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Dactylioceras tenuicostatum	184.2	31.839
FO	southern France	Nannoceratopsis ambonis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Dactylioceras tenuicostatum	184.2	36.498
FO	Scotian Margin	Nannoceratopsis deflandrei	Williams et al., 1993	0 in stage_Bathonian	168.17	28.992
LO	Czestochowa	Nannoceratopsis deflandrei	Poulsen, 1998	1 in amm_t_Morrisiceras morrisi	166.04	41.996
FO	Northwest Australia compilation	Nannoceratopsis deflandrei	Riding et al., 2010	0 in stage_Bajocian	170.9	-38.317
LO	Northwest Australia compilation	Nannoceratopsis deflandrei	Riding et al., 2010	0.67 in stage_Bajocian	169.071	-38.932
LO	Denmark synthesis	Nannoceratopsis deflandrei	Poulsen and Riding, 2003 sensu Riding et al., 2010	0.55 in stage_Bajocian	169.398	45.342
FO	Siberia	Nannoceratopsis deflandrei ssp. anabarensis	Ilyina et al., 1994	0.5 in stage_Pliensbachian	188.55	63.851
LO	Siberia	Nannoceratopsis deflandrei ssp. anabarensis	Ilyina et al., 1994	0.5 in stage_Toarcian	179.45	59.565
LO	Scotian Margin	Nannoceratopsis deflandrei ssp. senex	Williams et al., 1993	0.15 in stage_Aalenian	174.13	28.072
FO	Scotian Margin	Nannoceratopsis deflandrei ssp. senex	Williams et al., 1993	0.65 in stage_Pliensbachian	187.245	27.222
LO	North Sea Compilation	Nannoceratopsis deflandrei ssp. senex	Copestake and Partington, 2023	0.75 in amm_b_Garantiana garantiana	168.858	39.96
FO	North Sea Compilation	Nannoceratopsis deflandrei ssp. senex	Copestake and Partington, 2023	0.5 in amm_b_Prodactylioceras davoei	188.2	42.576
FO	Bavaria	Nannoceratopsis deflandrei ssp. senex	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	42.833
FO	Arctic Basin	Nannoceratopsis deflandrei ssp. senex	Bujak et al., 2022	0 in amm_b_Grammoceras thouarsense	178.34	72.814
LO	Arctic Basin	Nannoceratopsis deflandrei ssp. senex	Bujak et al., 2022	0 in stage_Bajocian	170.9	72.716
FO	Champagne	Nannoceratopsis deflandrei ssp. senex	Fauconnier, 1995	0 in amm_b_Hildoceras bifrons	181.17	40.821
LO	Champagne	Nannoceratopsis deflandrei ssp. senex	Fauconnier, 1995	1 in amm_b_Witchellia laeviuscula	170.32	37.363
FO	Denmark synthesis	Nannoceratopsis deflandrei ssp. senex	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	48.421
FO	North Yorkshire	Nannoceratopsis deflandrei ssp. senex	Bucefalo Palliani and Riding, 2000	0 in amm_b_Dactylioceras tenuicostatum	184.2	43.267
LO	Barentz Sea	Nannoceratopsis deflandrei ssp. senex	Smelror, 1994	0.5 in stage_Bajocian	169.535	64.569
FO	Yorkshire	Nannoceratopsis deflandrei ssp. senex	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	41.667
LO	Cabo Mondego	Nannoceratopsis deflandrei ssp. senex	Correia et al., 2019	0.2 in amm_t_Hyperlioceras discites	170.854	30.644
FO	Lusitanian Basin	Nannoceratopsis deflandrei ssp. senex	Correia et al., 2018	0 in amm_b_Amaltheus margaritatus	188	31.653
LO	Lusitanian Basin	Nannoceratopsis deflandrei ssp. senex	Correia et al., 2025a	1 in amm_b_Graphoceras concavum	170.9	30.703
FO	Quercy	Nannoceratopsis deflandrei ssp. senex	Bucefalo Palliani and Riding, 1997b	0 in amm_b_Amaltheus margaritatus	188	35.424
LO	Quercy	Nannoceratopsis deflandrei ssp. senex	Bucefalo Palliani and Riding, 1997b	1 in amm_b_Pleuroceras spinatum	184.2	35.611
FO	Whitby	Nannoceratopsis deflandrei ssp. senex	vd Schootbrugge et al., 2019a	0 in amm_b_Dactylioceras tenuicostatum	184.2	43.433
FO	Hungary synthesis	Nannoceratopsis deflandrei ssp. senex	Bucefalo Palliani and Riding, 2003	0 in amm_b_Uptonia jamesoni	192.9	32.996
FO	Portugal	Nannoceratopsis deflandrei ssp. senex	Bucefalo Palliani and Riding, 2003	0 in amm_b_Uptonia jamesoni	192.9	29.619
FO	southern France	Nannoceratopsis deflandrei ssp. senex	Bucefalo Palliani and Riding, 2003	0 in amm_b_Uptonia jamesoni	192.9	34.813
FO	North Sea Compilation	Nannoceratopsis dictyambonis	Copestake and Partington, 2023	0.6 in amm_b_Dumortieria pseudoradiosa	176.598	41.398
LO	North Sea Compilation	Nannoceratopsis dictyambonis	Copestake and Partington, 2023	1 in amm_b_Witchellia laeviuscula	170.32	39.926
FO	North Sea Compilation	Nannoceratopsis dictyambonis	Riding and Thomas, 1992	0 in amm_b_Dumortieria pseudoradiosa	177.63	41.737
LO	North Sea Compilation	Nannoceratopsis dictyambonis	Riding and Thomas, 1992	1 in amm_b_Witchellia laeviuscula	170.32	39.926
FO	Quercy	Nannoceratopsis dictyambonis	Bucefalo Palliani and Riding, 1997b	0.5 in amm_b_Dumortieria pseudoradiosa	176.77	33.777
LO	Quercy	Nannoceratopsis dictyambonis	Bucefalo Palliani and Riding, 1997b	0.3 in amm_b_Pleydellia aalensis	175.547	33.323
FO	Synthesis N Germany	Nannoceratopsis evae	Prauss, 1989	0.5 in stage_Aalenian	172.8	41.397
LO	Synthesis N Germany	Nannoceratopsis evae	Prauss, 1989	1 in stage_Bajocian	168.17	40.966
FO	North Yorkshire	Nannoceratopsis globiformis	Bucefalo Palliani and Riding, 2000	0.5 in amm_b_Dactylioceras tenuicostatum	183.68	43.33
LO	North Yorkshire	Nannoceratopsis globiformis	Bucefalo Palliani and Riding, 2000	0.5 in amm_b_Harpoceras serpentinum	182.165	43.516
LO	Yorkshire	Nannoceratopsis globiformis	Bucefalo Palliani and Riding, 2003	1 in amm_b_Harpoceras serpentinum	181.17	42.056
FO	Yorkshire	Nannoceratopsis globiformis	Bucefalo Palliani and Riding, 2003	1 in amm_b_Pleuroceras spinatum	184.2	42.084
FO	Quercy	Nannoceratopsis globiformis	Bucefalo Palliani and Riding, 1997b	1 in amm_b_Amaltheus margaritatus	185.6	35.542
LO	Quercy	Nannoceratopsis globiformis	Bucefalo Palliani and Riding, 1997b	1 in amm_b_Pleuroceras spinatum	184.2	35.611
LO	southern France	Nannoceratopsis globiformis	Bucefalo Palliani and Riding, 2003	1 in amm_b_Dactylioceras tenuicostatum	183.16	36.524
FO	southern France	Nannoceratopsis globiformis	Bucefalo Palliani and Riding, 2003	1 in amm_b_Pleuroceras spinatum	184.2	36.498
LO	Scotian Margin	Nannoceratopsis gracilis	Williams et al., 1993	0.75 in stage_Bathonian	166.01	29.597
FO	Scotian Margin	Nannoceratopsis gracilis	Williams et al., 1993	0.4 in stage_Pliensbachian	189.42	26.587
FO	North Sea Compilation	Nannoceratopsis gracilis	Copestake and Partington, 2023	1 in amm_b_Prodactylioceras davoei	188	42.596
LO	North Sea Compilation	Nannoceratopsis gracilis	Copestake and Partington, 2023	0.75 in amm_b_Garantiana garantiana	168.858	39.96
LO	North Sea Compilation	Nannoceratopsis gracilis	Riding and Thomas, 1992	1 in amm_b_Clydoniceras discus	165.29	40.043
FO	Bavaria	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	42.833
FO	Arctic Basin	Nannoceratopsis gracilis	Bujak et al., 2022	0.17 in amm_b_Hildoceras bifrons	180.94	72.896
LO	Arctic Basin	Nannoceratopsis gracilis	Bujak et al., 2022	0.75 in amm_b_Procerites hodsoni	165.8	73.186
FO	Champagne	Nannoceratopsis gracilis	Fauconnier, 1995	0 in amm_b_Amaltheus margaritatus	188	40.755
LO	Champagne	Nannoceratopsis gracilis	Fauconnier, 1995	1 in amm_b_Parkinsonia parkinsoni	168.17	37.366
LO	Czestochowa	Nannoceratopsis gracilis	Poulsen, 1998	0.25 in amm_t_Clydoniceras discus	165.447	41.919
FO	Czestochowa	Nannoceratopsis gracilis	Poulsen, 1998	0.3 in amm_t_Parkinsonia parkinsoni	168.555	42.323
LO	Salzburg	Nannoceratopsis gracilis	Boorova et al., 1999	0.5 in stage_Valanginian	135.15	28.579
LO	Calvados	Nannoceratopsis gracilis	Feist-Burkhardt and Monteil, 1997	1 in amm_t_Stephanoceras humphriesianum	169.74	35.927
FO	Denmark synthesis	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	48.421
FO	Dorset-Yorkshire	Nannoceratopsis gracilis	Woollam and Riding, 1983	0 in amm_b_Amaltheus margaritatus	188	40.45
FO	North Yorkshire	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 2000	0.3 in amm_b_Dactylioceras tenuicostatum	183.888	43.305
LO	Barentz Sea	Nannoceratopsis gracilis	Smelror, 1994	0.5 in stage_Bathonian	166.73	64.868
FO	Yorkshire	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	41.667
LO	Kong Karls Land	Nannoceratopsis gracilis	Smelror, 1988b	1 in amm_b_Dumortieria pseudoradiosa	175.91	66.172
FO	Lusitanian Basin	Nannoceratopsis gracilis	Correia et al., 2018	0 in amm_b_Amaltheus margaritatus	188	31.653
FO	Quercy	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 1997b	0 in amm_t_Grammoceras thouarsense	178.34	34.36
LO	Quercy	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 1997b	0.5 in amm_b_Leioceras opalinum	173.7	32.638
FO	Hausen	Nannoceratopsis gracilis	Feist-Burkhardt, 1990	0.75 in amm_b_Leioceras opalinum	173.2	38.489
LO	Hausen	Nannoceratopsis gracilis	Feist-Burkhardt, 1990	0.5 in amm_b_Witchellia laeviuscula	170.495	37.902
FO	Whitby	Nannoceratopsis gracilis	vd Schootbrugge et al., 2019a	0 in amm_b_Pleuroceras spinatum	185.6	43.258
FO	Hungary synthesis	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	34.553
FO	Portugal	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	31.295
FO	southern France	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	36.403
FO	Bulgaria	Nannoceratopsis gracilis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	38.247
FO	Quercy	Nannoceratopsis gracilis ssp. superba	Bucefalo Palliani and Riding, 1997b	0.5 in stage_Toarcian	179.45	34.772
LO	Quercy	Nannoceratopsis gracilis ssp. superba	Bucefalo Palliani and Riding, 1997b	1 in stage_Aalenian	170.9	32.003
FO	North Yorkshire	Nannoceratopsis magnicornis	Bucefalo Palliani and Riding, 2000	0 in amm_b_Dactylioceras tenuicostatum	184.2	43.267
LO	North Yorkshire	Nannoceratopsis magnicornis	Bucefalo Palliani and Riding, 2000	0.8 in amm_b_Dactylioceras tenuicostatum	183.368	43.368
FO	Yorkshire	Nannoceratopsis magnicornis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Dactylioceras tenuicostatum	184.2	42.084
LO	Yorkshire	Nannoceratopsis magnicornis	Bucefalo Palliani and Riding, 2003	1 in amm_b_Harpoceras serpentinum	181.17	42.056
FO	Quercy	Nannoceratopsis magnicornis	Bucefalo Palliani and Riding, 1997b	1 in amm_b_Amaltheus margaritatus	185.6	35.542
LO	Quercy	Nannoceratopsis magnicornis	Bucefalo Palliani and Riding, 1997b	1 in amm_b_Pleuroceras spinatum	184.2	35.611
LO	southern France	Nannoceratopsis magnicornis	Bucefalo Palliani and Riding, 2003	1 in amm_b_Dactylioceras tenuicostatum	183.16	36.524
FO	southern France	Nannoceratopsis magnicornis	Bucefalo Palliani and Riding, 2003	0 in amm_b_Pleuroceras spinatum	185.6	36.463
LO	Scotian Margin	Nannoceratopsis pellucida	Williams et al., 1993	0.85 in stage_Oxfordian	155.792	32.744
FO	North Sea Compilation	Nannoceratopsis pellucida	Copestake and Partington, 2023	0.6 in amm_b_Procerites progracilis	166.604	40.012
LO	North Sea Compilation	Nannoceratopsis pellucida	Copestake and Partington, 2023	1 in amm_b_Erymnoceras coronatum	162.91	40.098
FO	North Sea Compilation	Nannoceratopsis pellucida	Riding and Thomas, 1992	0 in amm_b_Garantiana garantiana	169.27	39.95
LO	North Sea Compilation	Nannoceratopsis pellucida	Riding and Thomas, 1992	1 in amm_b_Pictonia baylei	153.4	40.181
LO	Arctic Basin	Nannoceratopsis pellucida	Bujak et al., 2022	0.5 in amm_b_Pictonia baylei	154.09	73.087
FO	Caucasus	Nannoceratopsis pellucida	Smelror and Lominadze, 1989	0 in amm_t_Erymnoceras coronatum	163.3	41.178
LO	Caucasus	Nannoceratopsis pellucida	Smelror and Lominadze, 1989	1 in amm_b_Kosmoceras jason	163.3	41.178
FO	Champagne	Nannoceratopsis pellucida	Fauconnier, 1995	0 in amm_b_Stephanoceras humphriesianum	170.09	37.363
LO	Champagne	Nannoceratopsis pellucida	Fauconnier, 1995	1 in amm_b_Peltoceras athleta	162.45	37.374
FO	Czestochowa	Nannoceratopsis pellucida	Poulsen, 1998	0.95 in amm_t_Parkinsonia parkinsoni	168.197	42.276
LO	Czestochowa	Nannoceratopsis pellucida	Poulsen, 1998	0.5 in amm_b_Sigaloceras calloviense	163.67	41.688
LO	Denmark synthesis	Nannoceratopsis pellucida	Poulsen and Riding, 2003 sensu Riding et al., 2010	0.1 in stage_Kimmeridgian	154.226	44.84
LO	Dorset-Yorkshire	Nannoceratopsis pellucida	Woollam and Riding, 1983	1 in amm_b_Pictonia baylei	153.4	39.093
FO	Dorset-Yorkshire	Nannoceratopsis pellucida	Woollam and Riding, 1983	0 in amm_b_Zigzagiceras zigzag	168.17	38.341
LO	North Yorkshire	Nannoceratopsis pellucida	Riding and Thomas, 1988	1 in amm_b_Pictonia baylei	153.4	41.422
FO	Milne Land	Nannoceratopsis pellucida	Smelror, 1988a	0 in amm_b_Clydoniceras discus	165.5	50.509
LO	Milne Land	Nannoceratopsis pellucida	Smelror, 1988a	0.8 in amm_b_Sigaloceras calloviense	163.55	50.667
LO	Kong Karls Land	Nannoceratopsis pellucida	Smelror, 1988b	0.8 in amm_b_Perisphinctes plicatilis	158.5	67.381
FO	North Sea Compilation	Nannoceratopsis plegas	Riding and Thomas, 1992	0 in amm_b_Leioceras opalinum	174.7	40.774
LO	North Sea Compilation	Nannoceratopsis plegas	Riding and Thomas, 1992	1 in amm_b_Leioceras opalinum	172.7	40.117
FO	Champagne	Nannoceratopsis plegas	Fauconnier, 1995	0 in amm_b_Hildoceras bifrons	181.17	40.821
LO	Champagne	Nannoceratopsis plegas	Fauconnier, 1995	1 in amm_b_Leioceras opalinum	172.7	37.625
FO	Denmark synthesis	Nannoceratopsis plegas	Bucefalo Palliani and Riding, 2003	0 in amm_t_Hildoceras bifrons	181.17	48.627
FO	Quercy	Nannoceratopsis plegas	Bucefalo Palliani and Riding, 1997b	0.75 in amm_t_Grammoceras thouarsense	177.808	34.162
LO	Quercy	Nannoceratopsis plegas	Bucefalo Palliani and Riding, 1997b	1 in amm_b_Pleydellia aalensis	174.7	33.009
FO	Synthesis N Germany	Nannoceratopsis plegas ssp. brevicorna	Prauss, 1989	0.5 in stage_Toarcian	179.45	43.934
LO	Synthesis N Germany	Nannoceratopsis plegas ssp. brevicorna	Prauss, 1989	1 in stage_Bajocian	168.17	40.966
FO	Synthesis N Germany	Nannoceratopsis plegas ssp. dictyornata	Prauss, 1989	0 in stage_Aalenian	174.7	42.122
LO	Synthesis N Germany	Nannoceratopsis plegas ssp. dictyornata	Prauss, 1989	1 in stage_Aalenian	170.9	41.056
FO	Kachchh	Nannoceratopsis radiata	Kumar, 1986b	0 in stage_Kimmeridgian	154.78	-27.03
LO	Kachchh	Nannoceratopsis radiata	Kumar, 1986b	1 in stage_Tithonian	143.1	-33.727
FO	Denmark synthesis	Nannoceratopsis raunsgaardii	Bucefalo Palliani and Riding, 2003	0 in amm_b_Pleuroceras spinatum	185.6	48.621
FO	North Yorkshire	Nannoceratopsis raunsgaardii	Bucefalo Palliani and Riding, 2000	0.2 in amm_b_Harpoceras serpentinum	182.762	43.443
LO	North Yorkshire	Nannoceratopsis raunsgaardii	Bucefalo Palliani and Riding, 2000	0.4 in amm_b_Harpoceras serpentinum	182.364	43.491
FO	Yorkshire	Nannoceratopsis raunsgaardii	Bucefalo Palliani and Riding, 2003	0 in amm_b_Pleuroceras spinatum	185.6	41.93
FO	Timor Sea	Nannoceratopsis reticulata	Mantle, 2005	0 in stage_Callovian	165.29	-41.506
LO	Timor Sea	Nannoceratopsis reticulata	Mantle, 2005	0.5 in stage_Oxfordian	158.155	-43.829
FO	Denmark synthesis	Nannoceratopsis ridingii	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	48.421
FO	Denmark synthesis	Nannoceratopsis ridingii	Poulsen, 1992	0 in stage_Toarcian	184.2	48.738
LO	Denmark synthesis	Nannoceratopsis ridingii	Poulsen, 1992	0.5 in stage_Toarcian	179.45	48.019
FO	Whitby	Nannoceratopsis ridingii	vd Schootbrugge et al., 2019a	0.4 in amm_t_Hildoceras bifrons	180.63	43.303
LO	North Sea Compilation	Nannoceratopsis spiculata	Copestake and Partington, 2023	0.2 in amm_b_Sigaloceras calloviense	163.79	40.078
FO	North Sea Compilation	Nannoceratopsis spiculata	Riding and Thomas, 1992	0 in amm_t_Hildoceras bifrons	181.17	42.9
LO	North Sea Compilation	Nannoceratopsis spiculata	Riding and Thomas, 1992	1 in amm_b_Oxycerites orbis	165.5	40.038
FO	Bavaria	Nannoceratopsis spiculata	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	42.833
FO	Czestochowa	Nannoceratopsis spiculata	Poulsen, 1998	0.85 in amm_t_Parkinsonia parkinsoni	168.252	42.283
FO	Calvados	Nannoceratopsis spiculata	Feist-Burkhardt and Monteil, 1997	0.5 in amm_b_Stephanoceras humphriesianum	169.915	35.92
FO	Denmark synthesis	Nannoceratopsis spiculata	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	48.421
LO	North Sea Coast	Nannoceratopsis spiculata	Riley and Fenton, 1982	1 in amm_b_Macrocephalites herveyi	164.6	36.505
FO	Yorkshire	Nannoceratopsis spiculata	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	41.667
FO	Quercy	Nannoceratopsis spiculata	Bucefalo Palliani and Riding, 1997b	0.75 in amm_t_Grammoceras thouarsense	177.808	34.162
LO	Quercy	Nannoceratopsis spiculata	Bucefalo Palliani and Riding, 1997b	0.25 in amm_b_Leioceras opalinum	174.2	32.823
FO	Northwest Australia compilation	Nannoceratopsis spinosa	Riding et al., 2010	0 in stage_Toarcian	184.2	-31.87
LO	Northwest Australia compilation	Nannoceratopsis spinosa	Riding et al., 2010	0.25 in stage_Toarcian	181.825	-32.584
FO	North Yorkshire	Nannoceratopsis symmetrica	Bucefalo Palliani and Riding, 2000	0 in amm_b_Dactylioceras tenuicostatum	184.2	43.267
LO	North Yorkshire	Nannoceratopsis symmetrica	Bucefalo Palliani and Riding, 2000	1 in amm_b_Harpoceras serpentinum	181.17	43.289
FO	Yorkshire	Nannoceratopsis symmetrica	Bucefalo Palliani and Riding, 2003	0 in amm_b_Dactylioceras tenuicostatum	184.2	42.084
LO	Yorkshire	Nannoceratopsis symmetrica	Bucefalo Palliani and Riding, 2003	1 in amm_b_Harpoceras serpentinum	181.17	42.056
FO	Bavaria	Nannoceratopsis triangulata	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	42.833
FO	Czestochowa	Nannoceratopsis triangulata	Poulsen, 1998	0.8 in amm_t_Procerites aurigerus	167.09	42.132
FO	Denmark synthesis	Nannoceratopsis triangulata	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	48.421
LO	Scotian Margin	Nannoceratopsis triceras	Williams et al., 1993	0.6 in stage_Callovian	163.034	30.431
FO	Scotian Margin	Nannoceratopsis triceras	Williams et al., 1993	0.85 in stage_Pliensbachian	185.505	27.69
LO	North Sea Compilation	Nannoceratopsis triceras	Copestake and Partington, 2023	1 in amm_b_Hyperlioceras discites	170.67	39.918
FO	North Sea Compilation	Nannoceratopsis triceras	Riding and Thomas, 1992	0 in amm_b_Amaltheus margaritatus	188	42.596
LO	North Sea Compilation	Nannoceratopsis triceras	Riding and Thomas, 1992	1 in amm_b_Witchellia laeviuscula	170.32	39.926
FO	Bavaria	Nannoceratopsis triceras	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	42.833
FO	Denmark synthesis	Nannoceratopsis triceras	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	48.421
FO	Dorset-Yorkshire	Nannoceratopsis triceras	Woollam and Riding, 1983	0 in amm_b_Dactylioceras tenuicostatum	184.2	40.892
LO	Dorset-Yorkshire	Nannoceratopsis triceras	Woollam and Riding, 1983	1 in amm_b_Hyperlioceras discites	170.67	38.206
FO	North Yorkshire	Nannoceratopsis triceras	Bucefalo Palliani and Riding, 2000	0 in amm_b_Dactylioceras tenuicostatum	184.2	43.267
LO	North Yorkshire	Nannoceratopsis triceras	Bucefalo Palliani and Riding, 2000	0.8 in amm_b_Dactylioceras tenuicostatum	183.368	43.368
FO	Yorkshire	Nannoceratopsis triceras	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	41.667
FO	Whitby	Nannoceratopsis triceras	vd Schootbrugge et al., 2019a	0.05 in amm_b_Dactylioceras tenuicostatum	184.148	43.439
FO	Bulgaria	Nannoceratopsis triceras	Bucefalo Palliani and Riding, 2003	0 in amm_b_Amaltheus margaritatus	188	38.247