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.

No stratigraphic data available. If you know publications where stratigraphic ranges of this species or genus are calibrated, report this by using the feedback button below.

Plots are based on the following information

FO/LO	Location	Taxon	Source	Calibration	Age (Ma)	Paleolatitude
FO	Assam	Fromea acambra	Sah et al., 1970	0 in stage_Cenomanian	100.5	-43.564
LO	Assam	Fromea acambra	Sah et al., 1970	1 in stage_Maastrichtian	66.04	-21.446
LO	North Sea Compilation	Fromea amphora	Costa and Davey, 1992	1 in amm_b_Neocardioceras juddii	93.9	45.591
LO	Stevns Klint	Fromea amphora	Surlyk et al., 2013	1 in nan_u_UC20b	67.818	45.696
FO	Stevns Klint	Fromea amphora	Surlyk et al., 2013	1 in nan_u_UC20b	67.818	45.696
LO	DSDP 400A	Fromea amphora	Davey, 1979b	0.67 in nan_u_BC22	113.64	38.919
FO	DSDP 400A	Fromea amphora	Davey, 1979b	0.9 in nan_u_BC21	115.011	38.554
FO	Omsk No. 8	Fromea amphora	Lebedeva et al., 2013	0.15 in mag_C33r	83.088	52.284
LO	Omsk No. 8	Fromea amphora	Lebedeva et al., 2013	0.5 in nan_n_CC25a	69.661	51.487
LO	Pueblo	Fromea amphora	Dodsworth, 2000	0.4 in amm_b_Mammites nodosoides	93.17	45.695
FO	ODP 765	Fromea amphora	Helby and McMinn, 1992	1 in mag_M1n	121.4	-49.352
LO	DSDP 361	Fromea amphora	Davey, 1978	0.9 in nan_c_NC6b	119.512	-42.573
FO	DSDP 361	Fromea amphora	Davey, 1978	0.4 in nan_c_NC6b	120.068	-42.557
FO	Haldager 1	Fromea amphora	Davey, 1982	1 in amm_b_Surites icenii	138.25	43.829
FO	Cape Nares	Fromea amphora	Williams et al., 2025	0.67 in stage_Turonian	90.878	79.822
LO	Cape Nares	Fromea amphora	Williams et al., 2025	0.5 in stage_Maastrichtian	69.105	77.576
FO	Siberia	Fromea apertulata	Fedorova, 1989	0 in stage_Santonian	85.7	43.606
LO	Siberia	Fromea apertulata	Fedorova, 1989	1 in stage_Campanian	72.17	42.771
LO	Stevns Klint	Fromea apiculata	Surlyk et al., 2013	0 in nan_u_UC20d	67.279	45.646
FO	Stevns Klint	Fromea apiculata	Surlyk et al., 2013	1 in nan_u_UC16a	79.13	46.738
FO	Australia synthesis	Fromea capnosa	Stover and Helby, 1987a	0.25 in stage_Callovian	164.35	-39.184
LO	Australia synthesis	Fromea capnosa	Stover and Helby, 1987a	0.75 in stage_Callovian	162.47	-39.798
FO	Tarim Basin	Fromea chinensis	He Chengquan, 1991	0 in stage_Lutetian	48.07	38.365
LO	Tarim Basin	Fromea chinensis	He Chengquan, 1991	1 in stage_Bartonian	37.71	38.294
LO	ODP 748	Fromea chytra	Mao Shaozhi and Mohr, 1992	0.1 in nan_n_CC24	72.037	-60.662
FO	ODP 748	Fromea chytra	Mohr and Mao Shaozhi, 1997	0 in stage_Campanian	83.65	-60.249
LO	Stevns Klint	Fromea chytra	Surlyk et al., 2013	0.5 in nan_u_UC20d	66.66	45.589
LO	Australia synthesis	Fromea chytra	Helby et al., 1987	0.05 in stage_Danian	65.821	-47.766
FO	Australia synthesis	Fromea chytra	Helby et al., 1987	0.1 in stage_Santonian	85.495	-50.952
FO	Omsk No. 8	Fromea chytra	Lebedeva et al., 2013	1 in mag_C34n	83.65	52.28
LO	Rif	Fromea chytra	Slimani et al., 2016	0.85 in stage_Campanian	73.892	24.2
FO	Rif	Fromea chytra	Slimani et al., 2016	0.75 in stage_Campanian	75.04	24.279
FO	MacKenzie	Fromea complicata	Brideaux, 1977	0 in stage_Aptian	121.4	77.822
LO	MacKenzie	Fromea complicata	Brideaux, 1977	1 in stage_Albian	100.5	80.187
LO	Speeton	Fromea complicata	Duxbury, 2023	0.2 in amm_b_Simbirskites variabilis	127.116	41.761
FO	Speeton	Fromea complicata	Duxbury, 2023	0.5 in amm_b_Craspedodiscus gottschei	128.405	41.41
FO	Russia synthesis	Fromea cooksoniae	Fedorova-Shakhmundes, 1980	0 in stage_Aptian	121.4	41.612
LO	Russia synthesis	Fromea cooksoniae	Fedorova-Shakhmundes, 1980	0.5 in stage_Aptian	117.3	42.648
FO	Gippsland	Fromea corrugata	Marshall, 1989	0 in stage_Turonian	93.9	-69.121
LO	Gippsland	Fromea corrugata	Marshall, 1989	1 in stage_Coniacian	85.7	-64.275
FO	Siberia	Fromea crassisoma	Zatonskaya, 1975	0 in stage_Oxfordian	161.53	49.296
LO	Siberia	Fromea crassisoma	Zatonskaya, 1975	1 in stage_Tithonian	143.1	41.485
FO	Siberia	Fromea cryptofoveolata	Fedorova, 1989	0 in stage_Tithonian	149.24	43.164
LO	Siberia	Fromea cryptofoveolata	Fedorova, 1989	1 in stage_Tithonian	143.1	41.485
LO	Australia synthesis	Fromea cylindrica	Helby et al., 1987	1 in stage_Berriasian	137.7	-52.599
FO	Australia synthesis	Fromea cylindrica	Helby et al., 1987	0 in stage_Tithonian	149.24	-46.56
LO	Salzburg	Fromea cylindrica	Boorova et al., 1999	0.4 in stage_Valanginian	135.66	28.654
FO	Salzburg	Fromea cylindrica	Boorova et al., 1999	0.25 in stage_Valanginian	136.425	28.767
FO	Siberia	Fromea endogranulata	Fedorova, 1989	0 in stage_Berriasian	143.1	41.485
LO	Siberia	Fromea endogranulata	Fedorova, 1989	1 in stage_Berriasian	137.7	40.008
FO	MacKenzie	Fromea expolita	Brideaux, 1977	0 in stage_Barremian	126.5	77.194
LO	MacKenzie	Fromea expolita	Brideaux, 1977	1 in stage_Barremian	121.4	77.822
FO	Australia synthesis	Fromea fragilis	Cookson and Eisenack, 1962b	0 in stage_Aptian	121.4	-53.796
LO	Australia synthesis	Fromea fragilis	Cookson and Eisenack, 1962b	1 in stage_Cenomanian	93.9	-55.275
FO	Cape Nares	Fromea fragilis	Williams et al., 2025	0.5 in stage_Turonian	91.645	80.168
LO	Cape Nares	Fromea fragilis	Williams et al., 2025	0.5 in stage_Maastrichtian	69.105	77.576
FO	Alberta	Fromea glabella	Singh, 1971	0.5 in stage_Albian	106.85	63.658
LO	Alberta	Fromea glabella	Singh, 1971	1 in stage_Albian	100.5	64.185
FO	Alaska	Fromea gordonwoodii	Ravn, 2017	0 in stage_Toarcian	184.2	59.155
LO	Alaska	Fromea gordonwoodii	Ravn, 2017	1 in stage_Toarcian	174.7	63.247
FO	MacKenzie	Fromea grandis	Jansonius, 1989	0 in stage_Valanginian	137.7	76.982
LO	MacKenzie	Fromea grandis	Jansonius, 1989	1 in stage_Valanginian	132.6	77.152
FO	Senegal	Fromea granulata	Lentin and Williams, 1977b	0 in stage_Albian	113.2	16.011
LO	Senegal	Fromea granulata	Lentin and Williams, 1977b	1 in stage_Aptian	113.2	16.011
LO	Stevns Klint	Fromea laevigata	Surlyk et al., 2013	0.25 in nan_u_UC20d	66.969	45.618
FO	Stevns Klint	Fromea laevigata	Surlyk et al., 2013	1 in nan_u_UC16a	79.13	46.738
LO	Viborg_1	Fromea laevigata	Heilmann-Clausen, 1985	1 in nan_n_NP8	57.223	47.055
FO	Omsk No. 8	Fromea laevigata	Lebedeva et al., 2013	1 in mag_C34n	83.65	52.28
LO	Omsk No. 8	Fromea laevigata	Lebedeva et al., 2013	0.5 in nan_n_CC25a	69.661	51.487
FO	Siberia	Fromea latisecta	Fedorova, 1989	0 in stage_Tithonian	149.24	43.164
LO	Siberia	Fromea latisecta	Fedorova, 1989	1 in stage_Tithonian	143.1	41.485
FO	Siberia	Fromea macroplicata	Zatonskaya, 1975	0 in stage_Oxfordian	161.53	49.296
LO	Siberia	Fromea macroplicata	Zatonskaya, 1975	1 in stage_Tithonian	143.1	41.485
FO	Australia synthesis	Fromea madurensis	Cookson and Eisenack, 1982	0 in stage_Turonian	93.9	-55.275
LO	Australia synthesis	Fromea madurensis	Cookson and Eisenack, 1982	1 in stage_Maastrichtian	66.04	-47.786
LO	ODP 765	Fromea monilifera	Helby and McMinn, 1992	1 in mag_M1n	121.4	-49.352
FO	ODP 765	Fromea monilifera	Helby and McMinn, 1992	0.75 in mag_M1n	121.996	-49.458
LO	Labrador Sea	Fromea nicosia	Nøhr-Hansen, 2025	0.26 in stage_Campanian	80.665	54.535
FO	MacKenzie	Fromea nicosia	Jansonius, 1989	0 in stage_Coniacian	89.39	78.552
LO	MacKenzie	Fromea nicosia	Jansonius, 1989	1 in stage_Danian	61.66	77.528
FO	Alaska	Fromea nohrhansenii	Ravn, 2017	0 in stage_Barremian	126.5	82.395
LO	Alaska	Fromea nohrhansenii	Ravn, 2017	1 in stage_Albian	100.5	83.725
FO	Kachchh	Fromea pachyderma	Kar, 1979	0 in stage_Rupelian	33.9	9.69
LO	Kachchh	Fromea pachyderma	Kar, 1979	1 in stage_Chattian	23.04	13.593
FO	Siberia	Fromea paksensis	Fedorova, 1989	0 in stage_Valanginian	137.7	40.008
LO	Siberia	Fromea paksensis	Fedorova, 1989	0.5 in stage_Valanginian	135.15	39.311
FO	Alberta	Fromea plicata	Dolby, 2019	0 in stage_Aptian	121.4	62.112
LO	Alberta	Fromea plicata	Dolby, 2019	0.5 in stage_Albian	106.85	63.658
FO	Alaska	Fromea polaris	Ravn, 2017	0 in stage_Hauterivian	132.6	82.088
LO	Alaska	Fromea polaris	Ravn, 2017	1 in stage_Hauterivian	126.5	82.395
FO	Scotian Margin	Fromea quadrangularis	Fensome et al., 2016b	0 in stage_Campanian	83.65	38.835
LO	Scotian Margin	Fromea quadrangularis	Fensome et al., 2016b	0.5 in stage_Campanian	77.91	38.329
LO	Labrador Sea	Fromea quadrangularis	Nøhr-Hansen, 2025	0.24 in stage_Campanian	80.895	54.558
FO	Central Danish Trough	Fromea quadrugata	Heilmann-Clausen, 1987	0.8 in amm_b_Paracrioceras denckmanni	122.568	44.748
LO	Central Danish Trough	Fromea quadrugata	Heilmann-Clausen, 1987	1 in amm_b_Parancyloceras bidentatum / Parancyloceras scalare	121.15	45.144
LO	Silesian Basin	Fromea quadrugata	Skupien and Vašíček, 2002	1 in amm_t_Leymeriella germanica	111.27	38.763
FO	Silesian Basin	Fromea quadrugata	Skupien and Vašíček, 2002	0 in amm_t_Nicklesia pulchella	125.28	35.485
FO	Alaska	Fromea quasitabulata	Ravn, 2017	0 in stage_Oxfordian	161.53	70.179
LO	Alaska	Fromea quasitabulata	Ravn, 2017	1 in stage_Oxfordian	154.78	73.704
FO	Siberia	Fromea rugosa	Zatonskaya, 1975	0 in stage_Oxfordian	161.53	49.296
LO	Siberia	Fromea rugosa	Zatonskaya, 1975	1 in stage_Tithonian	143.1	41.485
FO	MacKenzie	Fromea senilis	McIntyre and Brideaux, 1980	0 in stage_Aalenian	174.7	59.255
LO	MacKenzie	Fromea senilis	McIntyre and Brideaux, 1980	1 in stage_Aalenian	170.9	61.089
FO	Jutland	Fromea staveia	Elsik, 1977	0 in stage_Priabonian	37.71	49.176
LO	Jutland	Fromea staveia	Elsik, 1977	1 in stage_Priabonian	33.9	49.25
FO	Haldager 1	Fromea thomsenii	Poulsen, 1996	0 in stage_Tithonian	149.24	44.103
LO	Haldager 1	Fromea thomsenii	Poulsen, 1996	1 in stage_Tithonian	143.1	43.95
FO	Czestochowa	Fromea tornatilis	Poulsen, 1998	0.75 in amm_t_Parkinsonia parkinsoni	168.308	42.29
LO	Czestochowa	Fromea tornatilis	Poulsen, 1998	1 in amm_t_Zigzagiceras zigzag	167.57	42.195
FO	Isle of Skye	Fromea tornatilis	Riding and Thomas, 1997	0 in amm_b_Perisphinctes pumilus	158.35	43.868
LO	Isle of Skye	Fromea tornatilis	Riding and Thomas, 1997	0.6 in amm_b_Perisphinctes pumilus	158.116	43.894
FO	Calvados	Fromea tornatilis	Feist-Burkhardt and Monteil, 1997	0 in amm_b_Zigzagiceras zigzag	168.17	35.991
LO	North Sea Coast	Fromea tornatilis	Riley and Fenton, 1982	1 in amm_b_Cardioceras cordatum	159.1	36.746
LO	Milne Land	Fromea tornatilis	Smelror, 1988a	0.5 in amm_b_Peltoceras athleta	162.68	50.737
FO	Milne Land	Fromea tornatilis	Smelror, 1988a	0.75 in amm_b_Sigaloceras calloviense	163.57	50.665
LO	Kong Karls Land	Fromea tornatilis	Smelror, 1988b	0.25 between 0 amm_b_Quenstedtoceras lamberti 1 amm_b_Quenstedtoceras mariae	161.752	66.998
FO	Kong Karls Land	Fromea tornatilis	Smelror, 1988b	0.1 between 0 amm_b_Macrocephalites herveyi 1 amm_b_Peltoceras athleta	165.006	66.615
FO	Hausen	Fromea tornatilis	Feist-Burkhardt, 1990	0.9 in amm_b_Graphoceras concavum	170.96	37.93
LO	Hausen	Fromea tornatilis	Feist-Burkhardt, 1990	0.5 in amm_b_Witchellia laeviuscula	170.495	37.902
FO	Siberia	Fromea torosa	Zatonskaya, 1975	0 in stage_Oxfordian	161.53	49.296
LO	Siberia	Fromea torosa	Zatonskaya, 1975	1 in stage_Berriasian	137.7	40.008
FO	MacKenzie	Fromea triquetra	Brideaux, 1977	0 in stage_Barremian	126.5	77.194
LO	MacKenzie	Fromea triquetra	Brideaux, 1977	1 in stage_Barremian	121.4	77.822
FO	Gippsland	Fromea tubiformis	Marshall, 1989	0 in stage_Turonian	93.9	-69.121
LO	Gippsland	Fromea tubiformis	Marshall, 1989	1 in stage_Coniacian	85.7	-64.275
FO	Gippsland	Fromea unciformis	Marshall, 1989	0 in stage_Turonian	93.9	-69.121
LO	Gippsland	Fromea unciformis	Marshall, 1989	1 in stage_Coniacian	85.7	-64.275
FO	Dongpu	Fromea warlinghamensis	Gitmez and Sarjeant, 1972	0 in stage_Kimmeridgian	154.78	14.138
LO	Dongpu	Fromea warlinghamensis	Gitmez and Sarjeant, 1972	1 in stage_Kimmeridgian	149.24	12.889
FO	Alaska	Fromea xantha	Ravn, 2017	0 in stage_Barremian	126.5	82.395
LO	Alaska	Fromea xantha	Ravn, 2017	1 in stage_Barremian	121.4	82.884
FO	Dongpu	Fromea zhongyuanensis	He Chengquan et al., 1989	0 in stage_Ypresian	56	30.254
LO	Dongpu	Fromea zhongyuanensis	He Chengquan et al., 1989	1 in stage_Priabonian	33.9	27.993