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	Source	Calibration	Age (Ma)	Paleolatitude
FO	Arctic Basin, Arctic	Bujak et al., 2022	0 in amm_b_Pictonia baylei	154.78	73.231
LO	Arctic Basin, Arctic	Nøhr-Hansen, 2025	0.17 in stage_Albian	111.041	73.897
LO	Northeast Greenland, Greenland	Nøhr-Hansen, 2025	0.25 in stage_Albian	110.025	57.149
LO	Hold With Hope, Greenland	Nøhr-Hansen et al., 2019	0.33 in stage_Albian	109.009	57.727
LO	Paksa, Siberia	Shulgina et al., 1994	0.5 in amm_s_Unzoned	136.07	72.875