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	Williams et al., 2025	0.25 in stage_Valanginian	136.425	70.282
FO	Moray Firth, Scotland	Duxbury, 2018	0.4 in amm_b_Polyptychites	136.252	44.43
FO	Vocontian Basin, France	Duxbury, 2024	0.8 in amm_t_Thurmanniceras pertransiens	136.894	30.076
LO	Vocontian Basin, France	Duxbury, 2024	0.6 in amm_t_Saynoceras verrucosum	134.89	29.977
LO	Speeton, UK	Duxbury, 2023	0.5 in amm_b_Endemoceras amblygonium	132.43	40.787