Hettangian
Official stratigraphy: Jurassic / Lower Jurassic / Hettangian
Related names
Asterocarpus heterophyllus Sternb. ex Göpp. 1836
Umkomasia franconica M.Kirchn. et A.Müll. 1992
Pteruchus septentrionalis M.Kirchn. et A.Müll. 1992
Official stratigraphy: Jurassic / Lower Jurassic / Hettangian
Asterocarpus heterophyllus Sternb. ex Göpp. 1836
Umkomasia franconica M.Kirchn. et A.Müll. 1992
Pteruchus septentrionalis M.Kirchn. et A.Müll. 1992