![]() Spirillina concavoconvexa Galloway and Ryniker, 1930 type specimen holotype Carboniferous American South | ||||
![]() Spirillina eichbergensis (Kuebler and Zwingli, 1870) identified by scientist Jurassic East European Platform | ||||
![]() Spirillina polygyrata Bartenstein and Brand, 1937 identified by scientist Jurassic off Biscaya and Iberia | ![]() Spirillina polygyrata Bartenstein and Brand, 1937 identified by scientist Jurassic off Biscaya and Iberia | |||