Phialopteris heterophylla (Sternberg ex Göppert, 1836) comb. nov., a rare schizaeaceous fern from the Early Jurassic of Bavaria Johanna H. A. Van Konijnenburg-van Cittert , Christian Pott , Evelyn Kustatscher , Stefan Schmeisser , Günter Dütsch , Johan van der Burgh 2018 | volume 74 | issue 1-2 | pages 55–64 PDF
