When established, three fossil-species were included in synonymy: Pecopteris planitzensis Gutbier in Geinitz & Gutbier, Versteiner. Zechsteingeb. Rothlieg. Sachs. 2: 17. 9 Oct 1849, & Pecopteris fruticosa Gutbier in Geinitz & Gutbier, Versteiner. Zechsteingeb. Rothlieg. Sachs. 2: 16. 9 Oct 1849, & Neuropteris pinnatifida Gutbier, Abdr. Verst. Schwarzkohlengeb. ed. 1835, 1: 61. Jun 1836.