1984Ptilodictya irregularis sp. nov. — Spjeldnaes, pp. 30, fig. 4:2, text fig. 6 J,M
Selection of related publications
Spjeldnaes, N. 1984.
Upper Ordovician Bryozoans from Ojl Myr, Gotland, Sweden.Bulletin of the Geological Institutions of the University of Uppsala10,
1-66.