Sawin, R. S.; West, R. R. Paleoecology of the Permian (Wolfcampian) Phylloid Alga Calcipatera from an In Situ Occurrence in Kansas, U.S.A. CRES 2005, No. 251, 1-14. https://doi.org/10.17161/cres.v0i251.11835.