Zhuravlev, A. Yu., and P. D. Krusse. 2012. “Treatise Online No. 55: Part E, Revised, Volume 4, Chapter 20B: Cribricyaths and Microfossils of Uncertain Affinity Resembling Cribricyaths”. Treatise Online, February. https://doi.org/10.17161/to.v0i0.4428.