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Andreev, Plamen, Michael I. Coates, Valentina Karatajūtė-Talimaa, Richard M. Shelton, Paul R. Cooper, Nian-Zhong Wang, ja Ivan J. Sansom. "The Systematics of the Mongolepidida (Chondrichthyes) and the Ordovician Origins of the Clade." PeerJ 2016.

Andreev, Plamen, et al. "The Systematics of the Mongolepidida (Chondrichthyes) and the Ordovician Origins of the Clade." PeerJ 2016.