Frey, L., Coates, M., Ginter, M., Hairapetian, V., Rücklin, M., Jerjen, I., & Klug, C. (2019). The early elasmobranch Phoebodus: Phylogenetic relationships, ecomorphology and a new time-scale for shark evolution. Proc Biol Sci.

Frey, Linda, Michael Coates, Michał Ginter, Vachik Hairapetian, Martin Rücklin, Iwan Jerjen, and Christian Klug. "The Early Elasmobranch Phoebodus: Phylogenetic Relationships, Ecomorphology and a New Time-scale for Shark Evolution." Proc Biol Sci 2019.

Frey, Linda, et al. "The Early Elasmobranch Phoebodus: Phylogenetic Relationships, Ecomorphology and a New Time-scale for Shark Evolution." Proc Biol Sci 2019.