Frýda, Jiří, Robert B. Blodgett, Alfred C. Lenz, and Barbora Frýdová. 2011. “Jardamarekia enigma, a New Early Devonian Tryblidioidean from Royal Creek Area (Yukon Territory, Canada), and Paleobiogeography of the Early Devonian of Northwestern Canada”. Zootaxa 2905 (1). Auckland, New Zealand:57–62. https://doi.org/10.11646/zootaxa.2905.1.4.