1. Stensiö, E., The Cephalaspids of Great Britain, London: British Museum (Natural History), 1932.
2. Denison, R.H., Fieldiana Geol., 1951, vol. 11, pp. 197–218.
3. Gross, W., Acta Zool., 1961, vol. 42, pp. 73–150.
4. Afanassieva, O.B., Tsefalaspidy Sovetskogo Soyuza (Agnatha) (The Cephalaspids of the Soviet Union (Agnatha)), Tr. Paleontol. Inst. AN SSSR, vol. 248, Moscow: Nauka, 1991.
5. Afanassieva, O.B. and Karatajute-Talimaa, V.N., Paleontol. Zh., 2013, no. 5, pp. 53–61.