Agnatha

Tesseraspididae Berg, 1955

Selection of related publications
Novitskaya L. I. 2004. Subclass Heterostraci. Fossil vertebrates of Russia and adjacent countries. Agnathans and early fisches. The reference book for palaeontologists and geologists, pp. 69-207.
Karatajūtė-Talimaa, V. N. 1983. Early Devonian heterostracans of Severnaya Zemlya and their importance for correlations. Problemy sovremennoj paleoichtiologii, pp. 22-28.