Vorlage:Obruchev, 1943c
Aus WORLDFISH WIKI
- Obruchev, D.V. 1943. Psammosteidae devona SSSR i Spitsbergena i evolyutsiya Agnatha [Psammosteidae from the Devonian of USSR and Spitsbergen and evolution of Agnatha]. Biological Department of the Academy of Sciences of USSR. Moskow.