A rich ichnofossil assemblage from the Frasnian (Upper Devonian) deposits at Amdoma Hill, Russia (Onega Lake, Russia)

by Ivanov, Alexander, Meškis, Sandijs, Mikuláš, Radek, Zupinš, Ivars
Source: 1. Fossils-Darwin-Evolution 1. Banská Bystrica : Prírodovedecká fakulta Univerzity Mateja Bela, 2009 1. 9788080838072 1. S. 22-23