Vendian Lower Cambrian acritarch biostratigraphy of the central Caledonian fold belt in Scandinavia and the palaeogeography of the Iapetus-Tornquist seaway

Abstract

Microfossils are reported from Vendian (?)-Lower cambrian successions in the central and southern Caledonides in Sweden (Laisvall and Vassbo). The Heliosphaeridium dissimilare - Skiagia ciliosa (age-equivalent to the Holmia kjerulfi Assemblage Zone) and A