On the microfossils of Corycium enigmaticum

This paper deals with alga-like microfossils found in the about 2 000 m.y. old schist belt situated N of Tampere, SW Finland and belonging to the lower Svecofennian. The microfossils occur there in carbon-bearing phyllite and in its inclusions, carbon-bearing slate fragments and carbon sacks, which latter Sederholm regarded as remnants of primitive algae and called Corycium enigmaticum.