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Stratigraphy
Type
Depth (m)
Reference
Remarks
From
To
Kallavere Formation
holostratotype
Männil, Ralf & Rõõmusoks, 1984Ülgase cliff
Maardu Member
neostratotype
Heinsalu, H. et al., 1987
Ülgase Formation
holostratotype
Öpik, 1928c
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