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The overlying greenish grey marls with thin limestone beds and nodular horizons assigned to the Ranberget Member (30 m, 9g of Kiær 1908) display mudflake conglomerates, desiccation cracks and ripple marks. The fauna is restricted to bryozoans and ostracodes, with significant horizons containing agnathans and eurypterids. The base of the member is defined in the E68 road section between Vik and Sundvollen at the first appearance of marls over the massive lumpy bedded limestones of the Brattstad Member. A 4 cm‑thick bentonite occurs 2 m above the base of the member (Jørgensen 1964). The upper boundary is gradational, with interbedded limestones and greenish grey shales passing up into red mudstones and sandstones of the Ringerike Group. The junction is defined arbitrarily at the overall change in colour from greenish grey to red sediments; this transition is accompanied by the disappearance of the few remaining in situ marine faunal elements.