The Borenshult-1 core, drilled in the vicinity of Motala, east of Lake Vättern in south centralSweden, comprises a well-dated and nearly complete succession of marine marly carbonatesdeposited relatively close to land. The 34 core samples analyzed for palynology encompass theupper part of the Darriwilian (Furudal Limestone), the entire Sandbian (Dalby Limestone, theKinnekulle K-bentonite and the lower Skagen Limestone) and the lower part of the Katian (SkagenLimestone). The age of this interval is well-constrained to the late Darriwilian (Stage slice Dw3)–early Katian (Stage slice Ka1), based on conodonts and 206Pb/238U dating of volcanic ashdeposits.