![]() ![]() ![]() Previous macrofossil studies indicate a shallow, distal depositional environment for the succession. As such, their occurrence is valuable to our understanding of high latitude climate change and floral turnover over this poorly defined boundary. Consequently, these strata form one of the most comprehensive archives of Arctic biostratigraphy of the Jurassic-Cretaceous boundary interval. The Rollrock Section on northern Ellesmere Island (Arctic Canada) exposes a continuous succession of Upper Jurassic to Lower Cretaceous strata, of which 537 m were logged and sampled at 1.5 m intervals for palynological analysis.
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