Derryvree’s Fossil Clubmoss
Archived: 4 October 2026
Abstract
At the modernly labelled date 30,287 BCE, Ireland’s past is reconstructed from environmental evidence, not historical records. Derryvree, County Fermanagh, preserves freshwater sediments between glacial tills, dating broadly across the period and indicating a locally ice-free tundra wetland with grasses, sedges, mosses, bogbean, dwarf willow, mountain avens and clubmoss. Conditions were severely cold, treeless and periglacial, within a changing regional mosaic of ice, open ground and meltwater before the ice sheet’s later maximum. Southern cave faunas demonstrate diverse Ice-Age mammals. No securely dated human occupation exists in Ireland, though a marked reindeer bone suggests a possible early, brief human visit.