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n.1.(Paleon.) A genus of fossil trees of the Devonian and Carboniferous ages, having the exterior marked with scars, mostly in quincunx order, produced by the separation of the leafstalks.
References in periodicals archive ?
Only a knowledge of the geological past makes sense of why we have found marine fossils in the district, the shark-like fish that was found at Brockholes, the three-metre remnant of the giant clubmoss lepidodendron (which grew up to 30m high) at Appleton Quarry, Shepley.