Abstract
SummaryTwo deposits from the Tees basin are investigated for their stratigraphical and pollen‐analytical content. A series of marls and lake muds from Romaldkirk includes material from zones I‐VIc of the Post‐glacial sequence and contained Bos bones. The deposit at Burtree Lane was revealed temporarily during motorway construction and covers zones IV‐VI. Its chief feature of interest is the thick layers of bryophyte peat which constitute the organic material, especially Paludella squarrosa which occurs in profusion. Other mosses include Acrocladium giganteum, A. cuspidatum, Camptothecium nitens, and the first British Post‐glacial record of Helodium blandowii. The possible developmental history of the deposits is discussed in the light of contemporary floating mat vegetation around some Polish lakes.
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