Abstract

During spillway construction at the Brush Creek reservoir near Butlerville, Jennings County, Indiana, Yarmouth interglacial floodplain deposits were exposed in a buried valley. Fragments of wood from the forest bed were first identified as spruce, but careful examination revealed several unusual anatomical features not found in living North American conifers. The wood specimens show resemblance to both Larix and Picea, but because other features favor Larix more closely, the name Larix(?) pleistocenicum Beals, n. sp., is proposed for this Pleistocene coniferous wood. Few published descriptions of Pleistocene wood are available. Proper preparation and examination of wood specimens is suggested to determine if woody material is of value as a means of correlation of Pleistocene glacial and interglacial deposits.

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