Permian wood from the Yaguari Formation of Uruguay

Four gymnosperm wood taxa from the Upper Permian Yaguari Formation from sev eral localities between Meio and Frayle Muerto, Department of Cerro Large, Uruguay, are described. References to Ararrcauiaxylon and Baieroxylon are b ased on typical characters of their secondary wood. Barakaroxylon, a widely distributed genus in Gondwana and a new species Bageopitys herbstii, are d escribed and illustrated based on rather complete specimens. All these Pale ozoic woods are common in different parts of Gondwana, viz., Brazil, Urugua y, South Africa, India and Australia.