Thin lustrous black pottery was made by Neolithic cultures of the Dawenko and Longshan phases in the area of present day Shandong province in northeastern China. A line drawing of a bowl of the same shape is illustrated in an article on Neolithic pottery found in Shandong province and classifies this shape as early Dawenkou, see Wenwu, 1982, no. 10, p. 47. A nearly identical bowl is in the Metropolitan Museum of Art and was first published by Clarence F. Shangraw, and included in the exhibition Origins of Chinese Ceramics, China House Gallery, 1979, Catalogue no. 8. Compare a bowl of the same size and type, but with a more compressed lower body and high perpendicular neck in the collection of the Museum of Far Eastern Antiquities, Stockholm, illustrated by William Willets, Foundations of Chinese Art, London 1965, col. pl. 4. Other related black pottery bowls with slightly rounded bottoms are illustrated by J.G. Andersson, Prehistory of the Chinese, B.M.F.E.A. 15, 1943, pl. 28-3, pl. 30-3