THIS EXPERTLY FLAKED SPECIMEN, IN CONTRAST TO THE FOUR PRECEDING, MAY HAVE BEEN TOO LIGHT TO SERVE AS A CHOPPER. OBLONG IN SHAPE. EVIDENTLY A LARGE FRAGMENT OF A PLANO-CONVEX TOOL. MAY BE BETTER ...

OBLONG IN SHAPE. RHOMBOIDAL IN CROSS SECTION. ONE FACE IS VIRTUALLY FLAT, THE OTHER IS INCURVATE WITH A STEEP OBLIQUE WORKING EDGE. AT LEAST TWO, AND PERHAPS FOUR SIDES SHOW USE (FIG. 10A) NMNH - ...