Glyph O15 it changed   --  Schele, 1988 (Distance Number Introductory Glyph)   --  Robertson, 1985

Photo: Mark Van Stone   zoom Drawing: Merle Greene Robertson

Robert Wald (1999) reads the Distance Number Introductory Glyph as 'u-tz'ak-ah / utz'akah. See tz'ak note.