Time-marking stones. See Monuments.

Time periods—

full-figure glyphs, [67]-[68], [188]-[191]

plate showing, [188]

head-variant glyphs, [67]-[74]

plates showing, [167], [170], [176], [178], [179], [180]

length, [62]

normal glyphs, [67]-[74]

plate showing, [157]

omission of, [128]