Table 4.2.  Mean measurements on complete bifacial lithic artifacts.
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         Type                   N        L        W       T      Wt
                                       (mm)     (mm)    (mm)    (gm)
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Hamilton Incurvate              4      25.45    15.85    3.5     0.82
                         s.d.            -        -       -       -

Dallas Excurvate Triangular     1      32.3     11.2     3.6     1.4
                         s.d.            -        -       -       -

Projectile point preform        8      41.56    22.70    8.54    7.90
                         s.d.           6.25     2.61    1.80    2.36

Blade                          15      24.57    10.54    3.39    0.95
                         s.d.           5.99     2.27    1.30    0.73

Biface                          5      44.24    30.74   11.72   17.18
                         s.d.          13.18     7.20    1.68   11.35

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L := length  W := width  T := maximum thickness   Wt := weight   
s.d. := standard deviation