FIGURE 17 in A phylogeny of Plesiosauria (Sauropterygia) and its bearing on the systematic status of Leptocleidus Andrews, 1922

FIGURE 17. Results of analyses testing the influence of quantitative characters on the data set (matrix size = 31 OTUs; the OTU Callawayasaurus colombiensis represents the composite scoring). (A) Strict consensus of 20 most parsimonious trees (tree length = 540; CI = 0.550; RI = 0.577; RC = 0.317) for which all quantitative characters (1–4, 79, 85, 94, 95, 99, 130–132, 147, and 149) have been excluded from the data set (138 characters total). (B) Strict consensus of 32 most parsimonious trees (tree length = 746; CI = 0.594; RI = 0.542; RC = 0.322) of an analysis for which Thiele's (1993) gap­weighting approach for quantitative characters is not implemented (all quantitative and qualitative characters have a weight = 1 and are unordered; 152 characters total).