FIGURE 6. Phylogenetic relationships of Brachiosaurus and
Giraffatitan, produced using PAUP* 4.0b10 on the matrix of Harris
(2006) modified by splitting the composite "Brachiosaurus" OTU
into two separate OTUs for the two species, having 31 taxa and 331
characters. Strict consensus of 72 most parsimonious trees (length =
791; CI = 0.5196; RI = 0.6846, RC = 0.3557). Three clades forming a
node-stem triplet are highlighted: the node-based Titanosauriformes,
and the branch-based sister clades Brachiosauridae and Somphospondyli.