FIGURE 2.

Sacra of <i>Brachiosaurus altithorax</i> and <i>Brachiosaurus
brancai</i>, equally
scaled. <b>A</b>, <b>B</b>, <i>B</i>. <i>altithorax</i> holotype FMNH
P 25107; <b>C</b>, <i>B</i>. <i>brancai</i> referred specimen HMN Aa; <b>D</b>, juvenile
<i>B</i>. <i>brancai</i> referred specimen HMN T. <b>A</b>, <b>C</b>, right lateral;
<b>B</b>, <b>D</b>, ventral. <b>A</b>, <b>B</b> modified from Riggs
(1904:pl. LXXIII); <b>C</b>, <b>D</b> modified from Janensch (1950a:
figs. 74 and 76). Scale bar equals 50 cm.