A while back, Matt speculated on the size of the allegedly giant mamenchisaurid Hudiesaurus .  At the time, all he had to go on was Glut’s (2000) reproduction of half of Dong (1997:fig. 3), and a scalebar whose length was given incorrectly.  The comments on that article gave some more measurements, but we never got around to showing you the figures of the vertebra in question, so here it is: Hudiesaurus sinojapanorum IVPP V.