Farlow: Something that MAY/may NOT be related to this, but I mention in case
it might be, is that many--but by no means all--sauropod trackways have
forefoot (manus) prints of the left and right sides of the trackway whose
centers are routinely placed farther away from the trackway midline than are
the centers of hindfoot (pes) tracks. There is more than one possible
explanation for this, but one might be that the forelimbs of these animals were
more flexed at the elbow than in sauropods with different trackway patterns.