For those interested in the 'problem' of tail dragging in dinosaurs, the
current (June 23) issue of SCIENCE NEWS, page 397, column 1, tell us that
on a 50-acre parcel of land in St. George, Utah, owned by Sheldon Johnson,
there are "...More than 100 footprints of meat-eating theropod dinosaurs
which have been uncovered here, as well as grooves where the creatures'
tails dragged in the mud."
The fossil tracks are said to range from 5 to 18 inches in length. Note
that they were made in deep mud, and some went so deep that a hallux (digit
I) imprint is recorded. Perhaps the mud depth might have resulted in tail
drag marks where, normally, the tail might have been suspended somewhat
above the surface.