The W1b site was discovered only a few
minutes after the W1a site on a rainy day in 1998. The W1b site is at a
stratigraphically higher level than the W1a site, but only by a couple of
metres. There are distinct ankylosaur trackways above a large hole in the
footwall that was caused by blasting when the W1 Pit was being actively mined.
The most obvious trackway is above and to the left of the hole and the
trackway proceeds from lower right to upper left. There is a second trackway
above and to the right of the hole and it is parallel to the first trackway
and is proceeding in the same direction.
The ankyosaur trackways at the
W1b site with Sean Miller (University of Alberta) providing scale.
(Click on the left trackway
for a closeup)