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Phil
Brunette described:
"...There are some very well preserved tracks and it appears to have been a site
that the dino's visited often since there are multiple layers of impressions
suggesting yearly visits.... or migrations perhaps?"
It
might be interesting to do a study to try and determine whether the several
substrate levels where the dinosaurs walked have even the slightest of color
difference -- as contrasts with layers in between -- that might suggest the
specific time of year in which the deduced migrations might have occurred.
For example, in some palro-environments it it has been speculated that
layers laid down in winter tend to be somewhat darker, perhaps due to deposition
of vegetable matter now visible as a carbon residue.
Did
anyone notice color differences where the track-bearing substrates are visible
in cross-section? If so, did the tracks tend to predominate in darker
or lighter layers?
Phil further
commented:
"Of the
100s of footprints ranging...from several inches to about 18 inches... there
were only two spots which might be tail drag. They appear on one trackway
cluster (many foot imprints of multiple animals) and within approx 8 feet of
each other. Maybe one animal with a broken tail or injured
leg?"
Phil
(or others who have been there), did you notice whether the possible tail drag
marks occur along the approximately central line of a trackway? If so, the
tail drag explanation becomes a lot more convincing, regardless of whether it
was due to injury, sinking into mud, or whatever. If not, then all bets
are off.
Ray
Stanford
"You know my method.
It is founded upon the observance of trifles." -- Sherlock Holmes, The Boscombe
Valley Mystery
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