Knight's
original painting
Both
Dinosaurs were re-worked slightly. The Triceratops' frill spikes were
rounded
over and its mouth, which was way too wide was shortened.
The
Tyrannosaurus was re-worked even more. The head was tilted up slightly
and the snout,
which
was shaped like an old shoe, was made narrower and re-sculpted with epoxy
putty.
The
skin was originally wrinkled like an elephant's, similar to the Triceratops.
The wrinkles
were
all filled in and smoothed out with putty. The skin was then re-textured
with primer to
more
closely resemble the beast in the painting.
The History of Space Exploration
Figures: People, Creatures and Dinosaurs