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fleshy lips and cheeks?
in Kemps 'Mammal-like Reptiles and the Origin of Mammals' (1982,Academic
Press page 248), he concludes that cynodonts probably had muscular lips
(maybe even cheeks?) because "the bone surface of the premaxilla,maxilla
and dentary adjacent to the teeth is perfectly smooth and the minute
foramina are sparse" and that a creature with a dentary "finely sculptured
with minute foramina often associated with tiny grooves" which is typical
of modern reptiles,had the shin lining the mouth tightly applied to the
bone surface .
my question is; could these features be used in seeing whether ornithopods
and other dinosaurs had cheeks?