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Grasses, as we know them, *did not* arise in the Cretaceous.
"Although clear evidence for the development of grasslands does not appear
prior to the mid-late Miocene, modern tribes of grasses are known from
megafossils from the late Paleocene-early Eocene (Crepet and Feldman 1988)"
Behrensmeyer et al, 1992, p. 427 University of Chicago Press.
Pteridophytes and some herbaceous angiosperms dominated ground cover during
the Late Cretaceous.
At 11:52 PM 6/29/97 -0500, you wrote:
>It's my understanding that the Cret. saw the first spreading of
>grasses.If so what does the paleobotanical evidence show as the earliest
>areas to see the emergence of grasses and when did they become the
>prominent ground cover?---Thanks, Sean