NSF-supported researchers investigate a connection between the disappearance of certain plant communities and the late-Pleistocene extinction of large mammal species in North America
The book also goes into come things besides fruit, such as thorns. Hawthorn thorns are too far apart to deter deer, which just nibble around them, but a larger browser that takes in whole twigs at a time wouldn't want to mess with it. Honeylocust and holly trees have thorns at the base but not toward the top, but they go up 20 feet or so, much higher than any animal that's been here since the Pleistocene. Even pollination may be anachronistic in such plants as the pawpaw. Their known to be poorly pollinated even in the wild natural settings. Flies are the primary pollinator now but the flower isn't shaped for optimal pollination by flies, so the theory is they may have used to attract certain beetles that were numerous when there was lots of megafaunal dung around.
One thing that book doesn't get into however is the effects that the browsing of these animals themselves must have had, considering how there's a noticable difference in the ecosystems from high deer populations, it's pretty staggering what it must have been like back when all the megafauna were around.
"The Ghosts of Evolution"
I just ordered it, 4.99 used hardbound. What's your cut Paul?
I highly recommend the book "The Ghosts of Evolution" by Connie Barlow,
I'm enjoying it, thanks for the recommendation!