Grass appeared 35 million years ago? At the same time as the first primates? And flowers 120 million years ago? After dinosaurs appeared (220 million years ago)? My mind is blown. What did landscapes look like?
It is difficult to imagine this world with all its land surfaces lifeless; yet for more than a half of its history Life played out its drama under water, and the continents were practically barren. They were stark and bare, starker and barer than the utmost desert of today. Over the bare cliffs and desolate plains the sole breath of movement came from the wind and rain. A certain margin there may have been of faintly vitalized soil. From comparatively early times, a few simple algae may have trailed their filaments over the seashore or the moist borders of rock pools, or a few bacteria invaded the crumbling earth surface...
The face of the land was like nothing we know today. There could have been no real soil, for soil is largely a product of plant action. There was no carpet of plants and felt-work of roots to hold water like a sponge, preventing rapid run-off, and to blanket the ground from excessive gain and loss of heat; and so the work of frost and wind, rain and sun, was much more active. The heights of the land were worn down quicker and sediments more actively deposited, and the scenery was more angular and forbidding. Even long after the first appearance of land-plants vast regions of the land which would now be covered with vegetation remained desert or semi-desert, since all the earliest plants demanded a good deal of moisture.
Plants like grasses, which can thrive on dry steppes and prairies, are comparatively modern things. The Paleozoic Era knew nothing of them and the Mesozoic comparatively little. There was a desert flora and fauna in the Triassic; but possibly at least, the regions it inhabited would today be steppes or savannahs.
It is a good exercise of the scientific imagination to picture this desolate and desert earth, its continents cyclically rising out of the waters and submerging themselves again, occasionally undergoing a spasm of mountain-building or an ice age, but remaining essentially lifeless for well over five hundred of our million-year periods, in spite of the abundant presence and notable progress of life in the waters. Through all these ages, the lands remained unconquered and must have seemed unconquerable.
> “Vegetarian dinosaurs dined on ferns, floating water plants, and the palmlike cycad. They were not very intelligent, and certainly not very French, having developed a limited, strictly specialized diet. When the great mountain building took place during the Cretaceous Period, seaways drained and swamps dried up. First the aquatic plants, then the ferns and cycads succumbed. Insufficient surface water. Some new plants had been gradually moving in, however. These plants were inconspicuous at first, and neither the dinosaurs nor the swamp plants paid them much attention. Ah, but they had plans for the future. They began to grow their roots longer and longer, sink them deeper and deeper, until they could reach the moisture trapped beneath the surface, and when their stringy little exploratory organs hit the water table-POW!” (Bunny smacked the podium; if V’lu and Priscilla hadn’t been awake before, they were now.)
> “POW! They exploded in a scandalous display of sexual invitation.
> “The old claw-and-fang world of drab, predatory, reptilian repression had never seen anything like this. Lasciviously colored, scandalously scented blossom after blossom flaunted its genitalia openly, enticing with visual and heretofore unknown olfactory charms any who might be inclined to sample its pleasures.
> “With their appalling genius for adaptability, insects responded enthusiastically to the outbreak of sensuality. So did the smaller birds. Dinosaurs, however, were repulsed. Although their reproductive equipment must have been monumental-the penis of a Brontosaurus would have been only a couple of yards shorter than the thirty-foot organ of the great blue whale-it was kept out of sight and infrequently used. The dim-witted, thin-blooded dinosaur was not a hot lover, another way in which it differed from the French.” There was a soft ripple of laughter. Very soft. “It mated once a year, barring headaches. So put off was the prudish dinosaur by the sexy smell of flowering plants that it starved to death and went extinct rather than eat them.”
- Tom Robbins, Jitterbug Perfume
Tens of millions of years is a long time. Who knows?
> They provide, through direct human consumption, just over one-half (51%) of all dietary energy;
[1] https://en.wikipedia.org/wiki/Poaceae [2] http://www.fao.org/rice2004/en/f-sheet/factsheet3.pdf