Timeline of plant evolution to the present. In Jericho (modern Israel), there is a settlement with about 19,000 people. At the same time, Sahara is green with rivers, lakes, cattle, crocodiles and monsoons. At 8 ka, Common (Bread) wheat ("Triticum aestivum") originates in southwest Asia due to hybridisation of emmer wheat with a goat-grass, "Aegilops tauschii". At 6.5 ka, two rice species are domesticated: Asian rice, "Oryza sativa", and African rice "Oryza glaberrima". Timeline of plant evolution This article attempts to place key plant innovations in a geological context. It concerns itself only with novel adaptations and events that had a major ecological significance,
Rissoina oryza oblique. This species occurs in the Red Sea and in the South Pacific off the Fiji Islands. Rissoina oryza Rissoina oryza is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae. The height of the small, white shell attains 2 mm. The shell has an oblong-ovate shape. It is solid, smooth, and shining, The spire is moderately elevated, and rather rapidly tapering. The apex is obtuse. The 6-7 whorls are flatly convex. The body whoprl is rather large, and slightly compressed beneath. The suture is faintly impressed and broadly margined beneath. The rather