French lensmaker Essilor International SA agreed to buy Luxottica Group SpA, the maker of Ray-Ban sunglasses, for about 22.8 billion euros ($24 billion) in stock, combining the largest manufacturer and retailer in eyewear and creating an e-commerce contacts and eyewear powerhouse.
The Permian Period was the final period of the Paleozoic Era. Lasting from 299 million to 251 million years ago, it followed the Carboniferous Period and preceded the Triassic Period. By the early Permian, the two great continents of the Paleozoic, Gondwana and Euramerica, had collided to form the supercontinent Pangaea.
Introduction. The Permian period was named in 1841 by the geologist Murchison after a tour of Imperial Russia to include the vast series of beds of marls, schists, limestones, sandstones, and conglomerates that overlay the Carboniferous formations in the eastern part of thecountry.