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.
The Devonian | The Carboniferous: Coal Swamps and Glaciers | The Permian | The Great Permian Extinction. Learning Objectives | Terms | Review Questions | Links | References. The Paleozoic era literally translates as the time of ancient life and spans the time period between 544 and 245 million years ago. The Paleozoic is the first of three eras within the Phanerozoic eon (the time of visible life). While life originated during the Archean and increased in complexity during the earlier Proterozoic, the Paleozoic era is marked by the spread of animals with hard preservable parts such as shells and exoskeletons.