Yellow gemstones meaning is enlightening, wisdom, Cheeriness, joy, action, optimism, happiness, idealism, summer, hope, imagination, sunshine, philosophy, youth. The color yellow also symbolizes the sun. For those born in the month of November, Yellow is the color of their birthstones as yellow Topaz and Citrine.
The Cretaceous Period (146-65 million years ago). In the early Cretaceous, many of the southern continents were still joined together as part of the southern landmass called Gondwana.Northern continents formed the great landmass Laurasia. Australia was joined to Antarctica, New Zealand and South America, forming the last remnant of the great southern landmass called Gondwana. 2  About 80 million years ago New Zealand drifted away from the rest of Gondwana. 3  The Australian part of Gondwana was located close to the South Pole.
The Cretaceous Period is the final period of the Mesozoic Era. It covered the time span of 144 million years ago to 65 million years ago. There was a minor mass extinction at the end of the Jurassic Period that is the sign of the beginning of the Cretaceous.