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.
146 to 65 million years ago. 1  Pangaea continued to separate into smaller continents. 2  A wide variety of dinosaurs roamed the land. 3  Birds flourished and spread all over the globe. 4  Flowering plants developed. 5  Mammals flourished. 6  Dinosaurs became extinct by the end of the period. The extinction, the second largest of all time, marked the end of the Age of Reptiles and the beginning of the Age of Mammals. Dinosaurs that lived during the Cretaceous period include: