- The Mesozoic Era is the second-to-last era of Earth’s geological history, lasting from about 252 to 66 million years ago, comprising the Triassic, Jurassic and Cretaceous Periods. It is characterized by the dominance of archosaurian reptiles, such as the dinosaurs; a hot greenhouse climate; and the tectonic break-up of Pangaea. The Mesozoic is the middle of the three eras since complex life evolved: the Paleozoic, the Mesozoic, and the Cenozoic.
- Everett — Thumbnail History (historylink.org)
Once called the “City of Smokestacks,” Everett has a long association with industry and labor. Its first beginnings were two Native American settlements at opposite sides of the heavily wooded region, one on the Snohomish River and the other on Port Gardner Bay. Platted in the 1890s and named after the son of an early investor, it soon attracted the attention of East Coast money. Over the next 100 years, Everett would be a formidable logging mill and industrial center. In 2005, Everett numbered 96,000 citizens.
- Cretaceous–Paleogene extinction event (Wikipedia)
The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs. Most other tetrapods weighing more than 25 kilograms (55 pounds) also became extinct, with the exception of some ectothermic species such as sea turtles and crocodilians. It marked the end of the Cretaceous period, and with it the Mesozoic era, while heralding the beginning of the Cenozoic era, which continues to this day.