Explore Milwaukee County (Click on picture) Milwaukee County, created in 1834 as a territorial county, is derived from a Native American word Mahnawaukee-Seepe meaning gathering place by the river.. Located in southeast Wisconsin, the county seat is Milwaukee.
The Cretaceous-Tertiary extinction event, or the K-T event, is the name given to the die-off of the dinosaurs and other species that took place some 65.5 million years ago. For many years, paleontologists believed this event was caused by climate and geological changes that interrupted the dinosaursâ food supply.
The Mesozoic began 245 million years ago and ended 64.6 or 65 million years ago. Contrary to what most people believe, dinosaurs didn't become extinct just by a meteor impact, there are more reasons: -A change in the polarity of Earth's magnetic field-Multiple meteor impacts.he Mesozoic began 245 million years ago and ended 64.6 or 65 million years ago. Contrary to what most people believe, dinosaurs didn't become extinct just by a meteor impact, there are more reasons: -A change in the polarity of Earth's magnetic field-Multiple meteor impacts.