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.
Long before the dinosaurs, at the end of the Permian Period, something triggered Earth's most profound mass extinction and reset the evolution of life on this planet. The clues suggest it was not the result of an asteroid impact, the likely cause of the dinosaur extinction later on.