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 discovery that birds are a type of dinosaur showed that dinosaurs in general are not, in fact, extinct as is commonly stated. However, all non-avian dinosaurs as well as many groups of birds did suddenly become extinct approximately 66 million years ago.hile modern dinosaurs (birds) are generally small due to the constraints of flight, many prehistoric dinosaurs were large-bodiedâthe largest sauropod dinosaurs are estimated to have reached lengths of over 40 meters (130 feet) and heights of 18 meters (59 feet) and were the largest land animals of all time.