66 million years ago...................Constitution ave...........from DC into VA................via the Memorial bridge........one of them....................becomes 66 West...............

Cretaceous–Paleogene extinction event - Wikipedia, the ...

https://en.wikipedia.org/.../Cretaceous–Paleogene_extinction_e...

Wikipedia

... on Earth—including all non-avian dinosaurs—that occurred over a geologically short period of time, 66 million years ago. It marked the end of the Cretaceous  ...

‎Chicxulub crater - ‎K-T boundary - ‎Chicxulub impactor - ‎Impact winter

Cretaceous: Extinction of the Dinosaurs

paleobiology.si.edu/geotime/.../cretaceous4.html

Smithsonian Institution

Extinction of the Dinosaurs Perhaps the most notable event of the Cretaceous was its conclusion. About 65 million years ago the second greatest mass  ...

Dinosaur Extinction - National Geographic

science.nationalgeographic.com/.../dinosaur...

National Geographic Society

Sixty-five million years ago the last of the non-avian dinosaurs went extinct. So too did the giant mosasaurs and plesiosaurs in the seas and the pterosaurs in the  ...

Dinosaur-Killing Asteroid Triggered Global Winter 66 Million ...

news.nationalgeographic.com/.../140512-ast...

National Geographic Society

May 14, 2014 - An asteroid hitting Mexico's Yucatan some 66 million years ago is shown in this computer depiction. ILLUSTRATION BY JOE TUCCIARONE,  ...

Why Did the Dinosaurs Die Out? - Facts & Summary ...

www.history.com/topics/why-did-the-dinosaurs-die-out

History

Dinosaurs roamed the earth for 160 million years until their sudden demise some 65.5million years ago, in an event now known as the Cretaceous-Tertiary,  ..