Diorama of the Burgess Shale biota, once displayed at the Smithsonian Institution's National Museum of Natural History. The Burgess Shale is a Cambrian-aged deposit in British Columbia that shows remarkable preservation of the soft bodies of animals that evolved shortly after the Cambrian Explosion. The diorama is now housed at the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York.
Learn more about this and other Smithsonian dioramas now at PRI at: https://www.priweb.org/blog-post/vanished-worlds.
Model by Emily Hauf.