The Smithsonian magazine museumday is Saturday, September 26, 2009. Find out more at this website . "Enjoy free general admission for ...

This plant is known as Equisetum or common names Horsetail reed or pewterwart. It is known as a living fossil. The plant is a descendant...

The following are images of Lower Carboniferous Period (Mississippian) fossils. This first one is a elliptical crinoid columnal segment fro...