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PennsylvanianThe Pennsylvanian is a geologic (sub)period lasting from roughly 325 million years before the present (BP) to 286 million years BP. As with most other geologic periods, the rock beds that define the period are well identified, but the exact date of the st PennsylvaniaPennsylvania (the Commonwealth of Pennsylvania is one of four states of the United States of America that is called a commonwealth. It has given its name to the Pennsylvanian time period in geology. Pennsylvania is called the Keystone State. Although Swed Pennsylvania class battleshipThe Pennsylvania-class battleships, of the United States Navy, were an enlargement of the Nevada class; having two additional 14 in (356 mm) 45 caliber main battery guns, greater length and displacement, four propellers and slightly higher speed. They als Pennsylvania Avenue, Washington D.C.Old Post Office building Pennsylvania Avenue is an important street in the United States capital, Washington, D. The street runs for seven miles inside Washington, but the stretch from the White House to the United States Capitol building is considered th Pennsylvania Road WarriorsThe Pennsylvania Road Warriors are a minor league baseball team operated by the Atlantic League. The team has no affiliation with any Major League Baseball team. The team has no home field, and plays all of its games on the road. The league is working to Pennsylvania State Athletic ConferenceThe Pennsylvania State Athletic Conference PSAC is a College Athletic Conference which is made up exclusively of public schools in Pennsylvania. It participates in the NCAA's Division II. Member schools Bloomsburg University of Pennsylvania California Uni Pennsylvania Turnpike Pennsylvania Dutch Pennsylvania German language Pennsylvania Station Pennsylvania Railroad Pennsylvania library system Pennsylvania Constitution of 1776 Pennsylvania Dutchified English Pennsylvanian (Amtrak)