Takes the same shape of the plant or animal. The space is sometimes filled with mud. The mud hardens and turns into rock. Cast are often made from a mold. The inside of the sedimentary rock isn't hollow.
American Bandstand, 1957. Dick Clark became host of the locally-produced Bandstand in 1956, just before the show was renamed American Bandstand, shortened to ninety minutes, and expanded to a national ABC audience on August 5, 1957.
Dick Clark's Legendary 32-Year Television Show. Dick Clark hosting American Bandstand in the late 1950s. Music. After premiering on October 7, 1952, on Philadelphia public television station WFIL-TV, American Bandstand (originally Bandstand) went on to become one of the most influential television movements of the 1950s through the 1980s.