Changing exhibitions present a broad range of themes, eras and genres. These were the traditional disciplines of the medieval and early modern eras. Each of these eras portray distinct stereotypes. Filmmakers may mix incidents and events from different historical eras. The Pala period is considered one of the golden eras of Bengali history. Music notation developed further in the Renaissance and Baroque music eras. This capped one of the most successful eras in Fulham history. Umbral Eras are followed by periods of enlightenment and cultural growth called Astral Eras. Eorzea's history revolves around a series of Umbral and Astral Eras. Kelly's genius is her ability to mix elements from all different eras, styles and periods. The sack marked the end of one of the most splendid eras of modern Rome. Richard Strauss was a leading composer of the late Romantic and early modern eras. The different eras of the universe are shown. The book divides Seagal's filmography into different chronological "eras" with distinct thematic elements. Migrants from the two latter eras still represent the genetic heritage of most Irish people.