Basically, Italy witnessed the following style periods in art:

Byzantine phase -- 6th-12th centuries

Romanesque --10th-12th c. concurrent with Byzantine, but never strong

Italo-Byzantine --1200-1275, very important, the Italian version of

Byzantine. [As a footnote, Gothic style is foreign to Italy.]

Late Medieval --1275-1400--period of intense work, immense import to

style development

Early Renaissance----15th century

Neo-Platonic – c. 1480 to 1500 concurrent with Early Renaissance

High Renaissance---1500-1520 (death of Raphael)
Mannerism--1520-1600