The Twenty-Eighth Dynasty consisted of a single king, Amyrteaus, prince of Sais, who rebelled against the Persians. He left no monuments with his name. The Twenty-Ninth Dynasty ruled from Mendes. The Thirtieth Dynasty took their art style from the Twenty-Sixth Dynasty, their defeat lead to the re-occupation by the Persians. ...

See also:

Late Period of Ancient Egypt, Late Period of Ancient Egypt - Twenty-Sixth Dynasty, Late Period of Ancient Egypt - Twenty-Seventh Dynasty, Late Period of Ancient Egypt - Twenty-Eighth - Thirtieth Dynasties, Late Period of Ancient Egypt - Thirty-First Dynasty

Read more here: » Late Period of Ancient Egypt: Encyclopedia II - Late Period of Ancient Egypt - Twenty-Eighth - Thirtieth Dynasties