_Attalus of ATTALID __________
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                          _Attalus ATTALID ____|
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 _Attalus ATTALID _______|
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|--Attalus I Soter ATTALID 
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|                                               _Seleucus I Nicator SELEUCID _+
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|                         _Achaeus SELEUCID ___|
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|                        |                     |_Apama of SOGDIAN ____________
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|_Antiochis of SELEUCID _|
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