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            Characteristics of Each Phase
          
        
        
          
            
              • The Sandrakatsy and Mahilaka Phases (from the 9th to the 16th century)
            
          
        
        
          These phases, for the most part, represent the pre-European sites
        
        
          of our region. Sites from this period are generally small – less
        
        
          than half a hectare – however they gradually evolved and some
        
        
          became important sites.
        
        
          The majority of the artifacts excavated are local pottery
        
        
          (graphitized or mica), and fragments of chlorite schist. This type
        
        
          of material is common to all Malagasy archaeological sites of
        
        
          this period, but the east coast seems to have preserved the best
        
        
          chlorite schist crockery. The Antamponilongovato-Angazety site was reoccupied in the 18th century. More than 500 fragments and
        
        
          remains were discovered at Ampasamaro, on the left bank of the Mangoro River, however only two of them are graphitized.
        
        
          This site is part of a series of ancient villages along the Mangoro River, established by the Bezanozano ancestors who claimed to be
        
        
          of
        
        
          
            Vazimba
          
        
        
          origin, therefore very old.
        
        
          Often, settlements moved when those who lived there felt like they had become victims of a curse, for example, in times of
        
        
          rampant disease or successive poor harvests. At this time, the opinion of the
        
        
          
            Ombiasy
          
        
        
          (diviner), traditional healers, and that of the
        
        
          
            Tangalamena
          
        
        
          (traditional authorities) was decisive.
        
        
          
            
              • Sites of the Ambitsika Phase (17th-18th Century)
            
          
        
        
          The number of sites increased significantly during this period as evidenced by the presence of
        
        
          traditional local pottery and fragments of ceramics imported from Europe, manufactured in
        
        
          France, the Netherlands (see Ambodibonara site) or China (a few pieces of Celadon and
        
        
          some blue and white ceramics). At the Ambodibonara site, a perfume flask was found.
        
        
          Compared to the artifacts found in the above mentioned period,
        
        
          at this time the graphited local pottery was of a poorer quality
        
        
          according to the national reference criteria and chlorite schist was
        
        
          still present in the area.