This is just here as a test because I lose it
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According to Forey 1988, History of the Coelacanth fish: 'In placoderms there are large overlapping plates which completely encircle the body and superficially may be matched with those in osteichthyans (Stensio, 1959; Forey, 1980; Jarvik, 1980). Thus, the anterior median ventral, anteroventral and anterior lateral of placoderms lie in the same positions as the interclavicle, clavicle (ventral cleithrum) and cleithrum (dorsal cleithrum) of osteichthyans.'