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   Falcatus
   Falcatus is an extinct genus of Falcatidae which lived during the early Carboniferous Period in Bear Gulch bay and what is now Missouri. It was a 25-30 cm or 10-12 inches long "cladodont-toothed stethacanthid shark" The first material known from the genus were the prominent fin spines that curved a...
   Found op http://en.wikipedia.org/wiki/Falcatus
   
   

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