Talk:Monogenea

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what made class monogenea be a sparate class ??? what made it more developed than turbellaria ???\

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According to Animals without Backbones (R Buchsbaum), Monogeneans are separate due to loss of external cilia (they are not free living like the turbellarians), and the development of a special epidermis which prevents them from being digested. Monogeneans have an enormously developed sucker. One more difference according the Buchsbaum is the Turbellarians are seen in commensal and mutualistic relationships, while Monogeneans are parasitic. Hope this helps. Avigon 18:55, 28 September 2006 (UTC)