Echinostomida

flatworm order

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In flatworm: Annotated classification
Order Echinostomida Cercaria with simple tail and many cyst-producing glands; life cycle with 3 hosts; about 1,360 species. Order Plagiorchida Cercaria typically armed with a stylet; encystment in invertebrates, rarely vertebrates; excretory vessels not open to the exterior. Most representatives require 3 hosts to complete one…
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