1. 
   Echinostomida
   The Echinostomida are an order of flatworms, belonging to the large group Digenea. Apart from the suborders listed, the superfamily Notocotyloidea and the family Pachytrematidae are also placed here as more basal taxa incertae sedis.{Verify source|date=February 2008} == Life cycle == The adult inha...
   Found op http://en.wikipedia.org/wiki/Echinostomida
   
   
2. 
   Echinostomida
   (from the article `flatworm`) ...StrigeatoideaCercaria (immature form) fork-tailed; penetration glands present; 1–2 pairs of protonephridia.Order EchinostomidaCercaria with simple ...
   Found op http://www.britannica.com/eb/a-z/e/7
   
   

Tip: double click on a word to show its meaning.