Raphidiophrys
| Raphidiophrys | |
|---|---|
| Raphidiophrys contractilis | |
| Scientific classification | |
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| Order: | Acanthocystida | 
| Family: | |
| Genus: | Raphidiophrys Archer 1867 | 
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Raphidiophrys is a genus of centrohelid with radiating axopodia. R. intermedia is found in the bottom sludge of freshwater bodies in Canada, Chile, Argentina, Australia, New Zealand, Malaysia, Russia, and central Europe. Raphidiophrys have bipartite scales are a defining characteristic among species. Differences in type and size of scales are used to differentiate amongst the members of this genus. The genus Raphidiophrys was discovered in 1867 by W. Archer. Raphidiophrys is one of very few centrohelids in which dimorphism has been shown.