Animal Phyla/Phoronida
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![](//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Phoronis_Maria_Grazia_Montanucci2.jpg/300px-Phoronis_Maria_Grazia_Montanucci2.jpg)
Phoronis hippocrepis, a species of horseshoe worm.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/52/Phoronis_Maria_Grazia_Montanucci2.jpg/300px-Phoronis_Maria_Grazia_Montanucci2.jpg)
- Phoronida
- Name Meaning: Zeus' mistress
- English Common Name: Horseshoe worms
- Major distinguishing characteristics: U-shaped gut
- Approximate number of species described: 20