Phoronid

Phoronids (scientific name Phoronida, sometimes called horseshoe worms) are a small phylum of marine animals that filter-feed with a lophophore (a "crown" of tentacles), and build upright tubes of chitin to support and protect their soft bodies. They live in most of the oceans and seas, including the Arctic Ocean but excluding the Antarctic Ocean, and between the intertidal zone and about 400 meters down. Most adult phoronids are 2 cm long and about 1.5 mm wide, although the largest are 50 cm long.

Phoronids
Phoronis sp.
Phoronopsis harmeri
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Clade: Brachiozoa
Phylum: Phoronida
Hatschek, 1888
Genera

The name of the group comes from its type genus: Phoronis.

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