Phoronis

Phoronis is one of the two genera of the horseshoe worm family (Phoronidae), in the phylum Phoronida. The body has two sections, each with its own coelom. There is a specialist feeding structure, the lophophore, which is an extension of the wall of the coelom and is surrounded by tentacles. The gut is U-shaped. The diagnostic feature that distinguishes this genus is the lack of epidermal invagination at the base of the lophophore. These worms are filter feeders.[2]

This article is about the horseshoe worm genus. For other uses, see Phoronis (disambiguation).

Phoronis
Phoronis hippocrepia
Scientific classification
Kingdom: Animalia
Clade: Lophophorata
Phylum: Phoronida
Family: Phoronidae
Genus: Phoronis
Wright 1856
Type species
Phoronis ovalis
Wright 1856
Species
  • P. australis Haswell 1883
  • P. emigi Hirose et al. 2014
  • P. hippocrepia Wright 1856
  • P. ijimai Oka 1897
  • P. muelleri Selys-Lonchamps 1903
  • P. ovalis Wright 1856
  • P. pallida (Schneider 1862) Silén 1952
  • P. psammophila Cori 1889[1]
Synonyms
  • Actinotrocha Müller 1846
  • Phoronella Haeckel 1896

Its larva is an Actinotrocha.

Taxonomy

Phronis architecta is no longer accepted and is considered to be a synonym of Phoronis psammophila. Similarly Phoronis vancouverensis is considered to be a synonym of Phoronis ijimai.[3]

References
  1. World Register of Marine Species
  2. Phoronida
  3. ITIS


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