Spionida
Sign in to saveSpionida is an order of marine polychaete worms in the infraclass Canalipalpata. Spionids are cosmopolitan and live in soft substrates in the littoral or neritic zones.
Species
スピオ目
Order
- PhylumAnnelida
- ClassPolychaeta
- OrderSpionida
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Wikidata facts
- Instance of
- taxon
- Parent taxon
- Canalipalpata
- Image
- Magelona johnstoni.jpg
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- taxon rank
- order
- Commons category
- Spionida
- taxon name
- Spionida
- topic's main category
- Category:Spionida
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Encyclopedic overview
3 sectionsContents
- Characteristics
- Families
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Spionida is an order of marine polychaete worms in the infraclass Canalipalpata. Spionids are cosmopolitan and live in soft substrates in the littoral or neritic zones.
==Characteristics== Spionids have a single pair of flexible feeding tentacles with grooves, arising directly from the prostomium. The mouth has no jaws and the pharynx is partly eversible. Some species have small eye spots and some a central sensory lobe. Some of the anterior segments paired gills. The parapodia or lateral lobes have large lamellae. The chaetae are unbranched capillaries, spines and hooks.
Excerpted from Wikipedia’s “Spionida” article, available under the CC BY-SA 4.0 licence.