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・ Spin–orbit interaction
・ Spin–spin relaxation
・ Spin–statistics theorem
・ Spioenkop Dam
・ Spioenkop Dam Nature Reserve
・ Spiomenia
・ Spion Kop
・ Spion Kop (horse)
・ Spion Kop (mountain)
・ Spion Kop (stadiums)
・ Spion Kop Battlefield Memorials
・ Spion Kop Quarry
・ Spion Kop, Nottinghamshire
・ Spione
・ Spioniades
Spionida
・ Spionidae
・ SPIP
・ Spip
・ Spiperone
・ Spipiyus Provincial Park
・ SPIR
・ Spir
・ Spira
・ Spira (car)
・ Spira (confectionery)
・ Spira (family name)
・ Spira (Final Fantasy)
・ Spira Culture Center
・ Spira Footwear Inc.


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Spionida : ウィキペディア英語版
Spionida

Spionida is an order of marine polychaete worms in the subclass Canalipalpata. Spionids are cosmopolitan and live in soft substrates in the littoral or neritic zones.〔(Annelid Resources )〕
==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.〔〔(Marine Species Identification Portal )〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Spionida」の詳細全文を読む



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