Sipunculans
   HOME



picture info

Sipunculans
The Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a class containing about 162 species of sea, marine Annelid, annelid worms, that have secondarily lost their segmentation. Sipuncula was once considered a phylum of unsegmented worms, but was demoted to a class of Annelida, based on recent molecular work. Sipunculans vary in size but most species are under in length. The body is divided into an unsegmented, bulbous trunk and a narrower, Anatomical terms of location#Anterior and posterior, anterior section, called the "introvert", which can be retracted into the trunk. The mouth is at the tip of the introvert and is surrounded in most groups by a ring of short tentacles. With no hard parts, the body is flexible and mobile. Although found in a range of habitats throughout the world's oceans, the majority of species live in shallow water habitats, burrowing under the surface of sandy and muddy substrates. Others live under stones, in rock crevices or i ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  




Golfingiidae
Golfingiidae is a family of peanut worms. Species ''Golfingia'' * ''Golfingia anderssoni'' (Théel, 1911) * ''Golfingia birsteini'' Murina 1973 * ''Golfingia capensis'' (Teuscher, 1874) * ''Golfingia elongata'' (Keferstein, 1862) * ''Golfingia iniqua'' (Sluiter, 1912) * ''Golfingia margaritacea'' (Sars, 1851) * ''Golfingia mirabilis'' Murina 1969 * ''Golfingia muricaudata'' (Southern, 1913) * ''Golfingia pectinatoides'' Cutler and Cutler, 1979 * ''Golfingia vulgaris'' (de Blainville, 1827) ''Nephasoma'' * ''Nephasoma abyssorum'' (Koren and Danielssen, 1875) * ''Nephasoma bulbosum'' (Southern, 1913) * ''Nephasoma capilleforme'' (Murina, 1973) * ''Nephasoma confusum'' (Sluiter, 1902) * ''Nephasoma constricticervix'' (Cutler, 1969) * ''Nephasoma constrictum'' (Southern, 1913) * ''Nephasoma cutleri'' (Murina, 1975) * ''Nephasoma diaphanes'' (Gerould, 1913) * ''Nephasoma eremita'' (Sars, 1851) * ''Nephasoma filiforme'' (Sluiter, 1902) * ''Nephasoma flagriferum'' (Selenka, 1885) * ''Ne ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  



MORE