Annelida

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Related to Annelids: Arthropods, Platyhelminthes, Echinoderms
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Annelida - segmented worms: earthwormsAnnelida - segmented worms: earthworms; lugworms; leeches
animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animals
annelid, annelid worm, segmented worm - worms with cylindrical bodies segmented both internally and externally
Archiannelida, class Archiannelida - a class of Annelida
class Polychaeta, Polychaeta - marine annelid worms
class Hirudinea, Hirudinea - hermaphroditic aquatic or terrestrial or parasitic annelids
phylum - (biology) the major taxonomic group of animals and plants; contains classes
References in classic literature ?
But it is conceivable that the now utterly lost branchiae might have been gradually worked in by natural selection for some quite distinct purpose: in the same manner as, on the view entertained by some naturalists that the branchiae and dorsal scales of Annelids are homologous with the wings and wing-covers of insects, it is probable that organs which at a very ancient period served for respiration have been actually converted into organs of flight.
The nematodes belonged to the species Nygolaimus and the annelids to a morphospecies of the family Lumbriculidae.
2009) includes molluscs, annelids, nemertines, the lophophorates, platyhelminths, and other smaller phyla).
In an apparently similar kind of ciliary feeding by sessile animals (sabellid and serpulid annelids, entroprocts), the opposed bands are composed of cilia of equal length (Henderson and Strathmann, 2000; Riisgard et al.
Onychophoran worms are rare and most biologists have never seen them alive, but they are important because they have been considered "missing links" between annelids and arthropods as well as "living fossils" because their shape has not changed for 500 million years (Monge-Najera 1995, Hou and Bergstrom 1997).
Similar egg-surface phenomena occur in zygotes of some other invertebrates, such as nematodes (8) and annelids (9).
Key words: Sand with rock fragments beach, intertidal zone, annelids, polychaetes, Sao Sebastiao Channel, Brazil.
Direct and indirect development, feeding and nonfeeding larvae, and gradual and catastrophic metamorphoses are all manifest among annelids.
2] zinc finger family that has been characterized in three protostome phyla: annelids, arthropods, and nematodes (Fay et al.
Many annelids, including marine worms, segmented worms and leeches have their blood green.
39-57), the morphologically disparate eyes of annelids may not function using homologous molecular components of phototransduction.