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Haplotaxis Gordioides
''Haplotaxis'' is a genus of annelids belonging to the family Haplotaxidae. The genus has cosmopolitan distribution. Species: *''Haplotaxis acystis'' *''Haplotaxis aedeochaeta'' *''Haplotaxis ascaridoides'' *''Haplotaxis bretscheri'' *''Haplotaxis carnivorus'' *''Haplotaxis dubius'' *''Haplotaxis emissarius'' *''Haplotaxis gastrochaetus'' References {{Taxonbar, from=Q5168358 Haplotaxida Annelid genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annelid
The annelids (), also known as the segmented worms, are animals that comprise the phylum Annelida (; ). The phylum contains over 22,000 extant species, including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecologies – some in marine environments as distinct as tidal zones and hydrothermal vents, others in fresh water, and yet others in moist terrestrial environments. The annelids are bilaterally symmetrical, triploblastic, coelomate, invertebrate organisms. They also have parapodia for locomotion. Most textbooks still use the traditional division into polychaetes (almost all marine), oligochaetes (which include earthworms) and leech-like species. Cladistic research since 1997 has radically changed this scheme, viewing leeches as a sub-group of oligochaetes and oligochaetes as a sub-group of polychaetes. In addition, the Pogonophora, Echiura and Sipuncula, previously regarded as separate phyla, are now regarded as sub-grou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
