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      The annelids (also called "ringed worms"), formally called Annelida (from French annels "ringed ones", ultimately from Latin anellus "little ring"), are a large phylum of segmented worms, with over 17,000 modern species including ragworms, earthworms and leeches. They are found in marine environments from tidal zones to hydrothermal vents, in freshwater, and in moist terrestrial environments. Although most textbooks still use the traditional division into polychaetes (almost all marine), oligochaetes (which include earthworms) and leech-like species, 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-groups of polychaetes. Annelids are considered members of the Lophotrochozoa, a "super-phylum" of protostomes that also includes molluscs, brachiopods, flatworms and nemerteans.

Annelida Lamarck, 1809 PB2147483647
Annelida Lamarck, 1809 PB4000
Chuchliona harusca M12387
Chuchliona harusca M12410
Chuchliona haruscanajdr (1983b), Pl. 1, fig. 4 M12390
Chuchliona haruscanajdr (1983c), Pl. 1, fig. 5 M12400
Chuchliona harusca M12393
Chuchliona haruscanajdr (1983b), Pl. 1, fig. 2 M12389
Chuchliona haruscanajdr (1983b), Pl. 1, fig. 6 M12391
Chuchliona harusca M12406
Chuchliona harusca M12397
Chuchliona harusca M12395
Chuchliona harusca M13082
Chuchliona harusca M12401
Chuchliona harusca M12402
Chuchliona harusca M12403
Chuchliona haruscanajdr (1983b), Pl. 2, fig. 6, 7 M4653
Chuchliona haruscanajdr (1983b), Pl. 2, fig. 5 M12392
Chuchliona harusca M12399
Chuchliona harusca M12407

Virtual museum of the Czech Geological Survey,, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]