Annelids

The annelids (also called "ringed worms"), formally called Annelida (from French annelés "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.

Source: http://en.wikipedia.org/wiki/Annelid

Pistoprion Kielan - Jaworowska, 1966 PT9	Pistoprion Kielan - Jaworowska, 1966 PT7	Pistoprion Kielan - Jaworowska, 1966 PT9	Pistoprion Kielan - Jaworowska, 1966 PT11	Pistoprion Kielan - Jaworowska, 1966 PT11
Pistoprion Kielan - Jaworowska, 1966 PT11	Pistoprion Kielan - Jaworowska, 1966 PT11	Pistoprion Kielan - Jaworowska, 1966 PT5	Pistoprion Kielan - Jaworowska, 1966 PT5	Pistoprion Kielan - Jaworowska, 1966 PT11
Pistoprion Kielan - Jaworowska, 1966 PT11	Placognatha indet. PT22	Placognatha indet. PT22	Placognatha indet. PT5	Placognatha indet. PT9
Placognatha indet. PT9	Placognatha indet. PT5	Placognatha indet. PT9	Placognatha indet. PT11	Plumulites fraternus JH1172

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In the Virtual Museum there are total 392 samples

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