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

Xanioprion borealis PT9	Xanioprion Kielan - Jaworowska, 1962 PT7	Xanioprion Kielan - Jaworowska, 1962 PT9	Xanioprion sp. A sensu Tonarová et al (2012) PT9	Xanioprion sp. A sensu Tonarová et al (2012) PT5
Xanioprion sp. A sensu Tonarová et al (2012) PT5	Xanioprionidae indet. PT7

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In the Virtual Museum there are total 433 samples

Virtual museum of the Czech Geological Survey, cgs.gov.cz, (C) Czech Geological Survey, 2011, v.1.01 [29.09.2025]