Description
SUBCLASSES AND ORDERS SEOIS MUTABILISOF THE CLASS b 9 <9 e? aratus a cluster of similar-s ized with paradiploid macronuclei on e or more micronuclei; typically ial oral polykinetids ; somatic unevenly spaced around body .. . . . . . . . . . . . . . . . . . . . . . . . . . .Subclass Protocruziidia ratus with polyplo id macronucleus gnificantly larger than micronucle i .. ........ . .. ................................. .... ............ 2 band or bands traversing the s during cell division .. .... .... .. .. .. .... 3 bands absent ............ .. .. .. .. .. .............. 6 al oral polykinetids compl etely g the anterior of a con ical body (i .e ., somatic kineties of dikinetids or ds; often planktonic .. ..... .... ... .... ..... .... . CILIOPHORA, SPIR ... ... .. . ...... .. .. .. ...... ...... Subclass Choreotrichia 3' . Left serial oral polykinetids typically not forming a closed circle around the anterior end .... .... .............. .... .. ... ......... ... ...... ... .... ..... ... 4. Somatic polykinetids or cirri distributed over body ; sometimes sparse or restricted to several spirall ing files ; if dorso-ventrally flattened, Cirri typically restricted to ventral surface ; often benthic ... ..... ...... ............. ...... .. ....... .. ... ..... . 4'. Somatic kinetid s typically dikinetids either in kineties , clustered as bristles , or organized as an equatorial girdle and ventral kinety; often planktonic ....... ... .. ... .... Subclass Oligotrichia 5. Body typically rigid ; during ce ll division , only the ventral somatic intraciliature is replaced; dorsal somatic dikinetids with kinetodesmal fibril ; files of marginal cirri incomplete or absent ; somatic infraciliature retained during encystment. .. ... ... ....... .. Subclass Hypotrichia 5'. Body often flexible ; during cell division , both ventral and typically most of dorsal somatic ciliatures are replaced ; dorsal somatic dikinetids without kinetodesmal fibrils ; somatic infraciliature dedifferentiated during encystment. .. ... .... ...... Subclass Stichotrichia 6. Somatic kineties composed of l polykinetids; oral cavity in posterior half of body ; left serial oral polykinetids conspicuous ... . .... ........... .. ... .. .. . ... .... ...... .. Order Phacodiniida 6'. Somatic kineties of monokinetids or dikinetids .... ....... ............... .. .... .. ............................ ..... .. 7. Body appearing to be twisted in anterior half ; dense perioral or perizonal cilia unusually twisted anterior border of oral cavity; mainly anaerobes ..... ... ........ ... .. .... .. ... ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7' . Body shape otherwise .. .... ............. ........ ....... ...... 8 8. Small , anaerobic, free-liv ing ciliates , about 50 ~m in length ; somatic kineties typically of dikinetids , separated into anteri posterior segments .. ..Order Odontostomatida 8' . Medium-sized, about 100 ~m in length ; endosymbionts of various metazoa laterally compressed ; somatic kineties many and densely packed , usually forming distinct anterior and posterior sutures ........... .. ........ ... .. . . . . . . . . . . . . . .. . . .. . .. . .. . .. . .. . . .... Order Clevela SUBCLASS PROTOCRUZIIDIA de Puytorac, Grain & Mignot, 1987 .... ...... .4 Small ovoid ciliates; body with monokinetid or dikinetid field on right side and dorsal surface ; 5 - 8 (usually six) left, serial oral polykinetids ; right paroral dikinetid ; two barren kinetosomes as dikinetid to posterior and right of oral region ; nuclear apparatus a cluster of similar-sized nuclei .5 with paradiploid macronuclei surrounding one or more micronuclei ; one order.
Type species
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SUBCLASSES AND ORDERS SEOIS MUTABILISOF THE CLASS b 9 <9 e? aratus a cluster of similar-s ized with paradiploid macronuclei on e or more micronuclei; typically ial oral polykinetids ; somatic unevenly spaced around body .. . . . . . . . . . . . . . . . . . . . . . . . . . .Subclass Protocruziidia ratus with polyplo id macronucleus gnificantly larger than micronucle i .. ........ . .. ................................. .... ............ 2 band or bands traversing the s during cell division .. .... .... .. .. .. .... 3 bands absent ............ .. .. .. .. .. .............. 6 al oral polykinetids compl etely g the anterior of a con ical body (i .e ., somatic kineties of dikinetids or ds; often planktonic .. ..... .... ... .... ..... .... . CILIOPHORA, SPIR ... ... .. . ...... .. .. .. ...... ...... Subclass Choreotrichia 3' . Left serial oral polykinetids typically not forming a closed circle around the anterior end .... .... .............. .... .. ... ......... ... ...... ... .... ..... ... 4. Somatic polykinetids or cirri distributed over body ; sometimes sparse or restricted to several spirall ing files ; if dorso-ventrally flattened, Cirri typically restricted to ventral surface ; often benthic ... ..... ...... ............. ...... .. ....... .. ... ..... . 4'. Somatic kinetid s typically dikinetids either in kineties , clustered as bristles , or organized as an equatorial girdle and ventral kinety; often planktonic ....... ... .. ... .... Subclass Oligotrichia 5. Body typically rigid ; during ce ll division , only the ventral somatic intraciliature is replaced; dorsal somatic dikinetids with kinetodesmal fibril ; files of marginal cirri incomplete or absent ; somatic infraciliature retained during encystment. .. ... ... ....... .. Subclass Hypotrichia 5'. Body often flexible ; during cell division , both ventral and typically most of dorsal somatic ciliatures are replaced ; dorsal somatic dikinetids without kinetodesmal fibrils ; somatic infraciliature dedifferentiated during encystment. .. ... .... ...... Subclass Stichotrichia 6. Somatic kineties composed of l polykinetids; oral cavity in posterior half of body ; left serial oral polykinetids conspicuous ... . .... ........... .. ... .. .. . ... .... ...... .. Order Phacodiniida 6'. Somatic kineties of monokinetids or dikinetids .... ....... ............... .. .... .. ............................ ..... .. 7. Body appearing to be twisted in anterior half ; dense perioral or perizonal cilia unusually twisted anterior border of oral cavity; mainly anaerobes ..... ... ........ ... .. .... .. ... ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7' . Body shape otherwise .. .... ............. ........ ....... ...... 8 8. Small , anaerobic, free-liv ing ciliates , about 50 ~m in length ; somatic kineties typically of dikinetids , separated into anteri posterior segments .. ..Order Odontostomatida 8' . Medium-sized, about 100 ~m in length ; endosymbionts of various metazoa laterally compressed ; somatic kineties many and densely packed , usually forming distinct anterior and posterior sutures ........... .. ........ ... .. . . . . . . . . . . . . . .. . . .. . .. . .. . .. . .. . . .... Order Clevela SUBCLASS PROTOCRUZIIDIA de Puytorac, Grain & Mignot, 1987 .... ...... .4 Small ovoid ciliates; body with monokinetid or dikinetid field on right side and dorsal surface ; 5 - 8 (usually six) left, serial oral polykinetids ; right paroral dikinetid ; two barren kinetosomes as dikinetid to posterior and right of oral region ; nuclear apparatus a cluster of similar-sized nuclei .5 with paradiploid macronuclei surrounding one or more micronuclei ; one order.