Description
Retractable dorsal ciliary tuft , absent in Entodinium, may cover at least 1/3 of body perimeter ; oral cilia retractable ; skeletal plates typically present ; 18 genera. b 9 <9 6? 1. Oral ciliary field only ... .... ... .... .... .. Entodinium 1'. Oral cil iary field and dorsal tuft of cilia .. ... ... .. .. 2 2. Dorsal tuft near anterior end, compact , extends <1/3 way around body ..... ..... .... .. ... ......... ... ... .... .3 2' . Dorsal tuft near cell equator, longer, at least 1/3 way around body .. ..... .... ... .. . Ophryosco/ex 3. One narrow, trumpet-shaped skeletal plate .. ...... .... .. .. .... .. .... ...... .... ..... ... ........... .. Eudiplodinium 3'. One broad or several fused plates ... .. ... ...... .... .... .4 4. One broad skeletal plate .. ......... Ostracodinium 4' . Three more or less fused plates .... ... .. ... .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Type species
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Raw text
Retractable dorsal ciliary tuft , absent in Entodinium, may cover at least 1/3 of body perimeter ; oral cilia retractable ; skeletal plates typically present ; 18 genera. b 9 <9 6? 1. Oral ciliary field only ... .... ... .... .... .. Entodinium 1'. Oral cil iary field and dorsal tuft of cilia .. ... ... .. .. 2 2. Dorsal tuft near anterior end, compact , extends <1/3 way around body ..... ..... .... .. ... ......... ... ... .... .3 2' . Dorsal tuft near cell equator, longer, at least 1/3 way around body .. ..... .... ... .. . Ophryosco/ex 3. One narrow, trumpet-shaped skeletal plate .. ...... .... .. .. .... .. .... ...... .... ..... ... ........... .. Eudiplodinium 3'. One broad or several fused plates ... .. ... ...... .... .... .4 4. One broad skeletal plate .. ......... Ostracodinium 4' . Three more or less fused plates .... ... .. ... .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .