Species (22.489)
- Conorboides ornata
- Conorboides paraspis
- Conorotalites bartensteini
- Conosphaera fleuryi
- Conosphaera sphaeroconus
- Comatricha nodulifera
- Cornusphaera grandis
- Corollithion exiguum
- Cosmarium colpopelta
- Cosmarium commissurale
- Cosmarium connatum
- Cosmarium conspersum
- Cosmarium corbula
- Cosmarium cristatum
- Cosmarium crenatum
- Cosmarium cruciferum
- Cosmarium curtum
- Cosmarium cucumis
- Cosmarium cucurbita
- Cosmarium cylindricum
- Cosmarium depressum
- Cosmarium debaryi
- Cosmarium lagenarium
- Cosmarium gemmiferum
- Cosmarium granatum
- Cosmarium latum
- Cosmarium margaritiferum
- Cosmarium meneghinii
- Cosmarium moniliforme
- Cosmarium naegelianum
- Cosmarium orbiculatum
- Cosmarium notabile
- Cosmarium ornatum
- Cosmarium ovale
- Cosmarium palangula
- Cosmarium papilio
- Cosmarium phaseolus
- Cosmarium parvulum
- Cosmarium pluviale
- Cosmarium polygonum
- Cosmarium portianum
- Cosmarium praemorsum
- Cosmarium protractum
- Cosmarium pusillum
- Cosmarium pyramidatum
- Cosmarium quadratum
- Cosmarium ralfsii
- Cosmarium rupestre
- Cosmarium striolatum
- Cosmarium sportella
- Codonomonas pascheri
- Codosiga pyriformis
- Codosiga botrytis
- Codosiga sinuosa
- Colponema globosum
- Corythium dubium
- Coskinolinoides texanus
- Cosmarium attenuatum
- Cosmarium amoenum
- Cosmarium bioculatum
- Cosmarium biretum
- Cosmarium brebissonii
- Cosmarium broomei
- Cosmarium botrytis
- Cosmarium caelatum
- Leocarpus fragilis
- Lepidoderma chailletii
- Lepidoderma crustaceum
- Lepidoderma elongatum
- Lepidoderma granuliferum
- Lepidodermopsis leonium
- Asterionella formosa ssp. formosa
- Lepocinclis acicularis
- Lepocinclis globosa
- Lepocinclis hispidula
- Lepocinclis marssonii
- Lepocinclis obtusa
- Lepocinclis ovum
- Leptophrys elegans
- Lequereusia spiralis
- Lesquereusia jurassica
- Phormidium inudatum
- Licea tenera
- Lieberkühnia wageneri
- Lepocinclis texta
- Leptodinium tenuicornutum
- Licea chelonoides
- Licea castanea
- Licea fimicola
- Licea erecta
- Licea marginata
- Licea punktiformis
- Licea pedicellata
- Licea pumila
- Licea pusilla
- Licea tuberculata
- Lithraphidites quadratus
- Physarum nutans
- Lituotuba nothi
- Difflugia oblonga ssp. oblonga