Species (61)
- Cosmarium tetraophthalmum
- Cosmarium tetragonum
- Cosmarium sublobatum
- Cosmarium thwaitesii
- Cosmarium tinctum
- Cosmarium turgidum
- Cosmarium turpinii
- Cosmarium undulatum
- Cosmarium venustum
- Cosmarium ungerianum
- 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
- Cosmarium attenuatum
- Cosmarium amoenum
- Cosmarium bioculatum
- Cosmarium biretum
- Cosmarium brebissonii
- Cosmarium broomei
- Cosmarium botrytis
- Cosmarium caelatum
- Cosmarium reniforme