| class | class of echinoderms including the sea cucumbers |
|---|---|
| class | sponges with 6-rayed siliceous spicules |
| class | coelenterates typically having alternation of generations |
| class | used in some classifications |
| class | insects |
| class | oysters |
| class | small free-swimming tunicates |
| class | comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids |
| class | (British) a list issued by examiners that categorizes students according to the class of honours they achieved in their degree examinations |
| class | club mosses and related forms: includes Lycopodiales |
| class | alternative designation for the class Lycopsida |
| class | club mosses and related forms: includes Lycopodiales |