| class | comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves |
|---|---|
| class | warm-blooded vertebrates characterized by mammary glands in the female |
| class | protozoa having flagella |
| class | used in some classifications |
| 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 | comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids |
| class | true mosses: bryophytes having leafy rather than thalloid gametophytes: comprises orders Andreaeales |
| class | arthropods having the body composed of numerous double somites each with two pairs of legs: millipedes |
| class | the class of true slime molds |
| class | ctenophores lacking tentacles |
| class | earthworms |
| class | enigmatic small elongated wormlike terrestrial invertebrates of damp dark habitats in warm regions |