subclass Arecidae
— Noun
– English
～ one of four subclasses or superorder of Monocotyledones; comprises about 6400 species in 5 families of trees and shrubs and terrestrial herbs and a few free-floating aquatics including: Palmae; Araceae; Pandanaceae and Lemnaceae
subclass Dibranchia
— Noun
– English
～ comprising all living cephalopods except the family Nautilidae: the orders Octopoda (octopuses) and Decapoda (squids and cuttlefish)
subclass Homobasidiomycetes
— Noun
– English
～ category used in some classification systems for various basidiomycetous fungi including e.g. mushrooms and puffballs which are usually placed in the classes Gasteromycetes and Hymenomycetes
subclass Liliidae
— Noun
– English
～ one of four subclasses or superorders of Monocotyledones; comprises 17 families including: Liliaceae; Alliaceae; Amaryllidaceae; Iridaceae; Orchidaceae; Trilliaceae
subclass Rhizopoda
— Noun
– English
～ creeping protozoans: amoebas and foraminifers
subclass Anapsida
— Noun
– English
～ oldest known reptiles; turtles and extinct Permian forms
subclass Entomostraca
— Noun
– English
～ in some older classifications includes the Branchiopoda and Copepoda and Ostracoda and Cirripedia; no longer in technical use
subclass Opisthobranchia
— Noun
– English
～ gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares
subclass Crossopterygii
— Noun
– English
～ fishes having paired fins resembling limbs and regarded as ancestral to amphibians
subclass
— Noun
– English
～ (biology) a taxonomic category below a class and above an order
subclass Dilleniidae
— Noun
– English
～ a group of families of more or less advanced trees and shrubs and herbs having either polypetalous or gamopetalous corollas and often with ovules attached to the walls of the ovary; contains 69 families including Ericaceae and Cruciferae and Malvaceae; sometimes classified as a superorder
subclass Dibranchiata
— Noun
– English
～ comprising all living cephalopods except the family Nautilidae: the orders Octopoda (octopuses) and Decapoda (squids and cuttlefish)
subclass Cnidosporidia
— Noun
– English
～ single-host parasites of lower vertebrates and invertebrates
subclass Alismatidae
— Noun
– English
～ one of four subclasses or superorders of Monocotyledones; comprises about 500 species in 14 families of aquatic and semiaquatic herbs
subclass Heterobasidiomycetes
— Noun
– English
～ category used in some classification systems for various basidiomycetous fungi including rusts and smuts
subclass Branchiopoda
— Noun
– English
～ primitive aquatic mainly freshwater crustaceans: fairy shrimps; brine shrimps; tadpole shrimps; can shrimps; water fleas