Library / English Dictionary

CLASS PTERIDOSPERMOPSIDA

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies

Synonyms:

class Pteridospermopsida; Pteridospermopsida

Classified under:

Nouns denoting plants

Hypernyms ("class Pteridospermopsida" is a kind of...):

class ((biology) a taxonomic group containing one or more orders)

Meronyms (members of "class Pteridospermopsida"):

Cycadofilicales; Lyginopteridales; order Cycadofilicales; order Lyginopteridales (fossil gymnospermous trees or climbing plants from the Devonian: seed ferns)

Holonyms ("class Pteridospermopsida" is a member of...):

class Gymnospermae; division Gymnospermophyta; Gymnospermae; Gymnospermophyta (plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina (class Gnetopsida) and Coniferophytina (class Coniferopsida); in some classifications the Coniferophytina are divided into three groups: Pinophytina (class Pinopsida) and Ginkgophytina (class Ginkgopsida) and Taxophytina (class Taxopsida))

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