CLASS PTERIDOSPERMOPSIDA

 Dictionary entry overview: What does class Pteridospermopsida mean? 

• CLASS PTERIDOSPERMOPSIDA (noun)
  The noun CLASS PTERIDOSPERMOPSIDA has 1 sense:

1. extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies

  Familiarity information: CLASS PTERIDOSPERMOPSIDA used as a noun is very rare.

 Dictionary entry details 

• CLASS PTERIDOSPERMOPSIDA (noun)

Meaning:

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

Classified under:

Nouns denoting plants

Synonyms:

class Pteridospermopsida; Pteridospermopsida

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))