Pteridospermopsida

Từ điển WordNet v3.1 - WordNet Dictionary

noun

extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies
• Syn:
class Pteridospermopsida
• Hypernyms:
class
• Member Holonyms:
Gymnospermae, class Gymnospermae, Gymnospermophyta, division Gymnospermophyta
• Member Meronyms:
Cycadofilicales, order Cycadofilicales, Lyginopteridales, order Lyginopteridales