Definition of pteridospermopsida Pteridospermopsida

We found 2 definitions of pteridospermopsida from 2 different sources.

What does pteridospermopsida mean?

Noun
pteridospermopsida - extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies
		class Pteridospermopsida
		class elegance in dress or behavior; "she has a lot of class"
		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)