pteridospermopsida การใช้

• The Early Jurassic ( Hettangian-Sinemurian ) flora is represented by Bryophytes ( Hepaticae ), Pteridophytes ( Filicopsida, Sphenopsida, Lycopsida ) and Gymnosperms ( Pteridospermopsida, Ginkgopsida, Cycadopsida, Coniferopsida ), with numerous coal generators ( Givulescu, 1998, Popa and Van Konijnenburg-Van Cittert, 2005 ).