PTERIDOSPERMS
Definition
PTERIDOSPERMS is the plural of PTERIDOSPERM.
noun PTERIDOSPERM: an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae).
PTERIDOSPERMS is the plural of PTERIDOSPERM.
noun PTERIDOSPERM: an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae).