একটি বিলুপ্ত বীজ উত্পাদক অর্ডার Cycadofilicales এর fernlike উদ্ভিদ (অথবা গ্রুপ Pteridospermae

pteridosperms's Usage Examples:

archetypal pteridosperms: They were the first plant fossils to be described as pteridosperms and, thus, the group on which the concept of pteridosperms was first.

They were reproductively more sophisticated than most other Palaeozoic pteridosperms, some of which they seem to have out-competed and replaced in the "coal.

The Callistophytaceae was a family of seed ferns (pteridosperms) from the Carboniferous and Permian periods.

Conifers reoccurred in the Early Anisian, followed by the cycads and pteridosperms during the Late Anisian.

The Emplectopteridaceae were pteridosperms known mainly from Permian floras of the Cathaysian Realm.

Jurassic of Chubut, Argentina, among other plants as ferns, conifers and pteridosperms.

somewhat fern-like vegetative morphology (the so-called "seed ferns" or pteridosperms).

Triassic-Jurassic pteridosperms of Australasia: speciation, diversity and decline.

Beck described the genus as possibly a precursor to the seed ferns or pteridosperms.

during the Middle Triassic when plant groups like horsetails, ferns, pteridosperms, cycads, ginkgos and conifers resurfaced and diversified quickly.

cold-adapted pteridosperms (early seed plants) of Gondwana were blocked from spreading throughout Pangaea by the warming climate, and northern pteridosperms ended.

pteridosperms's Meaning':

an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae