seed fern การใช้

• The "'Glossopteridaceae "'are an extinct family of plants belonging to Pteridospermatophyta, or seed ferns.
• The southern continent saw extensive seed fern forests of the " Glossopteris " flora.
• The "'Caytoniaceae "'are an extinct family of plants belonging to Pteridospermatophyta, or seed ferns.
• The "'Peltaspermales "'are an extinct order of plants belonging to Pteridospermatophyta, or seed ferns.
• The "'Calamopityales "'are an extinct order of plants belonging to Pteridospermatophyta, or seed ferns.
• The "'Calamopityaceae "'are an extinct family of plants belonging to Pteridospermatophyta, or seed ferns.
• The "'Alethopteridaceae "'are a family of extinct plants belonging to Pteridospermatophyta, or seed ferns.
• The rest of the flora included scouring rushes, " Sphenophyllum ", ferns, and seed ferns.
• Other Carboniferous plant fossils in West Virginia include the leaves of seed ferns " Alethopteris ".
• It is believed to be most closely related to the giant seed ferns which date back to the Jurassic period.
• They are regarded as seed ferns because they are seed-bearing plants with fern-like leaves . that hypothesis was later disproven.
• "' Glossopteridales "'is an extinct order of plants belonging to Pteridospermatophyta, or seed ferns, also known as Arberiales and Ottokariales.
• Her most famous diorama recreated the living fossil seed fern forest from the Devonian period in what is now Gilboa, New York.
• During Stopes's time at Manchester, she studied coal and coal balls and researched the collection of Glossopteris ( Permian seed ferns ).
• The scientists, who describe their findings in the current issue of the journal Nature, studied fossil specimens of the plant, Glossopteris, a seed fern.
• In 1935, she published a paper on petrified pteridosperms ( seed ferns ) using the revolutionary cellulose peel techniques developed by Walton in 1928.
• Widespread coal swamp deposits across North America and Europe during the Carboniferous Period contain a wealth of fossils containing seed ferns, and countless smaller, herbaceous plants.
• While it is difficult to track the early evolution of seeds, the lineage of the seed ferns may be traced from the simple trimerophytes through homosporous Aneurophytes.
• The order to which it belongs, Ginkgoales, first appeared in the Permian, 270 million years ago, possibly derived from " seed ferns " of the order Peltaspermales.
• By the Triassic period, seed ferns had declined in ecological importance, and representatives of modern gymnosperm groups were abundant and dominant through the end of the Cretaceous, when angiosperms radiated.