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seed fern

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seed fern
n
(Life Sciences & Allied Applications / Plants) another name for pteridosperm
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.seed fern - an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)seed fern - an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
pteridosperm
gymnosperm - plants of the class Gymnospermae having seeds not enclosed in an ovary
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These gradually took over from seed ferns, cycads and gingkoes.
Forget the meteorites - it was insects that did for the dinosaurs by guardian.co.uk / guardian.co.uk
The discovery of fossilized stumps of Glossopteris, a seed fern now extinct, supports the view that during the Permian period - years 250-280,000,000 ago - Antarctica had a climate much warmer than it does today, according to Edith Taylor, a research scientist with Ohio State University's Byrd Polar Research Center.
Antarctica had a warmer past by USA Today (Magazine)
 
 
 
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