Pteridospermopsida definitions

Pteridospermopsida

[n] - extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies
Found on http://www.webdictionary.co.uk/definition.php?query=Pteridospermopsida

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Pteridospermopsida

class Pteridospermopsida noun extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies
Found on https://www.encyclo.co.uk/local/20974

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