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Pteridosperm

Pteridosperms, also known as seed ferns, are a polyphyletic grouping of extinct seed-producing plants. The earliest fossil evidence for plants of this type are the lyginopterids of late Devonian age. They flourished particularly during the Carboniferous and Permian periods. Pteridosperms declined during the Mesozoic Era and had mostly disappeared by the…

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Pteridosperm

Nodes92
Edges91
Triples39
Avg. degree1.98
Density0.021739
Components1

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Pteridosperm

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related to history · 36
Pteridosperm → Age, Aneimites, British, Callistophytales, Carboniferous, Carboniferous Period, Caytoniales, Corystospermales, Cycadofilices, Dicksonites, Dukinfield Henry Scott, English-speaking, Ferns, Frank Oliver, German, Henry Potonié, In, Initially, Lagenostoma, Lyginopteridales

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Important terminology

seed plants family emend pteridosperms ferns anderson fossil němejc long 1975 carboniferous palaeobotanists also 2007 archangelsky cycads groups scott order

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
the Glossopteridalesinstance ofSome palaeobotanists also included seed plant groups with entire leaves0.80text
Gigantopteridalesinstance ofSome palaeobotanists also included seed plant groups with entire leaves0.80text
which was stretching the conceptinstance ofSome palaeobotanists also included seed plant groups with entire leaves0.80text
Pteridospermrelated to historyThe0.60section
Pteridospermrelated to historyCarboniferous0.60section
Pteridospermrelated to historyIn0.60section
Pteridospermrelated to historyGerman0.60section
Pteridospermrelated to historyHenry Potonié0.60section
Pteridospermrelated to historyCycadofilices0.60section
Pteridospermrelated to historyShortly0.60section
Pteridospermrelated to historyBritish0.60section
Pteridospermrelated to historyFrank Oliver0.60section

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