单词 | Eospermatopteris |
释义 | Eospermatopterisnoun Eo·sper·ma·top·ter·is ˌē(ˌ)ōˌspərməˈtäptərə̇s : a genus of fossil seed ferns of the Devonian Lavive structure and terminal sporangia similar to those of Psilophyton but lacking the leafiness of the Carboniferous and later ferns |
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