Eospermatopteris
noun
Eo·sper·ma·top·ter·is
| \ ˌē(ˌ)ōˌspərməˈtäptərə̇s\
Definition of Eospermatopteris
: 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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