| 释义 |
eo·sper·ma·top·ter·is
\ˌē(ˌ)ōˌspərməˈtäptərə̇s\ noun
Usage: capitalized
Etymology: New Latin, from eo- + spermat- + -pteris
: 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 |