Pteridospermatophyta
- 种子蕨门（种子蕨是古代裸子植物，起源于晚泥盆纪，盛行于石炭纪至三叠纪，至侏罗纪衰退，白垩纪末期灭绝）
Pteridospermatophyta
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abstract:
The term Pteridospermatophyta (or "seed ferns") refers to several distinct groups of extinct seed-bearing plants (spermatophytes). The oldest fossil evidence of plants of this type is the genus Elkinsia of late Devonian age.
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