sphenopsid

n.木贼纲植物

蕨类植物；

名词；

1. Sphenopsids are an ancient group of plants that thrived during the Carboniferous period.
蕨类植物是一种远古的植物群，在石炭纪时期繁盛生长。
2. Fossilized sphenopsid stems have been found in many coal deposits around the world.
化石化的蕨类植物茎在世界各地的煤矿床中被发现。