The carpel is homologous with the megasporophylls of certain spore-bearing vascular plants (pteridophytes) and the ovuliferous scales of gymnosperms.
心和能产生孢子的维管植物(羊齿类)还有具胚珠的裸子植物的孢子叶是同源的。
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But, ultimately, many of the specialized gymnosperm pollinators would go extinct, including the ancient lacewings around 100 million years ago, and that group of true flies and certain groups of scorpionflies about 94 million years ago.
但是,最终,许多专门的裸子物传者将会灭绝,包括大约 1 亿年前的古老草蛉,以及大约 9400 万年前的那群真蝇和某蝎子群。