The fossil plant Elkinsia polymorpha, a "seed fern" from the Devonian period approximately 400 million years ago, is considered the earliest known seed plant.

Authors

• Person: Not available Organization: LibreTexts
  5.9.1: Kingdom Plantae - Evolution and Phylogeny

Sources

• 5.9.1: Kingdom Plantae - Evolution and Phylogeny bio.libretexts.org LibreTexts via serper

Referenced by nodes (1)

• seed plants concept