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  1. ucmp.berkeley.edu › seedplants › seedplantsfrFossil Record of the Seed Plants - University of California ...

    Life on land as we know it is shaped largely by the activities of seed plants. This large and important group appeared early in the evolution of vascular plants, and throughout the Late Paleozoic shared dominance of the land flora with ferns, lycophytes, and sphenopsids.

  2. en.wikipedia.org › wiki › PteridospermatophytaPteridospermatophyta - Wikipedia

    The concept of pteridosperms goes back to the late 19th century when palaeobotanists came to realise that many Carboniferous fossils resembling fern fronds had anatomical features more reminiscent of the modern-day seed plants, the cycads.

  3. naturecollective.org › details › california-polypodyCalifornia Polypody | Nature Collective

    California polypody (Polypodium californicum) is one of the few ferns found in the Reserve, and the most common one. It is native to moist areas throughout California and northern Baja. California polypody makes its appearance after the first winter rains and disappears during the dry summer months.

  4. animals.sandiegozoo.org › plants › conifersConifer | San Diego Zoo Animals & Plants

    It wasn’t until 1946 that the connection was discovered, and in 1948, Harvard University funded an expedition to see the living tree. Seeds were collected, and seedlings and seeds were then distributed to various universities and arboretums, bringing back this ancient plant.

  5. pacifichorticulture.org › california-native-fernsPacific Horticulture | California Native Ferns

    Earl Nickel. Ferns are among Earth’s oldest plants, tracing back before the time of the dinosaurs (300 million ye... READ THE WHOLE STORY. Join now to access new headline articles, archives back to 1977, and so much more. Enjoy this article for FREE: Articles: Calochortophilia: A Californian’s Love Affair with a Genus by Katherine Renz.

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  6. www.britannica.com › plant › seed-fernSeed fern | Pteridosperms, Lyginopteridales, Cycadales

    seed fern, loose confederation of seed plants from the Carboniferous and Permian periods (about 360 to 250 million years ago). Some, such as Medullosa, grew as upright, unbranched woody trunks topped with a crown of large fernlike fronds; others, such as Callistophyton, were woody vines.

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  8. www.encyclopedia.com › plants › plantsSeed Ferns | Encyclopedia.com

    May 8, 2018 · Their foliage was fern-like in appearance, but the fertile leaves bore seeds and pollen-producing organs. The first plant to be identified (in 1903) as a seed plant rather than a true fern was Lyginopteridales oldhamia.

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