| Seed plants are also divided by gymnospermous plants and angiospermous plants. |
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| In contrast, the interval between c.916m and 885.9Om is totally dominated by gymnospermous saccate pollen, with very few fern spores. |
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| The late Triassic showed major radiation of plants, gymnospermous groups in particular, in both the Northern and Southern Hemispheres. |
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| So this is a time period where gymnospermous plants predominated, including cycadioids which look like modern cycads, and various groups of extinct conifers and seed ferns. |
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