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The Triassic world-wide: Australia |
| The mountains of eastern Australia received sufficient rainfalls around the Middle/Upper Triassic boundary to allow increased plant growth. Floods during heavy rainfalls transported plant fragments into intramontane basins. Some of these basins accumulated enough plant material to form large coal deposits that are now of a high economic importance. Most common are seed ferns of the genus Dicroidium and Xylopteris, the successors of the fastly declining Glossopteris flora on the southern hemisphere. | |
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Seed fern
Dicroidium sp. Middle/Upper Triassic, Ipswich Coal Measures (Australia) |
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Seed ferns Dicroidium odontopteroides (MORRIS), Xylopteris elongata (CARRUTHERS) Middle/Upper Triassic, Ipswich Coal Measures (Australia) |
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Seed fern Dicroidium odontopteroides (MORRIS) Middle/Upper Triassic, Ipswich Coal Measures (Australia) |
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| Scale length, if not otherwise stated: 1 cm. | |