Lepidodendron

Lycophyte

Upper Carboniferous

Section of a branch showing the characteristic pattern of Lepidodendron leaf bases. Leaves of Lepidodendron were linear with a swollen attachment area. Leaf attachment sites leave a distinctive, rhombic impression (leaf cushions) on the stem surface. The close spacing of these markings shows that the foliage was dense. The leaf size varied between species and leaves were mainly restricted to smaller branches. The leaf cushions shown are approximately 3 cm in length.

Mariopteris

Seed fern

Upper Carboniferous

Frond of the seeded fern Mariopteris. Fronds of Mariopteris were generally small (50 cm in length) and some specimens had thread-like tendrils at the leaf tips suggesting that this fern had a vine-like, scrambling habit.

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Responses

  • leah
    What age were amphibians lepidodendron?
    8 years ago

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