Illustration from 1896 depicting the primary plants present during the formation of the Keuper layer of rock strata beneath the earth's surface. The Keuper is one of three layers that makes up the Triassic period. Plants shown in this image include; conif

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Illustration from 1896 depicting the primary plants present during the formation of the Keuper layer of rock strata beneath the earth's surface. The Keuper is one of three layers that makes up the Triassic period. Plants shown in this image include; conifers (voltzien), calamites (Equisetum arenaceum, Meriani and Pterophyllum jaegeri), and ferns (Pecopteris, Clathropteris, Taeniopteris marantacea).

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Size: 2550px × 4022px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No

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