ONLINE IMAGE COLLECTION

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Image Title: Sphenophyllum stem x.s.
License Details: BSA - Terms for Image Use
Copyright held by: Judy Jernstedt, BSA
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About the Image

Sphenophyllum stem x.s. – from a fossil peel (of Carboniferous age); note triarch arrangement of primary xylem, also secondary xylem, crushed secondary phloem and periderm

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