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Hamatophyton

Hamatophyton
Temporal range: Famennian–Tournaisian
Scientific classification
Kingdom: Plantae
Division: Pteridophyta
Class: Equisetopsida
Order: Sphenophyllales
Genus: Hamatophyton
Species

Hamatophyton verticillatum


Hamatophyton verticillatum

Hamatophyton is a genus of the extinct Sphenophyllales horsetails. Unique to this genus among other Sphenophyllales is its lack of secondary xylem around the tips of the primary xylem arms.


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Wikipedia

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