| Zosterophyllum Temporal range:
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| Reconstruction of Zosterophyllum sp. at MUSE - Science Museum in Trento | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Lycophytes |
| Plesion: | †Zosterophylls |
| Genus: | †Zosterophyllum Penh. (1892) |
| Type species | |
| Zosterophyllum myretonianum Penhallow (1892)
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| Species | |
Zosterophyllum was a genus of Silurian-Devonian vascular land plants with naked branching axes on which usually kidney-shaped sporangia were arranged in lateral positions. It is the type genus for the group known as zosterophylls, thought to be part of the lineage from which modern lycophytes evolved. More than 20 species have been described.