# Haplostigma

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***Haplostigma*** is a genus of arborescent [lycopodiopsid](/source/Lycopodiopsid), found only in the early part of the Middle [Devonian](/source/Devonian).[1]

## References

1. Woolfe, K.J. (1993). "Devonian depositional environments in the Darwin Mountains: Marine or non-marine?". *Antarctic Science*. **5** (2): 211–220. [Bibcode:1993AntSc...5..211W](https://ui.adsabs.harvard.edu/abs/1993AntSc...5..211W). [doi:10.1017/S0954102093000276](https://doi.org/10.1017/S0954102093000276). [S2CID 129509428](https://api.semanticscholar.org/CorpusID:129509428)

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Adapted from the Wikipedia article [Haplostigma](https://en.wikipedia.org/wiki/Haplostigma) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Haplostigma?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.