# Oricilla

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***Oricilla*** was a genus of [Early Devonian](/source/Early_Devonian) land plant with branching axes.[1] Fossils have been found from the [Pragian](/source/Pragian) to the [Emsian](/source/Emsian) ().[2]

A cladogram published in 2004 by Crane et al. places *Oricilla* in the core of a [paraphyletic](/source/Paraphyletic) [stem group](/source/Stem_group) of broadly defined "[zosterophylls](/source/Zosterophyll)", basal to the [lycopsids](/source/Lycopodiopsida) (living and extinct clubmosses and relatives).[3]

Hao and Xue in 2013 used the absence of terminal [sporangia](/source/Sporangium) to place the genus in the [paraphyletic](/source/Paraphyly) order [Gosslingiales](/source/Gosslingiales), a group of zosterophylls considered to have indeterminate growth, with fertile branches generally showing [circinate vernation](/source/Circinate_vernation) (initially curled up).[4] Kenrick and Crane in 1997 also placed the genus in the family [Gosslingiaceae](/source/Gosslingiaceae), but they place this family in the order [Sawdoniales](/source/Sawdoniales).[5]

## References

1. Boyce, C.K. (2008). "How green was *Cooksonia*? The importance of size in understanding the early evolution of physiology in the vascular plant lineage". *Paleobiology*. **34** (2): 179–194. [doi:10.1666/0094-8373(2008)034\[0179:HGWCTI](https://doi.org/10.1666/0094-8373(2008)034%5B0179:HGWCTI%5D2.0.CO;2)2.0.CO;2]. [ISSN 0094-8373](https://www.worldcat.org/issn/0094-8373)

1. Hao & Xue (2013), p. 329.

1. Crane, P.R.; Herendeen, P.; Friis, E.M. (2004). "Fossils and plant phylogeny". *American Journal of Botany*. **91** (10): 1683–99. [doi:10.3732/ajb.91.10.1683](https://doi.org/10.3732/ajb.91.10.1683). [PMID 21652317](https://pubmed.ncbi.nlm.nih.gov/21652317)

1. Hao & Xue (2013), pp. 52–54.

1. Kenrick, Paul & Crane, Peter R. (1997). *The Origin and Early Diversification of Land Plants: A Cladistic Study*. Washington, D.C.: Smithsonian Institution Press. p. 172. ISBN 978-1-56098-730-7.

## Bibliography

- Hao, Shougang & Xue, Jinzhuang (2013). [*The early Devonian Posongchong flora of Yunnan: a contribution to an understanding of the evolution and early diversification of vascular plants*](https://www.researchgate.net/publication/269875285). Beijing: Science Press. ISBN 978-7-03-036616-0. Retrieved 2019-10-25.

## External links

- [Cladogram](https://archive.today/20121204162818/http://www.amjbot.org/content/vol91/issue10/images/large/abot-91-10-04-f01.jpeg) from Crane, Herendeen & Friis 2004

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