Biology:Sciadophyton
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Short description: Extinct genus of Devonian plants
| Sciadophyton | |
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| Sciadophyton fossil on display at the Museum of Man and Nature | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Subdivision: | †Rhyniophytina |
| Class: | †Rhyniopsida |
| Order: | †Rhyniales |
| Family: | †Rhyniaceae |
| Genus: | †Sciadophyton Steinrnann 1930 |
Sciadophyton is a morphotaxon of lower Devonian plants known only from compression fossils.[1][2] It is interpreted as the monoicous gametophyte of a vascular land plant, because its vascularised branches end in a cup-shaped structure bearing gametangia, both antheridia and archegonia,[3] but little structural information is preserved at the cellular level. It formed rosettes of stems, which may have radiated from a basal gametophytic corm-like thallus or from a central 'stem' or even from a root system, although there is not enough evidence to discriminate between these possibilities.[2]
References
- ↑ Remy, W.; Remy, R.; Hass, H.; Schultke, S.; Franzmeyer, F. (1980). "Sciadophyton Steinmann - ein Gametophyt aus dem Siegen." (in German). Argumenta Palaeobotanica 6: 37–72.
- ↑ 2.0 2.1 Taylor, T. N.; Kerp, H.; Hass, H. (April 2005). "Life history biology of early land plants: deciphering the gametophyte phase". Proceedings of the National Academy of Sciences of the United States of America 102 (16): 5892–7. doi:10.1073/pnas.0501985102. ISSN 0027-8424. PMID 15809414.
- ↑ Kenrick, P.; Crane, P. R. (1997). The origin and early diversification of land plants: A cladistic study.. Washington, D. C.: Smithsonian Institution Press.
Wikidata ☰ Q3952284 entry
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