- Zosterophyllopsida
Taxobox
name = Zosterophyllopsida
fossil_range = UpperSilurian - LowerCarboniferous
image_width = 240px
image_caption = "Sawdonia ornata" with ground creeping roots (A); lateral reniform sporangia (B)
regnum =Plant ae
divisio =Lycopodiophyta
classis = Zosterophyllopsida †
subdivision_ranks = Orders
subdivision =
*Sawdoniales
*Zosterophyllales The Zosterophyllopsida are a group of
fossil lycophytes known primarily from theSilurian andDevonian . They are typified by the genus "Zosterophyllum" which had its sporangia distributed in groups along the sides of the stem tips, rather than in a terminal position.Stewart, WN & GW Rothwell (1993) Paleobotany and the evolution of plants, 2nd ed. Cambridge University Press, New York, USA]References
External links
* [http://www.palaeos.com/Plants/Lycophytes/Zosterophyllopsida.html Palaeos Plants : Lycopsida : Zosterophyllopsida]
*cite web|url=http://www.ucmp.berkeley.edu/plants/lycophyta/zostero.html|title=Introduction to the Zosterophylls
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