摘要
Noeggerathiales are an extinct group of sporebearing plants of uncertain systematic position that are known from Carboniferous and Permian age Euramerican and Cathaysian floras that occurred in present-day Europe,North America,and East Asia.The order Noeggerathiales includes over 50 species of more than 20 fossil genera,but their paleoecology is not well understood yet.Previously this group had been found only in extrabasinal floras or those inhabiting clastic wetlands.Noeggerathiales have never been recorded in coal ball floras.Thus,it is up to now uncertain whether this group has contributed to the formation of coal.Recent investigations of an Early Permian peat-forming flora of the Taiyuan Formation near Wuda,Inner Mongolia,which was preserved in a volcanic ash fall has provided evidence that noeggerathialean plants not only existed in the peat-forming vegetation but could even be the dominant group in some areas of the coal swamp.The Noeggerathiales in this particular peat-forming forest include Tingia unita,Paratingia wudensis,and a new species of Paratingia.Exceptionally well-preserved specimens indicate that these noeggerathialean plants are small trees with a canopy of compound leaves and strobili near the top of an unbranched(monocaulous)stem.
Noeggerathiales are an extinct group of sporebearing plants of uncertain systematic position that are known from Carboniferous and Permian age Euramerican and Cathaysian floras that occurred in presentday Europe, North America, and East Asia. The order Noeggerathiales includes over 50 species of more than 20 fossil genera, but their paleoecology is not well understood yet. Previously this group had been found only in extrabasinal floras or those inhabiting clastic wetlands. Noeggerathiales have never been recorded in coal ball floras. Thus, it is up to now uncertain whether this group has contributed to the formation of coal. Recent investigations of an Early Permian peatforming flora of the Taiyuan Formation near Wuda, Inner Mongolia, which was preserved in a volcanic ash fall has provided evidence that noeggerathialean plants not only existed in the peatforming vegetation but could even be the dominant group in some areas of the coal swamp. The Noeggerathiales in this particular peatforming forest include Tingia unita, Paratingia wudensis, and a new species of Paratingia. Exceptionally well-preserved specimens indicate that these noeggerathialean plants are small trees with a canopy of compound leaves and strobili near the top of an unbranched （monocaulous） stem.
基金
supported by the Chinese Academy of Science Project (KZCX2-EW-120)
the National Basic Research Program of China (2012CB821901)
the National Natural Science Foundation of China (41072010,41172006,41372011)
a grant from the University Research Foundation of the University of Pennsylvania
