亚拉蕨学名Yarravia)是一灭绝维管植物,生存于早泥盆世[2]化石主要被发现于澳大利亚维多利亚州[1],标本仅由一些不完整的无段组成,其中有些带有形成孢子的器官或孢子囊[1]

亚拉蕨属
化石时期:布拉格期
科学分类 编辑
界: 植物界 Plantae
演化支 维管植物 Tracheophyta
属: 亚拉蕨属 Yarravia
W. H. Lang & Cookson (1935)[1]

Yarravia oblonga
Yarravia subsphaerica
Yarravia minor
Yarravia gorelovii

特征

编辑

亚拉蕨的茎直径约2至2.5毫米。最长的部分长达7.5公分。目前未发现有分枝的茎段,茎的内部结构也没有被保留下来。孢子囊着生于茎的末梢,由于所发现的样本是被压平的,因此其原始的外形并不清楚。但多达五至六个直立的细长孢子囊似乎为径向排列于由茎加宽形成的基部上。[1]

物种

编辑
  • Yarravia oblonga W.H.Lang & Cookson (1935)[1]
  • Yarravia subsphaerica .H.Lang & Cookson (1935)[1]
  • Yarravia minor P. Danzé-Corsin (1956)[3]
  • Yarravia gorelovii Ananiev (1960)[4]

参考文献

编辑
  1. ^ 1.0 1.1 1.2 1.3 1.4 1.5 Lang, W.H. & Cookson, I.C., On a Flora, Including Vascular Land Plants, Associated with Monograptus, in Rocks of Silurian Age, from Victoria, Australia, Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 1935, 224 (517): 421–449, JSTOR 92292, doi:10.1098/rstb.1935.0004 
  2. ^ Tims, J.D. & Chambers, T.C., Rhyniophytina and Trimerophytina from the early land flora of Victoria, Australia (PDF), Palaeontology, 1984, 27: 265–279 [2011-12-20], (原始内容 (PDF)存档于2012-04-25) 
  3. ^ Edwards, Dianne, Danziella artesiana, a new name for Zosterophyllum artesianum from the Lower Devonian of Artois, northern France, Review of Palaeobotany and Palynology, 2006, 142 (3-4): 93–101, doi:10.1016/j.revpalbo.2006.04.008 
  4. ^ Hao, S.-G. & Gensel, P.G., A New Genus and Species, Celatheca beckii, from the Siegenian (Early Devonian) of Southeastern Yunnan, China, International Journal of Plant Sciences, 1995, 156 (6): 896–909, doi:10.1086/297312