似托第蕨
是根据实羽片建立的真蕨植物叶化石的一属，和紫萁科现生属托第蕨(Todea)十分相似，仅孢子囊略小。裸羽片枝脉蕨型，小羽片镰刀形，全缘或具齿，基部全部着生于羽轴上，有时略收缩，顶端多尖锐，叶脉羽状，中脉明显，侧脉分叉。实羽片与裸羽片形态相似或略退缩，孢子囊圆而小，顶端细胞增厚形成帽状环带，沿侧脉密布于叶之背面。晚三叠世至早白垩世，以晚三叠世至侏罗纪最盛，遍布全球。中国此类化石很多。
98
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Contributor
contributed at 2011-10-11
Classification(s)
●
Earth System(in Chinese) Paleontology
Detailed Description
| English |
|---|
| Name | Todites |
| Chinese |
|---|
| Name | 似托第蕨 |
| Description | 是根据实羽片建立的真蕨植物叶化石的一属，和紫萁科现生属托第蕨(Todea)十分相似，仅孢子囊略小。裸羽片枝脉蕨型，小羽片镰刀形，全缘或具齿，基部全部着生于羽轴上，有时略收缩，顶端多尖锐，叶脉羽状，中脉明显，侧脉分叉。实羽片与裸羽片形态相似或略退缩，孢子囊圆而小，顶端细胞增厚形成帽状环带，沿侧脉密布于叶之背面。晚三叠世至早白垩世，以晚三叠世至侏罗纪最盛，遍布全球。中国此类化石很多。 |
How to Cite
NNU_Group (2011). 似托第蕨, Concept & Semantic, OpenGMS,
https://geomodeling.njnu.edu.cn/repository/concept/71ede80b-fcc8-4a6c-a0ac-13d897cf9f3b
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