RECONSTRUCTION OF PINNA OF PECOPTERIS LATIVENOSA HALLE BASED ON STATISTIC ANALYSIS
RECONSTRUCTION OF PINNA OF PECOPTERIS LATIVENOSA HALLE BASED ON STATISTIC ANALYSIS
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DOI：
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发表时间：
2008
影响因子：
7
通讯作者：
Z. Yi
中科院分区：
文献类型：
--
作者：
Z. Yi
Pecopteris lativenosa Halle是栉羊齿属中羽叶形态变化十分显著的一个种。通过对内蒙古乌达地区早二叠世太原组大量标本的观察和统计分析，验证了宽脉蕨Pecopteris lativenosa Halle的主要特征。本文对三羽状叶上的羽片进行了分类，并对它们在三羽状叶上的空间位置进行了评价。结果，实现了三羽状叶的重建。它适用于解释先前描述的该物种的标本。简要综述了植物化石形态重建的定性和定量方法。
Pecopteris lativenosa Halle is one of the pecopterid species with marked intraspecific variation of leaf morphology. Based on observation of numerous specimens collected from the Early Permian Taiyuan Formation in Wuda, Inner Mongolia, and with an application of statistic analysis, the major features of Pecopteris lativenosa Halle are tested and verified. Five types of pinnules, six types of ultimate pinnae and two types of penultimate pinnae are differentiated, and their spatial locations on a tripinnate leaf are evaluated. As a result, a reconstruction of a tripinnate leaf is realized. It is applicable to interpret previously described specimens of this species. Qualitative and quantitative methodology in morphological reconstruction of fossil plant is briefly reviewed.