A new Oligocene species of Cunninghamia R. Brown ex Richard et A. Richard (Cupressaceae) from the Maoming Basin, South China
A new Oligocene species of Cunninghamia R. Brown ex Richard et A. Richard (Cupressaceae) from the Maoming Basin, South China
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华南茂名盆地渐新世Cunninghamia R. Brown ex Richard et A. Richard（柏科）新种
DOI：
10.1016/j.revpalbo.2018.09.003
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发表时间：
2018-11-01
影响因子：
1.9
通讯作者：
Jin, Jianhua
中科院分区：
文献类型：
--
作者：
Kodrul, Tatiana;Gordenko, Natalia;Jin, Jianhua
标题杉木属一新种。根据对广东茂名盆地下渐新统上村组的叶枝和一片孤立的叶的压缩/压痕，报道了该化石。新种杉木（Cunninghamia shangcunica sp. nov.）具有螺旋状排列、放射状展开的多形叶。大多数白垩纪类的叶序特征与该新种相似，可以认为是一种原始特征。在中新世的物种，顶生枝与双边（梳状）安排叶占主导地位。新种与现存种小西氏刺蛾C. konishii的茎叶形态相似，与C.在表皮特征上与披针叶植物相似。新的渐新世物种增加了已知的杉木属在其避难所区域的多样性，并有助于更好地了解这种针叶树的具体变化和生态。记录并描绘了该新种叶上真菌的多样性种群。(C)2018 Elsevier B. V.版权所有。
A new species of the genus Cunninghamia (Cupressaceae s.l.) is reported from the Lower Oligocene Shangcun Formation of the Maoming Basin, Guangdong Province, South China based on compressions/impressions of leafy shoots and an isolated leaf. Cunninghamia shangcunica sp. nov. possesses helically arranged and radially spread polymorphic leaves. Most Cretaceous cunninghamioid species exhibits a similar phyllotaxis with this new species, and it can be regarded as a primitive character. In the Miocene species, terminal shoots with a bilateral (pectinate) arrangement of leaves predominated. The new species is similar to the extant species C konishii in shoot and leaf morphology, and to C. lanceolata in the characters of the epidermis. The new Oligocene species increases the known diversity of the genus Cunninghamia in its refugial region and contributes to a greater understanding of the specific variability and ecology of this conifer. A diverse population of epiphyllous fungi on the leaves of the new species are recorded and figured. (C) 2018 Elsevier B.V. All rights reserved.