A New Species of Cupressinocladus from the Lower Cretaceous of Guyang Basin, Inner Mongolia, China and Cluster Analysis
A New Species of Cupressinocladus from the Lower Cretaceous of Guyang Basin, Inner Mongolia, China and Cluster Analysis
复制标题
内蒙古固阳盆地下白垩统柏树一新种及聚类分析
DOI:
10.1111/1755-6724.13355
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发表时间:
2017-08
期刊:
影响因子:
--
通讯作者:
Bainian Sun
中科院分区:
文献类型:
--
作者:
Peihong Jin;Teng Mao;Junling Dong;Zixi Wang;Mingxuan Sun;Xiaohui Xu;Baoxia Du;Bainian Sun
Cupressinocladus Seward is a fossil genus of conifers and conifer fossils with reproductive organs are very rare. In general, it is difficult to understand the natural affinities with other conifers. In this paper, a new species, Cupressinocladus guyangensis P.H. Jin et B.N. Sun sp. nov., is reported based on branches with immature female cones from the Lower Cretaceous Guyang Formation of the Guyang Basin in Inner Mongolia, northern China. The foliage shoots are decussate. Leaves are decussate, imbricate, scale‐like, weakly dimorphic, and bear longitudinal glands on the abaxial view. Stomata complexes are haplocheilic, monocyclic, irregularly arranged, and spread along the leaf margin. Immature female cones are subglobose with 6–8 cone scales, and three subglobose ovules arranged in a row at the base of the cone scales. Moreover, we performed cluster analysis using a statistics and machine learning toolbox for 23 fossils and extant species based on 16 morphological characters. The result implies that the new species bears a close resemblance to the extant Cupressus funebris Endl. and might have nearest systematic affinities to it.
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影响因子:
3.7
作者:
Wu JY;Ding ST;Li QJ;Zhao ZR;Sun BN
通讯作者:
Sun BN
DOI:
10.1111/1755-6724.12727
发表时间:
2016-06
期刊:
Acta Geologica Sinica (English Edition)
影响因子:
--
作者:
MA Fujun;YAN Defei;LIN Zhicheng;SUN Bainian
通讯作者:
SUN Bainian
影响因子:
2.4
作者:
J. Lorch
通讯作者:
J. Lorch
影响因子:
2.1
作者:
Xiaohui Xu;Bainian Sun;De-Fei Yan;Jin Wang;Chong Dong
通讯作者:
Xiaohui Xu;Bainian Sun;De-Fei Yan;Jin Wang;Chong Dong
DOI:
10.1073/pnas.1114319109
发表时间:
2012-05-15
影响因子:
11.1
作者:
Mao, Kangshan;Milne, Richard I.;Renner, Susanne S.
通讯作者:
Renner, Susanne S.