کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4750535 1642532 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cupressus foliage shoots and associated seed cones from the Oligocene Ningming Formation of Guangxi, South China
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
Cupressus foliage shoots and associated seed cones from the Oligocene Ningming Formation of Guangxi, South China
چکیده انگلیسی

The present paper reports a new species of Cupressus based on compressed material from the Oligocene Ningming Formation of the Ningming County, Guangxi Zhuang Autonomous Region, South China. The foliage shoots described as Cupressus guangxiensis sp. nov. are almost identical with those of the extant species Cupressus funebris, which is considered primitive among the genus, in gross morphology as well as cuticular structure. Their foliage shoots are similarly flattened and alternately branched, bearing weakly dimorphic, amphistomatic scale leaves with serrate and scariose margin. Associated seed cones are also comparable to those of the same extant species in shape and size. The morphogenera and organ genera related to Cupressus-like fossils are briefly reviewed. Available fossil evidence appears to be in accordance with Farjon's inference that the evolutionary trend in the genus Cupressus leads from some species with dimorphic leaves and smaller cones as C. funebris to those with monomorphic leaves and larger cones. This is the first fossil record of Cupressus with well-preserved cuticle in Asia.


► Cupressus foliage and associated seed cones from the Oligocene of South China.
► First fossil record of Cupressus with well-preserved cuticle in Asia.
► Early representatives of Cupressus might have dimorphic leaves and smaller cones.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Review of Palaeobotany and Palynology - Volume 166, Issues 3–4, August 2011, Pages 325–334
نویسندگان
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