摘要
对发现于内蒙古土默特旗上石炭统一下二叠统的几种科达穗化石及种子类化石进行了研究,经鉴定确认其中有2个为新种,分别定名为长爪科达穗Cordaitanthuslongibracteatussp.nov.和多泡石籽Car polithusmultibullatussp.nov..这些珍贵的繁殖器官的发现,表明晚石炭世一早二叠世种子演化已达相当水平,对于研究科达类的演化过程具有重要的研究价值.
After appraisal some fossil of seeds belong to Cordaitopsida in the Upper Carboniferous-low Permian sediment of inner Mongolia,two new species were fond.One of species is the Cordaitanthus longibracteatus sp.nov.,another is the Carpolithus multibullatus sp.nov..Discovery of these reproductive organ fossils indicated the development level of Cordaitopsida had reach a high level in later Carboniferous-early Pemian period.These fossils give us some valuble materials for advance the reserch work for evolution of Cordaitopsida reproductive organs.
出处
《河北师范大学学报（自然科学版）》
CAS
2004年第2期187-192,共6页
Journal of Hebei Normal University：Natural Science
基金
国家自然科学基金资助项目(29970054)
中国科学院资源环境局重点基金资助项目(KZ952 S1 128)
