摘要
铁法植物群产于辽宁北部铁法盆地下白垩统小明安碑组含煤地层中。该植物群由45属79种组成。真蕨是其中最繁盛的类别,计15属29种,占植物群种数的36.7％,并且有较高的分异度,覆盖了9个科别,在我国同期植物群中很有特色。本文在形态对比和原位孢子囊、孢子研究的基础上建立了Coniopteris longpinnate sp.nov.,Dryopterites triangularis sp.nov.,Asplenivm tiefanvm sp.nov.3个新种,还对保存了生殖羽片的其它8种真蕨作了原位孢子分析,大大提高了这些属种的研究程度。
The Tiefa flora ,contained in coal -bearing strata of the Xiaoming' anbei Formation (Early Cretaceous in age ), consists of 79 species belonging to 45 genera . Filicopsida , the largest group of the flora , is composed of 29 species including 9 families , which amount to 36.7% of the flora . Dicksoniaceae of 8 species is the most dominant family . Among all members of Filicopsida , Acanthopteris gothani Sze is the most abundant species . The paper also s! udies the sporangia and spores in situ of 11 species including the new species .
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1992年第1期7-14,T003,共9页
Earth Science-Journal of China University of Geosciences
关键词
真蕨植物
原位孢子
早白垩世
辽宁
Early Cretaceous , Filicopsida , spore in situ , Tiefa Basin , Liaoning Prov- ince.
