摘要
笔石发现于辽宁辽阳兰家晚寒武世崮山组 Drepanura 带,他们为 Dendrograptus liaoyangensis sp. nov., Dendrograptus liaoyangensis latus subsp. nov., Callograptus lanjiaensis sp. nov., Callograptus sp. A, Callograptus sp. B.,这是我国已知最低层位的笔石.
A layer of graptolites was discovered from the Upper Cambrian Kushan Formation at Lanjia of Liaoyang, Liaoning by the writer in the summer of 1986. They contain 2 genera and 5 species (including 2 new species and 1 new subspecies), namely, Dendrograptus liaoyangensis sp. nov., Dendrograptus liaoyangensis latus subsp. nov., Callograptus lanjiaensis sp. nov., Callograptus sp. A and Callograptus sp. B., which are found to be associated with the trilobite Drepanura premeenili. This graptolite-bearing layer might represent the lowest one ever known in China, providing these new data of great significance and available for making researches on the origin, evolution and expansion of the graptolites.
出处
《古生物学报》
CAS
CSCD
北大核心
1992年第4期395-402,517-518,共8页
Acta Palaeontologica Sinica
关键词
树形笔石
上寒武统
崮山组
辽宁
dendroid, Upper Cambrian, Kushan Formation, Liaoning
