湘西凤凰大马地区中、晚寒武世三叶虫

Middle and late Cambrian trilobites from Fenghuang Dama area,western Hunan

我国湘西大马—亥冲口—峨梨塘地区有大量三叶虫化石产出,它是我国南方已知含丰富化石产地之一.此地同样也是我国寒武系地层出露最完整的地区之一.特别是黔东和湘西交界处,寒武系岩石出露相当好,未变形,易辩认.部分产自亥冲口剖面的多节类三叶虫由现作者近年出版在别处,本文重点介绍几个近年新发现产自大马剖面的三叶虫.

There are a number of trilobite fossils in Dama- Haichongkou- Elitang area western Hunan, which is known as one of the most richly fossiliferous area in south China for Middle and Irate Cambrian trilobite faunas. It holds also one of the most complete successions of the Cambrian strata known in China. Particularly in the border area of eastern Guizhou and western Hunan, Cambrian rocks are relatively well exposed, relatively undisturbed by tectonism, and easily accessible. A part of polymerid trilobites from the Haichongkou section have been published elsewhere by the present author in recent years. Few trilobite fossils from Dama section that discovered by author in last year are described in the paper.