文中描记3个多节类三叶虫新种:Hardyoides damaensis sp.nov.,Meringaspis damaensis sp.nov.,and Rhyssometopus (Rostrifinis)nitidus sp.nov.,均产自湘西凤凰花桥组中部.同时描记首次在江南斜坡带中发现的Erixanium一属的保留命名种Erixanium cf.E.sentum.Erixanium是全球性分布的多节类三叶虫,其发现对湘西地区生物地层的精确划分和全球对比具有重要意义.
New polymerid trilobites are described from the middle part of the Huaqiao Formation in Fenghuang area, western Hunan, an area known as one of the most richly fossiliferous areas in China for Middle and Late Cambrian trilobite faunas. The trilobite faunas of this area were recorded previously by some authors. The new material was collected during recent investigations on the trilobite biostratigraphy of Middle and Upper Cambrian of the area. Three new and a single open nomenclature species are described here, all from the Dama section in Fenghuang County. They include Hardyaides damaensis sp. nov. , Meringaspis damaensis sp. nov. , Rhyssometopus (Rostrifinis) nitidus sp. nov. and Erixanium cf. Erixanium sentum Opik, 1963 . This is the first record of Erixanium from eastern Guizhou and western Hunan. The significance of the new taxa in biostratigraphical correlation of Cambrian within the Australo-Asia Province is discussed.