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牙形刺P.eopennatus带的确立和P.celloni带、P.amorphognathoides带的细分,使华南Llandovery统的划分和对比发生了变化,以往归入P.celloni带的地层,极大多数都要归属到P.eopennatus带,层位变低。依据牙形刺生物地层的分析,溶溪组(下红层)的时代可能为埃隆期晚期,而不是特列奇期的早期;廻星哨组(上红层)的顶底界线都是穿时的,总的时限为P.eopennatus带上部到P.celloni带,也可上延到P.amorphognathoides带,但无文洛克世地层的证据。关底组和车家坝组属第三套红层,主要见于O.snajdri带至O.crispa带的下部,其时代为罗德洛世卢德福特期的晚期。扬子地台无文洛克世和罗德洛世高斯特期的沉积记录。
The establishment of the P.eopennatus band and the subdivision of the P. celloni belt and the P. amorphognathoides belt have led to a change in the division and contrast of the Llandovery system in the South China, Belonging to the P.eopennatus zone, the horizon becomes lower. According to the analysis of the conodont biostratigraphy, the age of the Rongxi Formation (the lower crust) may be the late Elon period, not the early period of the Terechicai period. The top and bottom boundaries of the crust group (upper crust) are both When worn, the total duration is the upper part of the P. epennnatus to the P. celloni belt, which may also extend up to the P. amorphognathoides belt but without evidence of the Wenlock epoch. The basement and Chejiaba formations are the third red beds, mainly found in the lower part of the O.snajdri belt to the O.crispa belt, dating from the late Loddell period of the Rhodopes. Sedimentary Records of the Wendeluoxike and Rodorod Gost Periods on the Yangtze Platform.