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类Ｇａｌｏｗａｙｉｎｅｌａ长期以来被当作长兴阶的带化石，是长兴阶底界的标志。江西上高七宝山剖面表明Ｇａｌｏｗａｙｉｎｅｌａ富集层并非像以往认为的那样是稳定的一层，在此剖面上至少有二层：下层在Ｃｌａｒｋｉｎａｌｅｖｅｎｉ带之下，其上下均有典型的吴家坪期的菊石（Ｋｏｎｇｌｉｎｇｉｔｅｓ等）；上层与吴家坪期的牙形刺Ｃｌａｒｋｉｎａｏｒｉｅｎｔａｌｉｓ，Ｃ．ｇｕａｎｇｙｕａｎｅｎｓｉｓ，Ｃ．ｄｅｍｉｃｏｒｎｉｓ，Ｃ．ｌｉａｎｇｓｈａｎｅｎｓｉｓ共存。这一事实表明Ｇａｌｏｗａｙｉｎｅｌａｍｅｉｔｉｅｎｅｎｓｉｓ是吴家坪期的而不是长兴期的。为此建议，长兴阶的底界不用类定义，而以牙形刺Ｃｌａｒｋｉｎａｓｕｂｃａｒｉｎａｔａ和／或Ｃ．ｗａｎｇｉ的首次出现为准。
The Gallo Class Galowayinela has long been regarded as the fossil of the Changxing order and is the symbol of Changxing’s bottom boundary. The section of Qibao in Shanggao, Jiangxi indicates that the Galowayinela enrichment layer is not as stable as previously thought and has at least two layers in this section: the lower layer is under the Clarkinaleveni belt with typical Wujiaping period ammonites above and below (Konglingites, etc.); Upper and Wujiaping period conodonts Clarkinaorientalis, C. guangyuanensis, C. demicornis, C. liangshanensis coexist. This fact shows that Galowayinelameitienensis is Wujiaping period instead of Changxing period. For this reason, it is suggested that the bottom boundary of the Changxing order need not be defined in the genus Clark, but rather in the form of Clarkinasubcarinata and / or C. wii’s first appearance prevail.