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Chaozuibeizhu
超嘴贝属
rhynchotreta
腕足动物的绝灭属。化石通常见于海相志留系。近似三角形的小壳装饰著纵向延伸到壳缘的特殊的脊。由于其时限短,因此是确定志留纪地层和时代的标准化石。