The Cambrian oolitic limestones in the Dabeiwang section in Xuzhou, Jiangsu are characterized by numerous layers,complicated textures and types and diverse morphologies.

• 徐洲大北望地区寒武系鲕粒灰岩层数众多，结构、类型复杂，形状多样，其中以放射鲕、同心鲕及放射-同心鲕为主。