首次在四川江油马鞍塘天井山组顶部发现Thalassinoides suevicus,属于Glossifungites遗迹相,属滨海或潮下带在未完全石化的、处于半固结状态的沉积底质上所产生的遗迹化石组合,发育在停积面上,因受到下伏硬底构造的限制,仅产于上表面,没有向下发展,是该地区从开阔海台地相转变为局限海台地相的证据。 For the first time, Thalassinoides suevicus was found at the top of the Paysan Formation in the Ma’antang Formation, Jiangyou, Sichuan. It belongs to the relic of the Glossifungites and belongs to the relic fossil assemblage produced on the semi-consolidated sedimentary sediments in the marina or the subtidal zone. Because of the limitation of the underlying hard bottom structure, the stopover surface is only produced on the upper surface and does not develop downward. It is evidence of the area’s transformation from an open platform to a restricted platform.