马家村组,特点为棕红色钙质粉砂岩,细砂岩夹砂砾岩及泥灰岩,灰绿色粉砂岩与棕红色细砂岩相间出现,产琥珀,
石膏。含鸟脚类,
:Omithopoces,椎骨: Oraithopops 及恐龙蛋化石:Spheroolithus taoheensis,Ovalloolithus cf. Chinhanghouensis;轮藻: Porochara anluensis,P. soheria,Obtusochara luxiensis;孢粉:Schizaea sp.,Lygodium sp.,Proteaceae,Tricolporopollenites sp.。为浅湖相沉积。下与高沟组,上与寺沟组均为整合接触。层型剖面厚390米;区域厚100-1600米。