东濮凹陷古近系沙三中亚段典型遗迹化石 A—Cochlichnus anguineus,文88-1井,3436im;B—a为Gordia mollassica,b为Pilichnus lacustris,胡5-71井,2203im;C—Planolites montanus,桥17井,3709im;D—Palaeophycus isp.,胡7-10井,2013im;E—Skolithos verticalis,文13-358井,3425im;F—Mermoides brevilinearis,春8井,3162im;G—Parapaleodictyon multilateralis,胡7-122井,1702im;H—Semirotundichnus dongyingensis, 桥16井,3819im;I—a为Puyangichnus lacustris,b为Mermoides lineatus,文140井,2610im |