Laminated Siltstones and Mudstones of Cretaceous lacustrine deposits of Korea display these trace fossils apparently made by some crawling insect. Laterally there are large footprints of Dinosaurs..
These arthropod tracks look quite a bit like Triassic specimens that Edward Hitchcock described as Lithographus punctatus in 1865 from the Connecticut Valley, USA. His original monograph included only a simplified sketch, but in 2005 E.C. Rainforth re-studied all of Hitchcock's specimens for her PhD disstertation at Columbia University. She provided new photographs to supplement the sketches. I am attaching the plate that shows this ichnotaxon.