Trace fossils from marginal lacustrine deposits of the Cretaceous Jinju Formation, southern coast of Korea

Two of the four trackway-bearing ichnocoenoses present in the study area are considered representative of composite ichnofacies. Sinusoidal burrows or trails and simple irregular interface burrows or trails probably formed in wet, possibly submerged, soupground-softground conditions in low- or medium-energy lake margins, and represent the Mermia ichnofacies. Trackways and meniscate burrows probably formed on the subsequently subaerially exposed lake margins following lake regression and represent an overprinting by the Scoyenia ichnofacies. The other two trackway-bearing ichnocoenoses are from the Scoyenia ichnofacies alone.