A new record of the trace fossil Selenichnites from the Middle Jurassic Scalby Formation of the Cleveland Basin, Yorkshire

Summary: Trace fossils of the ichnogenus Selenichnites are described from the Long Nab Member of the Scalby Formation, which is the highest unit of the Middle Jurassic Ravenscar Group of the Cleveland Basin, Yorkshire. The presence of Selenichnites hundalensis at this level extends the known range of this ichnospecies in the Cleveland Basin from the Bajocian up into the Bathonian. Together with other associated specimens, assigned to Selenichnites isp. and Selenichnites isp. indet., these ichnotaxa are regarded as having been made by limulids which inhabited a coastal environment that experienced both marine and freshwater conditions. One of the specimens provides evidence as to the depth of burial the maker achieved.