RT Journal Article SR Electronic T1 Two previously unrecorded xiphosurid trace fossils, Selenichnites rossendalensis and Crescentichnus tesiltus, from the Middle Jurassic of Yorkshire, UK JF Proceedings of the Yorkshire Geological Society FD Geological Society of London SP 254 OP 259 DO 10.1144/pygs2018-017 VO 62 IS 4 A1 Romano, Mike A1 Taylor, Robert YR 2019 UL http://pygs.lyellcollection.org/content/62/4/254.abstract AB The invertebrate trace fossils Selenichnites rossendalensis and Crescentichnus tesiltus are recorded and described from the Middle Jurassic Gristhorpe Member of the Cloughton Formation of the Cleveland Basin. This is the first record of these ichnospecies from the basin and now completes the occurrence of these and other traces assumed to have been made by limulids from all three non-marine formations of the Ravenscar Group.