Whitby Mudstone
The Whitby Mudstone is a Toarcian geological formation in Yorkshire and Worcestershire, England. The formation, part of the Lias Group, is present in the Cleveland and Worcester Basins and the East Midlands Shelf.remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.. One of the more notable discoveries is the skull of the pterosaur Parapsicephalus, found within the Alum Shale Member.