Discovered in the Lealt Shale Formation on the Isle of Skye in Scotland in 2017, Dearc sgiathanach (pronounced ‘jark ski-a-naw-ka’) was a Middle Jurassic rhamphorhynchine pterosaur, and quite a large one at that. Its precise size is uncertain, but the estimated wingspan is between 1.9 and 3.8 metres, which makes it the largest known aligerous animal of its time as well as one of the largest known rhamphorhynchids.