On the territory of the western slope of the Northern Urals and Pai-Khoy, deposits of the middle Devsha Division are widespread. Their characteristic feature is significant facies variability both in area and time: sediments from continental (?) to marine, relatively deep-water sediments are represented here. For stratigraphy and correlation of the Middle Devonian marine sediments, along with other faunal groups, the remains of four-beam corals, which are widespread in these sediments, are important...