On the territory of the western slope of the Northern Urals and Pay‑Khoy, deposits of the Middle Devonian are widespread. A characteristic feature of them is significant facies variability both areally and temporally: here sediments range from continental (?) to marine, including relatively deep‑water facies. For stratigraphy and correlation of the Middle Devonian marine sediments, along with other faunal groups, the remains of rugose corals, which are widespread in these deposits, are important. ...