Domatoceratidae Miller & Youngquist 1949

Family Domatoceratidae Miller & Youngquist, 1949 Diagnosis Family of the superfamily Grypoceratoidea with a thinly to thickly discoidal, subinvolute to evolute conch. Whorl profile in the adult stage usually compressed subquadrate or inverted trapezoidal. Umbilical margin distinct or sharp; ventrolateral shoulder nearly rectangular to broadly rounded, rarely skid-like. Ornament consisting of fine growth lines; some species have tubercles on the ventrolateral shoulder. Suture line always with rounded but distinct external, lateral and internal lobes separated by a narrowly rounded or subacute saddles; without annular process (from Korn 2025). Included genera Pselioceras Hyatt, 1884 (Permian); Titanoceras Hyatt, 1884 (Carboniferous); Domatoceras Hyatt, 1891 (Carboniferous to Permian); Pseudometacoceras Miller, Dunbar & Condra, 1933 [synonym of Domatoceras Hyatt, 1891]; Paradomatoceras Delépine, 1937 (Carboniferous); Plummeroceras Kummel, 1953 (Permian); Neodomatoceras Ruzhencev & Shimansky, 1954 (Permian); Neostenopoceras Zhao, Liang & Zheng, 1978 (Permian); Parapenascoceras Ruzhencev & Shimansky, 1954 (Permian); Parastenopoceras Ruzhencev & Shimansky, 1954 (Permian); Penascoceras Ruzhencev & Shimansky, 1954 (Permian); Permodomatoceras Ruzhencev & Shimansky, 1954 (Permian); Stenodomatoceras Ruzhencev & Shimansky, 1954 (Permian); Virgaloceras Schindewolf, 1954 (Permian); Neostenopoceras Zhao, Liang & Zheng, 1978 (Permian); Shatoceras Leonova & Shchedukhin, 2020 (Permian); Omorphoceras Leonova & Shchedukhin, 2023 (Permian); Fididomatoceras Korn & Ghaderi, 2025 (Permian). Remarks A detailed discussion of the Domatoceratidae has been given by Korn (2025).