Dernov, V. “First Occurrence of the Genus Sphenothallus Hall, 1847 (Cnidaria) in the Carboniferous of the Dnipro-Donets Depression, Ukraine”. Revista Brasileira De Paleontologia, vol. 26, no. 1, June 2023, pp. 13-20, doi:10.4072/rbp.2023.1.02.