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Zhuravleva, F. A. (1978). Devonskie Ortocerodyi - Nadotryad Orthoceratoidea [Devonian orthoceroids - superorder Orthoceratiodea]. Akademiia Nauk SSSR, Trudy Paleontologicheskogo Instituta. 168: 1-222 [in Russian].
Zhuravleva, F. A. (1978). Devonskie Ortocerodyi - Nadotryad Orthoceratoidea [Devonian orthoceroids - superorder Orthoceratiodea]. Akademiia Nauk SSSR, Trudy Paleontologicheskogo Instituta. 168: 1-222 [in Russian].
