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Reitlinger. E. A. (1958). К вопросу систематики и филогении надсемейства Endothyridea - On the question of the systematics and phylogeny of the superfamily Endothyridea. Voprosy Mikropaleontologii. 2: 53-73.
Reitlinger. E. A. (1958). К вопросу систематики и филогении надсемейства Endothyridea - On the question of the systematics and phylogeny of the superfamily Endothyridea. Voprosy Mikropaleontologii. 2: 53-73.
