File:Oosterella cultrata (d'Orbigny) Lower Hauterivian, Krapchene, Montana Province, Cr1 971X1 (Coll. G. Mandov) at the Sofia University 'St. Kliment Ohridski' Museum of Paleontology and Historical Geology.jpg
![File:Oosterella cultrata (d'Orbigny) Lower Hauterivian, Krapchene, Montana Province, Cr1 971X1 (Coll. G. Mandov) at the Sofia University 'St. Kliment Ohridski' Museum of Paleontology and Historical Geology.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Oosterella_cultrata_%28d%27Orbigny%29_Lower_Hauterivian%2C_Krapchene%2C_Montana_Province%2C_Cr1_971X1_%28Coll._G._Mandov%29_at_the_Sofia_University_%27St._Kliment_Ohridski%27_Museum_of_Paleontology_and_Historical_Geology.jpg/800px-thumbnail.jpg?20220409115819)
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