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KOSMOCERATINAE
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Kosmoceras castor |
Kosmoceras gemmatum | |
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| Kosmoceras transitionis | ||
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| Kosmoceras obductum | ||
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| Gulielmiceras fuchsi | ||
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| Kosmoceras jason | ||
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All ammonites from Ryazan region |
Kosmoceras spinosum | |
