IRMNG name details
original description
Sazonova, I.G., Sazonov, N.T. (1991). Схема стратиграфии нижнего мела Восточно-Европейской платформы (Русская суббореальная провинция) [Stratigraphic classification of the Lower Cretaceous of the East-European Platform (Russian subboreal province).]. <em>Бюллетень Московского общества испытателей природы. Отдел геологический [Bulletin of the Moscow Society of Natural Scientists. Geological department].</em> 66(4): 49-63., available online at http://www.jurassicsystem.narod.ru/papers/SasonovaSasonov1991.pdf [details] Available for editors 
source of synonymy
Frau, C.; Wimbledon, W. A.; Ifrim, C.; Bulot, L. G.; Pohl, A. (2021). Berriasian ammonites of supposed Tethyan origin from the type 'Ryazanian', Russia: a systematic re-interpretation. <em>Palaeoworld.</em> 30(3): 515-537., available online at https://hal.science/hal-03341891v1 [details]
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