↑ V. V. Arkad’ev; A. A. Fedorova; Yu. N. Savel’eva & E. M. Tesakova (2006). "Biostratigraphy of Jurassic-Cretaceous boundary sediments in the Eastern Crimea". Stratigraphy and Geological Correlation. 14 (3): 302. Bibcode:2006SGC....14..302A. doi:10.1134/S0869593806030063.
↑ T.N.Smirnova; D.I.McKinnon (1995). Apodosia, an enigmatic genus of micromorphic brachiopods from Cretaceous of Crimea and Jurassic of England.
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