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Jewelry and ornamental concretions with fossils of the Republic of Kabardino-Balkaria. Mineral composition, gemological characteristics
Published 2023-12-01“…Concretions with fossils of commercial quality are associated with lower Aptian deposits, representing marlstone with a large number of shells, mainly ammonites, and, to a lesser extent, bivalves. …”
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202
Some features of the pale sea urchin (<i>Strongylocentrotus pallidus</i>) biology in Peter the Great Bay (Japan Sea)
Published 2017-03-01“…Age of sea urchins was determined by the growth zones on plates of their shells processed by Jensen method and varied from 3 to 12 years. …”
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