The ammonoid genus Spiroceras (Spiroceratidae, Ammonoidea) from the Upper Bajocian of the Northern Caucasus
2017 ◽
Vol 51
(2)
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pp. 133-142
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2018 ◽
Vol 52
(4)
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pp. 379-388
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2017 ◽
Vol 51
(3)
◽
pp. 247-257
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2017 ◽
Vol 51
(5)
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pp. 464-479
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