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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Paleontological Journal</journal-id><journal-title-group><journal-title xml:lang="en">Paleontological Journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Палеонтологический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0031-031X</issn><issn publication-format="electronic">3034-5871</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">684732</article-id><article-id pub-id-type="doi">10.31857/S0031031X24050031</article-id><article-id pub-id-type="edn">QUXWVA</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">New Records of Ammonoids from the Mid-Carboniferous Boundary Beds in the Iset Section (Middle Urals)</article-title><trans-title-group xml:lang="ru"><trans-title>Новые находки аммоноидей из пограничных отложений нижнего и среднего карбона разреза Исеть (Средний Урал)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nikolaeva</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Николаева</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>44svnikol@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zhuravlev</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Журавлев</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>micropalaeontology@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dub</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Дуб</surname><given-names>С. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sapurin@igg.uran.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stepanova</surname><given-names>T. I.</given-names></name><name xml:lang="ru"><surname>Степанова</surname><given-names>Т. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>stepanova@igg.uran.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mizens</surname><given-names>G. A.</given-names></name><name xml:lang="ru"><surname>Мизенс</surname><given-names>Г. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>mizens@igg.uran.ru</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Borissiak Paleontological Institute, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Палеонтологический институт им. А.А. Борисяка РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">N.P. Yushkin Institute of Geology, Komi Science Center, Ural Branch of Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт геологии им. акад. Н.П. Юшкина, ФИЦ Коми научный центр УрО РАН</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Zavaritsky Institute of Geology and Geochemistry, Ural Branch, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт геологии и геохимии им. акад. А.Н. Заварицкого УрО РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-12-17" publication-format="electronic"><day>17</day><month>12</month><year>2024</year></pub-date><issue>5</issue><fpage>26</fpage><lpage>39</lpage><history><date date-type="received" iso-8601-date="2025-06-16"><day>16</day><month>06</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0031-031X/article/view/684732">https://journals.eco-vector.com/0031-031X/article/view/684732</self-uri><abstract xml:lang="en"><p>A Late Serpukhovian ammonoid assemblage was recovered from the Mid-Carboniferous boundary beds cropping out in an active stone crushing quarry on the right bank of the Iset River (Middle Urals). The ammonoid assemblage includes <italic>Epicanites </italic>sp.,<italic> Stenopronorites uralensis </italic>(Karpinsky),<italic> Delepinoceras bressoni </italic>Ruzhencev,<italic> Proshumardites principalis </italic>Ruzhencev et Bogoslovskaya,<italic> Deleshumardites delepinei </italic>(Schindewolf),<italic> Stenoglaphyrites isetensis </italic>sp. nov.<italic>, Glaphyrites </italic>sp<italic>., Fayettevillea </italic>sp.,<italic> Syngastrioceras</italic> sp., <italic>Eumorphoceras </italic>aff<italic>. transuralense </italic>Ruzhencev et Bogoslovskaya, characterizing the <italic>Deleshumardites–Delepinoceras</italic> (= <italic>Fayettevillea</italic>–<italic>Delepinoceras</italic>) Genozone, which correlates with the E<sub>2</sub> Zone of Europe and its equivalents in other areas of the world. The assemblage is described and compared with ammonoid associations of this age from other regions of the world. A new species, <italic>Stenoglaphyrites isetensis</italic> Nikolaeva sp. nov., is described.</p></abstract><trans-abstract xml:lang="ru"><p>В пограничных отложениях нижнего и среднего карбона в разрезе действующего щебеночного карьера на берегу р. Исеть на Среднем Урале обнаружены позднесерпуховские аммоноидеи. Комплекс аммоноидей, включающий в себя Epicanites sp., Stenopronorites uralensis (Karpinsky), Delepinoceras bressoni Ruzhencev, Proshumardites principalis Ruzhencev et Bogoslovskaya, Deleshumardites delepinei (Schindewolf), Stenoglaphyrites isetensis sp. nov., Glaphyrites sp., Fayettevillea sp., Syngastrioceras sp. и Eumorphoceras aff. transuralense Ruzhencev et Bogoslovskaya, характеризует генозону <italic>Deleshumardites</italic><italic>–</italic><italic>Delepinoceras</italic><italic> </italic>(<italic>= </italic><italic>Fayettevillea</italic><italic>–</italic><italic>Delepinoceras</italic>), которая сопоставляется с зоной E<sub>2</sub> Европы и ее аналогами в других районах мира. Дана характеристика комплекса и проведено сравнение с сообществами аммоноидей из других регионов мира. Описан новый вид Stenoglaphyrites isetensis Nikolaeva, sp. nov.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ammonoids</kwd><kwd>Mid-Carboniferous boundary</kwd><kwd>Upper Serpukhovian</kwd><kwd>Middle Urals</kwd><kwd>Iset</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>аммоноидеи</kwd><kwd>верхнесерпуховский подъярус</kwd><kwd>Средний Урал</kwd><kwd>Исеть</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Республики Казахстан</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Republic of Kazakhstan</institution></institution-wrap></funding-source><award-id>AP14871618</award-id></award-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Казанский (Приволжский) федеральный университет</institution></institution-wrap><institution-wrap><institution xml:lang="en">Kazan (Volga Region) Federal University</institution></institution-wrap></funding-source></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Астахова Т.В. 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