<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<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">677971</article-id><article-id pub-id-type="doi">10.31857/S0031031X24060114</article-id><article-id pub-id-type="edn">QIENNM</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 species of <italic>Otozamites</italic> braun (Bennettitales) with preserved anatomical structure from the middle jurassic of Kursk region, Russia</article-title><trans-title-group xml:lang="ru"><trans-title>Новый вид Otozamites braun (Bennettitales) с сохранившимся анатомическим строением из среднеюрских отложений Курской области, Россия</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bazhenova</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Баженова</surname><given-names>Н. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gordynat@mail.ru</email><xref ref-type="aff" rid="aff1"/></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><pub-date date-type="pub" iso-8601-date="2024-12-19" publication-format="electronic"><day>19</day><month>12</month><year>2024</year></pub-date><issue>6</issue><fpage>125</fpage><lpage>139</lpage><history><date date-type="received" iso-8601-date="2025-04-01"><day>01</day><month>04</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/677971">https://journals.eco-vector.com/0031-031X/article/view/677971</self-uri><abstract xml:lang="en"><p>The new bennettitalean species <italic>Otozamites meyenii</italic> sp. nov. is described from the Middle Jurassic deposits of the Mikhailovskii Rudnik open mine (Kursk Region). The new species is characterized by long finger-like papillae on the covering cells of the pinnae lower epidermis. The rachis vascular system of the new species possesses structure, characteristic of leaves of other Bennettitales: a ring, formed by two U-shaped rows of collateral vascular bundles with xylem faced toward interior. Unlike the Lower Cretaceous <italic>O. kerae</italic> Ohana et Kimura, possessing well defined bundles, the new species has indistinct boundaries between bundles. Our data also point on the presence in representatives of the genus <italic>Otozamites </italic>Braun of tracheids, characteristic of several angiosperms, whereas the presence of vessels in the vascular system of <italic>Otozamites</italic> leaves has not been confirmed.</p></abstract><trans-abstract xml:lang="ru"><p>Из среднеюрских отложений карьера Михайловский рудник (Курская обл.) описан новый вид беннеттитов Otozamites meyenii sp. nov., характеризующийся густо расположенными длинными пальцевидными папиллами на покровных клетках нижнего эпидермиса перышек. Проводящая система рахиса нового вида имеет строение, характерное для листьев других беннеттитов: круг, образованный двумя U-образными рядами коллатеральных пучков с ориентированной вовнутрь ксилемой. В отличие от раннемелового O. kerae Ohana et Kimura, имеющего хорошо оформленные проводящие пучки, у нового вида пучки плохо обособлены. Также наши данные указывают на наличие у представителей рода Otozamites Braun трахеид, характерных для некоторых покрытосеменных; наличие сосудов в проводящей системе листьев Otozamites не подтверждается.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Middle Jurassic</kwd><kwd>Bennettitales</kwd><kwd>Otozamites</kwd><kwd>morphology</kwd><kwd>anatomy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>средняя юра</kwd><kwd>Bennettitales</kwd><kwd>Otozamites</kwd><kwd>морфология</kwd><kwd>анатомия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Горденко Н.В., Броушкин А.В. Семенные органы Trisquamales ordo nov. (Gymnospermae) из средней юры Курской области, европейская часть России // Палеонтол. журн. 2018. № 1. С. 86–104.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Красилов В.А. Происхождение и ранняя эволюция цветковых растений. М.: Наука, 1989. 263 с.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Barale G. La paléoflore Jurassique du Jura Français: étude systématique, aspects stratigraphiques et paléoécologiques. Villeurbanne, 198l. 467 p. (Docum. Lab. Géol. Lyon. 198l. № 81).</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Barbacka M., Pálfy J., Smith P.L. Hettangian (Early Jurassic) plant fossils from Puale Bay // Rev. Palaeobot. Palynol. 2006. V. 142. № 1–2. P. 33–46.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Barnard P.D., Miller J. Flora of the Shemshak Formation (Elburs, Iran), Part 3: Middle Jurassic (Dogger) plants from Katumbargah, Vasek Gah Imam Manak // Palaeontogr. Abt. B. 1976. Bd 155. Lief. 1–4. P. 31–117.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Bierhorst D.V. Morphology of Vascular Plants. N.-Y.: Macmillan, 1971. 560 p.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Bomfleur B., Pott Ch., Kerp H. Plant assemblages from the Shafer Peak Formation (Lower Jurassic), north Victoria Land, Transantarctic Mountains // Antarctic Sci. 2011. V. 23. № 2. Р. 188–208.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Bose M.N., Kasat M.L. The genus Ptilophyllum in India // Palaeobotanist. 1972. V. 19. № 2. P. 115–145.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Bose M.N., Zeba-Bano. The genus Dictyozamites Oldham from India // Palaeobotanist. 1978. V. 25. P. 79–99.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Dower B.L., Bateman R.M., Stevenson D.W. Systematics, ontogeny, and phylogenetic implications of exceptional anatomically preserved cycadophyte leaves from the Middle Jurassic of Bearreraig Bay, Skye, Northwest Scotland // The Botan. Rev. 2004. V. 70. № 2. P. 105–120.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Gordenko N.V. Middle Jurassic flora of the Peski locality (Moscow Region): systematics, paleoecology, and phytogeography // Paleontol. J. 2008. V. 42. № 12. P. 1285–1382.</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Gordenko N.V., Broushkin A.V. A new bennettitalean genus from the Middle Jurassic of the Mikhailovskii Rudnik locality (Kursk Region, Russia) // Paleontol. J. 2010. V. 44. № 10. P. 1308–1320.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Gupta K.M., Sharma B.D. Investigations on the Jurassic flora of the Rajmahal hills, India: 2 – On a new species of Ptilophyllum, P. sahnii from Amarjola in Amarapara region // J. Palaeontol. Soc. India. 1968. V. 11. № 5–9. P. 21–28.</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Harris Т.М. The Yorkshire Jurassic Flora, III. L.: Brit. Mus. (Natur. Hist.), 1969. 186 р.</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Krassilov V.A. Early Cretaceous flora of Mongolia // Palaeontogr. Abt. B. 1982. Bd 181. Lief. 1–3. P. 1–43.</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Ohana T., Kimura T. Permineralized Otozamites leaves (Bennettitales) from the Upper Cretaceous of Hokkaido, Japan // Trans. Proc. Palaeontol. Soc. Japan. 1991. V. 164. P. 944–963.</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Rao A.R., Achuthan V. Further contribution to our knowledge of the anatomy of Ptilophyllum // Palaebotanist. 1967. V. 16. № 3. P. 249–257.</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>Ray M.M., Rothwell G.W., Stockey R.A. Anatomically preserved Early Cretaceous Bennettitalean leaves: Nilssoniopteris corrugata n. sp. from Vancouver Island, Canada // J. Paleontol. 2014. V. 88. № 5. P. 1085–1093.</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>Sharma S.D. Investigation on the Jurassic flora of Rajmahal Hills, India. 3. A review of the genus Ptilophyllum of Morris, with description of two new species from Amarjola in the Rajmahal Hills // Palaeontogr. Abt. B. 1967. Bd 120. Lief. 5–6. P. 139–150.</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Schweitzer H.-J., Kirchner M. Die rhäto-jurassischen Floren des Iran und Afghanistans: 13. Cycadophyta III. Bennettitales // Palaeontogr. Abt. B. 2003. Bd 264. Lief. 1–6. S. 1–166.</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>Tidwell W.D., Kim J.H., Kimura T. Mid-Mesozoic leaves from near Ida Bay, southern Tasmania, Australia // Pap. Proc. R. Soc. Tasman. 1987. V. 121. P. 159–170.</mixed-citation></ref><ref id="B22"><label>22.</label><mixed-citation>Vishnu-Mittre. Studies on the fossil flora of Nipania, Rajmahal Series, India – Bennettitales // Palaeobotanist. 1956. V. 5. № 2. P. 95–99.</mixed-citation></ref><ref id="B23"><label>23.</label><mixed-citation>Yamada T. Structurally preserved Zamites bayeri Kvaček from the Coniacian Kashima Formation (Yezo Group) of Hokkaido, Japan // Cret. Res. 2009. V. 30. № 5. P. 1301–1306.</mixed-citation></ref><ref id="B24"><label>24.</label><mixed-citation>Yamada T., Legrand J., Nishida H. Structurally preserved Nilssoniopteris from the Arida Formation (Barremian, Lower Cretaceous) of southwest Japan // Rev. Palaeobot. Palynol. 2009. V. 156. № 3–4. P. 410–417.</mixed-citation></ref></ref-list></back></article>
