Botanica Pacifica. A journal of plant science and conservation Preprint
Article first published online: 17 OCT 2015 | DOI: 10.17581/bp.2015.04210
A New Species of Czekanowskia (Czekanowskiales) from the Middle Jurassic of Ordos Basin, China
Chunlin Sun 1, 2, Hongshan Wang 3, David L. Dilcher 4, Tao Li 2 , Yunfeng Li 2 & Yuling Na 2
1 Key Laboratory for Evolution of Past Life and Environment in Northeast Asia, Ministry of Education, Changchun 130026, China
2 Research Center of Palaeontology and Stratigraphy, Jilin University, Changchun 130026, China
3 Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611, USA
4 Departments of Geology and Biology, Indiana University, Bloomington, Indiana 32611, USA
The present paper focuses on the taxonomy of the genus Czekanowskia (Czekanowskiales). A new species, Czekanowskia (subg. Harrisella) ordosensis sp. nov., is described from the Middle Jurassic Yan’an Formation of Ordos Basin, China on the basis of epidermal structures for the first time. The discovery of the new species provides new information on the morphological and epidermal characters of Czekanowskia (subg. Harrisella) and increases our knowledge on its taxonomy. This discovery is significant for a better understanding of the diversity of the genus Czekanowskia during the middle Jurassic and the geological distribution of Czekanowskia (subg. Harrisella) in China. The analysis of the taphonomy suggests that Czekanowskia are seasonally deciduous trees or shrubs growing on the hillside and sloping fields along the meandering rivers, lakes and swamps in a vast sedimentary basin in warm temperate and temperate zones.
Сун Ч., Ванг Х., Дильчер Д.Л., Ли Т., Ли Ю., На Ю. Новый вид Czekanowskia (Czekanowskiales) из среднеюрских отложений бассейна Ордос, Китай. Основное внимание в статье уделяется таксономии рода Czekanowskia (Czekanowskiales). Новый вид, Czekanowskia (subg. Harrisella) ordosensis sp. nov., впервые описывается из среднеюрских отложений формации Яньань бассейна Ордос, Китай, на основе эпидермальных структур листа. Открытие нового вида дает новую информацию о морфологических и эпидермальных признаках рода Czekanowskia (subg. Harrisella) и расширяет наши знания о его таксономии. Данная находка имеет большое значение для понимания разнообразия рода Czekanowskia во время среднеюрского периода и его распространении в геологическом времени в Китае. Анализ тафоценозов показывает, что Czekanowskia была представлена сезонно листопадными деревьями или кустарниками, растущими на склонах гор и пологих участках вдоль речных долин, по берегам озер и болот в обширных осадочных бассейнах в тепло-умеренной и умеренной зонах.
Keywords: Czekanowskia, Czekanowskiales, Middle Jurassic, Ordos Basin, China, среднеюрский период, бассейн Ордос, Китай
References
Ash, S.R. 1994. First occurrence of Czekanowskia (Gymnospermae, Czekanowskiales) in the United States. Review of Palaeobotany and Palynology 81:129–140. CrossRef
Dilcher, D.L. 1974. Approaches to the identification of angiosperm leaf remains. Botanical Review 40:1–157. CrossRef
Doludenko, M.P. & E.R. Orlovskaya 1976. Jurassic flora of the Karatau. Nauka, Moskva, 262 pp. (in Russian). [Долуденко М.П., Орловская Э.Р. 1976. Юрская флора Каратау. Москва: Наука. 262 с.].
Doludenko, M.P. & E.S. Rasskazova 1972. Ginkgoales and Czekanowskiales of the Irkutsk Basin. Trudy Geologicheskogo Instituta AN SSSP 230:7–43 (in Russian). [Долуденко М.П., Рассказова Е.С. 1972. Гинкговые и чекановскиевые Иркутского бассейна // Труды Геологического института АН СССР. Вып. 230. С. 7–43].
Florin, R. 1936. Die fossilen Ginkgophyten von Franz-Joseph-Land nebst Erörterungen über vermeintliche Cordaitales Mesozoischen Alters, I. Spezieller Teil. Palaeontographica B81(3–6): 71–173.
Ge, Y.H., C.L. Sun & M.X. Liu 2004. Discovery of Middle Jurassic flora from Gaotouyao area in northeastern margin of Ordos Basin. Global Geology 23(2):107–111 (in Chinese with English abstract).
Ge, Y.H., C.L. Sun & M.X. Liu 2005. Stratigraphic division and correlation of the Yan'an Formation in the northeastern margin of the Ordos Basin, China. Journal of Stratigraphy 31(2):151–156 (in Chinese with English abstract).
Ge, Y.H., C.L. Sun & M.X. Liu 2006. The flora from the Middle Jurassic Yan'an Formation in the northeastern margin of Ordos Basin and discussion on the palaeoclamate. Journal of Jilin University (Earth Science Edition) 36(2): 164–168 (in Chinese with English abstract).
Geological Institute of Chinese Academy of Geological Sciences (eds.) 1980. Mesozoic stratigraphy and paleontology from Shanganning Basin. Vol.1. Geological Publishing House, Beijing, 212 pp. (in Chinese).
Geological and Mineral Resources Bureau of Inner Mongolia Autonomous Region (eds.) 1991. Regional geology of Inner Mongolia autonomous region. Geological Publishing House, Beijing (in Chinese with English abstract).
Harris, T.M. 1926. The Rhaetic flora of Scoresby Sound, East Greenland. Meddelelser om Grønland 68:45–148.
Harris, T.M. 1935. The fossil flora of Scoresby Sound, East Greenland. 4. Ginkgoales, Coniferales, Lycopotales, and isolated fructification. Meddelelser om Grønland 112:1–176.
Harris, T.M. 1951. The fructification of Czekanowskia and its allies. Philosophical Transactions of the Royal Society B: Biological Sciences 235:483–508. CrossRef
Harris, T.M., J. Miller 1974. Czekanowskiales. In: The Yorkshire Jurassic flora. Vol IV (T.M. Harris, W. Millington & J. Miller, eds.), pp. 79–146. British Museum (Natural History), London.
He, Z.X., H. Yang & X.Q. Yuan 2004. Atlas of geology profile in Ordos Basin. Petroleum Industry Press, Beijing (in Chinese).
Heer, O. 1876. Beiträge zur Jura-Flora Ostsibiriens und des Amurlandes. Mémoires de l'Academie Imperiale des Sciences de Saint-Petersbourg 22:1–222.
Johansson, N. 1922. Die rätische Flora der Kohlengruben bei Stabbarp und Skromberga in Schonen. Kungliga Svenska Vetanskapsakademiens Handlingar 63:1–78.
Kerp, H., 1990. The study of fossil gymnosperms by means of cuticular analysis. Palaios 5:548–569. CrossRef
Kerp, H. & M. Krings 1999. Light microscopy of cuticles. In: Fossil plants and spores: modern techniques (T.P. Jones & N.P. Rowe, eds.), pp. 52–56. Geological Society, London.
Kimura, T., T. Ohana 1979. Czekanowskia nipponica sp nov. from the Upper Cretaceous Omichidani Formation, Ishikawa prefecture in the inner zone of Central Japan. Proceedings of the Japan Academy 54:595–600. CrossRef
Kostina, E.I. 1999. Czekanowskiales from the Jurassic deposits of the Kansk Coal Basin (Siberia). Paleontological Journal 33:577–584.
Kostina, E.I. 2004 Jurassic flora of the Kansk coal-beering basin. In: Trudy Geologicheskogo Instituta (M.A. Akhmet'ev, ed.), pp. 1–200, Geos, Moskva (in Russian). [Костина Е.И. 2004. Юрская флора Канского угленосного бассейна // Труды Геологического института / отв. ред. М.А. Ахметьев. Москва: ГЕОС. 200 с.].
Krassilov, V.A. 1968. A new group of Mesozoic gymnosperms: Czekanowskiales. Doklady Akademii Nauk SSSR 178:942–945 (in Russian). [Красилов В.А. 1968. Новая группа мезозойских голосеменных – Сzekanоvskiales // Доклады АН СССР. Т. 178. С. 942–945].
Krassilov, V.A. 1972 b. Mesozoic flora of Bureya River. Ginkgoales and Czekanowskiales. Nauka, Moscow, 150 pp. (in Russian). [Красилов В.А. Мезозойская флора реки Буреи (Ginkgoales и Czekanowskiales). М.: Наука, 1972 б. 150 с.].
Krassilov, V.A. 1972b. On morphology and systematics of ginkgos and czekanowskias. Paleontologicheskii Zhurnal 1: 113–118 (in Russian). [Красилов В.А. 1972. О морфологии и систематике гинкговых и чекановскиевых // Палеонтологический журнал. № 1. С. 113–118].
Krassilov, V.A. 1977. The origin of angiosperms. Botanical review 43(1):143–176. CrossRef
Krassilov, V.A. 1997. Angiosperm Origins: Morphological and Ecological Aspects. Pensoft, Sofia, 270 pp.
Li, P.J., Y.L. He, X.W. Wu, S.W. Mei & B.Y. Li 1988. Early and Middle Jurassic strata and their floras from northeastern border of Qaidam Basin, Qinghai. Nanjing University Press, Nanjing 231 pp. (in Chinese with English summary).
Pant, D.D. 1957. The classification of gymnospermous plants. Palaeobotanist 6:65–70.
Samylina, V.A. & A.I. Kiritchkova 1991. The genus Czekanowskia (systematics, history, distribution and stratigraphic significance). Nauka, Leningrad, 144 pp. (in Russian). [Самылина В.А., Киричкова А.И. 1991. Род Czekanowskia: систематика, история, распространение, значение для стратиграфии. Ленинград: Наука. 144 с.].
Samylina, V.A. & A.I. Kiritchkova 1993. The genus Czekanowskia Heer: principles of systematics, range in space and time. Review of Palaeobotany and Palynology 79:271–284. CrossRef
Sun, C.L. 1992. The division of the Early Jurassic floristic province of the Eurasia continent. Journal of Changchun University of Earth Science (Collection of Doctoral dissertations): 178–187 (in Chinese with English abstract).
Sun, C.L., D.L. Dilcher, H.S. Wang, G. Sun & Y. Ge 2009. Czekanowskia from the Jurassic of Inner Mongolia, China. International Journal of Plant Sciences 170(9):1183–1194. CrossRef
Sun, C.L., T. Li, Y.W. Sun et al. 2000. Early Jurassic fossil cycads from the Yihe Basin in southern Jilin Province: paleoclimatic significance. Geology and Resources 19(1):1–8 (in Chinese with English abstract).
Tanner, L.H., X. Wang, A.C. Morabito 2012. Fossil charcoal from the Middle Jurassic of the Ordos Basin, China and its paleoatmospheric implications. Geoscience Frontiers 3(4):493–502. CrossRef
Wu, X.W., S.H. Deng, Y.L. Zhang 2002. Fossil plants from the Jurassic of Chaoshui Basin, Northwest China. Palaeoworld 14:136–201 (in Chinese with English abstract).
|
|