Taxonomy and morphological diversity of infructescences Jenkinsella co-occurred with Trochodendroides leaves in the Cretaceous and Paleogene

L. B. Golovneva, P. I. Alekseev



On the basis of new records and reexamination of described fossils a revision of morphology and systematics of fructifications, found in co-occurrence with Trochodendroides Berry leaves was undertaken. The general construction of racemose infructescences and fruits of all known specimens is practically identical. This similarity indicates that these plants were closely related with minor differences that are not sufficient for separate generic designation. We suggest applying the name Jenkinsella Reid et Chandler for dispersed follicular fruits, to fruits in racemes and to infructescences attached to the shoots. This is the earliest appropriate generic name designated for fruits with distinguishable morphology and critical details of inner structures. The diagnosis of the genus Jenkinsella is emended and five new species are described: Jenkinsella krassilovii Golovneva et P. Alekseev, sp. nov., J. knowltonii Golovneva et P. Alekseev, sp. nov., J. conferta P. Alekseev et Golovneva, sp. nov., J. makulbekovii Golovneva et P. Alekseev, sp. nov., J. vilyuensis Golovneva et P. Alekseev, sp. nov. Three new combinations (J. filatovii (Samylina) Golovneva et P. Alekseev, comb. nov., J. jiayinensis (G.P. Feng, C.S. Li, Zhilin, Y.F. Wang et Gabrielyan) Golovneva et P. Alekseev, comb. nov., J. gardnerii (Chandler) Golovneva et P. Alekseev, comb. nov.) are created. Investigation of infructescence arrangement in different species of Jenkinsella provides new data, allowing reinterpretation of fertile shoots construction in Joffrea speirsii.

Key words: Jenkinsella, Nyssidium, Trochodendroides, Cercidiphyllaceae, Cretaceous, Paleogene

Section: Articles

How to cite

Golovneva L. B., Alekseev P. I. 2017. Taxonomy and morphological diversity of infructescences Jenkinsella co-occurred with Trochodendroides leaves in the Cretaceous and Paleogene. Palaeobotany, 8: 92—121.


Alekseev P. I. Early Senonian climate reconstruction for southwestern Siberia on the basis of paleobotanic data // Stratigr. Geol. Correlation. 2014.Vol. 22(3). P. 305–311.

Alekseev P. I., Herman A. B., Shczepetov, S. V. New angiosperm genera from Cretaceous sections of Northern Asia // Stratigr. Geol. Correlation. 2014. Vol. 22(6). P. 606–617.

APG III. An update of the angiosperm phylogeny group classification for the orders and families of flowering plants // Bot. J. Linn. Soc. 2009. Vol. 161(3). P. 105–121.

Baikovskaya T. N. The Upper Cretaceous Floras of Northern Asia // Trans. Bot. Inst. 1956. Ser. 8(2). P. 49–181. (in Russian)

Baikovskaya T. N. The Late Cretaceous floras of the Western Siberia. In: Dorofeev P. I. (Ed.), Special memorial issue dedicated to Kryshtofovich A. N. Moskow-Leningrad: USSR Academy of Science, 1957. P. 65–102. (in Russian)

Basinger J. F., Dilcher D. L. Fruits of Cercidiphyllum from the early Tertiary of Ellesmere Island, Arctic Canada // Amer. J. Bot. 1983. Vol. 70(5). P. 67.

Bell W. A. Uppermost Cretaceous and Paleocene floras of Western Alberta // Bull. Canada Geol. Surv. 1949. Vol. 13. P. 1–231.

Berry E. W. Tertiary floras from British Columbia // Canada Dep. Mines Geol. Surv. Bull. 1926. Vol. 42. P. 91–116.

Berry E. W. A preliminary contribution to the floras of the Whitemud and Ravenscrag Formation // Canada Geol. Surv. Mem. 1935. Vol. 182. P. 1–65.

Bowerbank J. S. A history of the fossil fruits and seeds of the London Clay. London: John Van Voorst, 1840. 144 p.

Brown R. W. Fossil leaves, fruits, and seeds of Cercidiphyllum // J. Paleontol. 1939. Vol. 13. P. 485–499.

Budantsev L. Y. History of the Arctic flora of the Early Cenophytic epoch. Leningrad: Nauka, 1983. 156 p. (in Russian)

Budantsev L. Y. Early Paleogene flora of Western Kamchatka // Proc. Komarov Bot. Inst. 2006. Vol. 22. P. 1–160. (in Russian)

Budantsev L. Y., Golovneva L. B. Fossil Flora of Arctic II. Palaeogene Flora of Spitsbergen. St.-Petersburg: Marafon, 2009. 400 p.

Bugdaeva E. V, Markevich V. S., Sorokin A. P., Bolotsky Y. L. Stratigraphy. In: Bugdaeva E. V (Ed.). Flora and dinosaurs at the Cretaceous-Paleogene boundary of Zeya-Bureya basin. Vladivostok: Dalnauka, 2001. P. 25–43.

Chandler M. E. J. The Lower Tertiary floras of southern England. I. Palaeocene floras: London Clay flora (Supplement) Atlas. British Mus. Nat. History, London. 1961. 354 p.

Chandrasekharam A. Megafossil flora from the Genesee Locality, Alberta, Canada // Palaeontographica. Abt. B. 1974. Bd 147(1–3). P. 1–41.

Crane P. R. A re-evaluation of Cercidiphyllum-like plant fossils from the British Early Tertiary // Bot. J. Linn. Soc. 1984. Vol. 89. P. 199–230.

Crane P. R. Paleobotanical evidence on the early radiation of nonmagnoliid dicotyledons // Pl. Syst. Evol. 1989. Vol. 162. P. 165–191.

Crane P. R., Stockey R. A. Growth and reproductive biology of Joffrea speirsii gen. et sp. nov., a Cercidiphyllum-like plant from the Late Paleocene of Alberta, Canada // Can. J. Bot. 1985. Vol. 63(2). P. 340–364.

Crane P. R., Stockey R. A. Morphology and development of pistillate inflorescences in extant and fossil Cercidiphyllaceae // Ann. Mo. Bot. Gard. 1986. Vol. 73. P. 382–393.

Cronquist A. An integrated system of classification of flowering plants. New York: Columbia Univ. Press, 1981. 1262 p.

Dahlgren R. A revisited system of classification of the angiosperms // Bot. J. Linn. Soc. 1980. Vol. 80. P. 91–124.

Dawson J. W. On fossil plants collected by Mr. R. G. McConnell, on Mackenzie River, and by Mr. T. C. Weston, on Bow River // Roy. Soc. Canada Trans. 1890. Vol. 8(IV). P. 69–74.

Feng G. P., Li C. S., Zhilin S. G., Wang Y. F., Gabrielyan I. G. Nyssidium jiayinense sp. nov. (Cercidiphyllaceae) of the Early Tertiary from north-east China // Bot. J. Lin. Soc. 2000. Vol. 134. P. 471–484.

Fu D. Z., Endress P. K. Cercidiphyllaceae. In: Wu Z. Y., Raven P. H. (Eds.). Flora of China. St. Louis: Missouri Botanical Garden Press, 2001. Vol. 6. P. 126.

Golovneva L. B. Maastrichtian–Danian Floras of the Koryak Upland // Proc. Komarov Bot. inst. 1994. Vol. 13. P. 1–147. (in Russian).

Golovneva L. B. Phytostratigraphy and evolution of Albian-Campnian floras in Siberia. In: Arkadjev V. V., Prozorovsky V. A. (Eds.). The Cretaceous system of Russia, problems of stratigraphy and paleogeography. St.-Petersburg: SPBGU, 2005. P. 177–197. (in Russian).

Golovneva L. B. Alasia, gen. nov. – male inflorescences, associated with Trochodendroides leaves (Cercidiphyllaceae) // Bot. J. 2006a. Vol. 91(12). P. 1898–1906. (In Russian)

Golovneva L. B. The Late Cretaceous floras of the Vilui Basin // Advances in Paleobotany. Program and abstracts. Gainesville, Florida. 2006b. P. 25.

Golovneva L. B., Alekseev P. I. The genus Trochodendroides Berry in the Cretaceous floras of Siberia // Palaeobotany. 2010. Vol. 1. P. 120–166. (in Russian).

Golovneva L. B., Shczepetov S. V. Biostratigraphy of Albian-Cenomanian sediments in the Kiya River Basin (the Chulym-Yenisei area of the West Siberian lowland) // Stratigr. Geol. Correlation. 2010. Vol. 18(2). P. 153–165.

Heer O. Contributions to the fossil flora of North Greenland, being a description of the plants collected by Mr. Edward Whymper during the summer of 1867 // Phil. Trans. Royal Soc., London. 1869. Vol. 159. P. 445–488.

Heer O. Die Miocene Flora und Fauna Spitzbergens // Kongl. Svenska Vetensk. Akad. Handl. 1870. Bd 8 (7). S. 1–98.

Heer O. Beitrage zur fossilen Flora Spitzbergens // Kongl. Svenska Vetensk. Akad. Handl. 1876. Bd 14. S. 1–141.

Heer O. Die fossile Flora Gronlands. Theil 2 // Flora fossilis arctica. Bd. 7. Zurich: Verlag von J. Wunster and Comp., 1883. S. 1–275.

Hickey L. J. Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of western North Dakota // Geol. Soc. Amer. Mem. 1977. Vol. 150. P. 1–181.

Hollick A. The Tertiary floras of Alaska // U. S. Geol. Surv. Prof. Paper. 1936. Vol. 182. P. 1–185.

Iljinskaja I. A. Revision of genus Trochodendroides and new exinct species Cocculus // Bot. J. 1972. Vol. 57(1). P. 17–30. (in Russian).

Iljinskaja I. A. Nyssidium Heer. In: Takhtajan A. L. (Ed.). Magnoliophyta Fossilia URSS. Leningrad: Nauka, 1974a. Vol. 1. P. 123–124. (in Russian).

Iljinskaja I. A. Trochodendroides Berry. In: Takhtajan A. L. (Ed.). Magnoliophyta Fossilia URSS. Leningrad: Nauka, 1974b. Vol. 1. P. 115–122. (in Russian).

Iljinskaja I. A. Cercidiphyllum Siebold et Zucc. In: Takhtajan A. L. (Ed.). Magnoliophyta Fossilia URSS. Leningrad: Nauka, 1974c. Vol. 1. P. 124–128. (in Russian).

Jahnichen H., Mai D. H., Walther H. Blatter und Fruchte von Cercidiphyllum Siebold et Zuccarini im mitteleuropaischen Tertiar // Schriften. Geol. Wiss. 1980. Bd 16. S. 357–399.

Knowlton F. H. A catalogue of the Cretaceous and Tertiary plants of North America // U. S. Geol. Surv. Bull. 1898. Vol. 152. P. 1–247.

Knowlton F. H. The flora of the Denver and associated formations of Colorado // U. S. Geol. Surv. Prof. Pap. 1930. Vol. 155. P. 1–135.

Kovar-Eder J., Meller B., Zetter R. Cercidiphyllum crenatum (Unger) R. W. Brown in der kohlefuhrenden Abfolge von Oberdorf, N Voitsberg, Steiermark // Mitt. Ref. Geol. und Palaont. Landesmuseum Joanneum. 1998. Bd 2. S. 239–263.

Krassilov V. A. Mesozoic plants and the problem of angiosperm ancestry // Lethaia. 1973. Vol. 6. P. 163–178.

Krassilov V. A. Tsagayan flora of Amur Province. Moscow: Nauka, 1976. 92 p. (in Russian).

Krassilov V. A., Fotyanova L. I. New hamamelid fructification from the Paleogene of Kamchatka, with comments on Trochodendrocarpus and Nordenskioldia // Paleontol. J. 1995. Vol. 29(1A). P. 87–95.

Krassilov V. A., Kodrul T. M. In situ pollen of Alasia, a supposed staminate inflorescence of Trochodendroides plant // Acta Mus. Nat. Pragae. 2008. Ser. B. Vol. 64 (2–4). P. 115–124.

Kryshtofovich A. N. Fossil floras of Penjin Bay, Tastakh Lake and Rarytkin Range // Trans. Bot. Inst. 1958. Ser. 8. Vol. 3. P. 74–121. (in Russian).

Kryshtofovich A. N., Baikovskaja T. N. The Tsagayan Flora of the Late Cretaceous in the Armur Region. In: Selections of A. N. Kryshtofovich. Leningrad: Nauka, 1966. P. 184–320. (in Russian).

Kvaček Z., Manum S. B., Boulter M. C. Angiosperms from the Palaeogene of Spitsbergen, including an unfinished work by A. G. Nathorst // Palaeontographica. Abt. B. 1994. Bd 232(1–6). P. 103–128.

Lesquereux L. Enumeration and description of fossil plants from the Western Tertiary formations. Description of species of fossil plants from the Cretaceous of Kansas // U. S. Geol. Geog. Surv. Terr., Ann. Rep. 1873. P. 371–427.

Lesquereux L. Contributions to the fossil flora of the Western Territories. Pt. II. The Tertiary flora // U. S. Geol. Surv. Terr., Rep. 1878. Vol. 7. P. 1–366.

Makulbekov N. M. Paleogene flora of Southern Mongolia. Moscow: Nauka,1988. 96 p. (in Russian).

Manchester S. R. Revisions to Roland Brown’s North American Paleocene flora // Acta Mus. Nat. Pragae. 2014. Ser. B. Vol. 70 (3–4). P. 153–210.

Manchester S. R., Meyer H. W. Oligocene fossil plants of the John Day Formation, Fossil, Oregon // Oregon Geol. 1987. Vol. 49. P. 115–127.

McIver E. E., Basinger J. F. Flora of the Ravenscrag Formation (Paleocene), Southwestern Saskatchewan, Canada // Palaeontographica Canadiana. 1993. Vol. 10. P. 1–167.

Penhallow D. P. Report on Tertiary plants of British Columbia collected by Lawrence M. Lambe in 1906 together with a discussion of previously recorded Tertiary floras // Canada Dep. of Mines. Geol. Surv. Branch. 1908. Vol. 1013. P. 1–167.

Philippova G. G. Cretaceous stratigraphy and floral assemblages of the Northern Pekulney Ranges (Chukotka). Magadan: NEISRI FEB RAS, 2010. 203 p. (in Russian).

Philippova G. G., Abramova L. N. Late Cretaceous Flora of Northeastern Russia. Moscow: Nedra, 1993. 348 p. (in Russian).

Pojarkova A. I. To study of fossil floras from Bureja and Amur Tzagajans. Issue “For akademist Komarov V. L.” Moskow-Leningrad: USSR Academy of Science, 1939. P. 631–682. (in Russian).

Reid E. M., Chandler M. E. The London Clay flora. London: British Mus. Nat. Hist. 1933. 561 p.

Samylina V. A. New data about the Early Cretaceous flora of southern Primorie // Bot. J. 1961. Vol. 45(5). P. 64–72. (in Russian).

Samylina V. A. Cretaceous Flora of the Omsukchan. Leningrad: Nauka, 1976. 206 p. (in Russian).

Schmalhausen J. Wissenschaftliche Resultate der von der Kaiserlichen Akademie der Wisswnschaften zur erforschung des Janalandes und der Neusibirischen Inseln in der Jahren 1885 und 1886 ausgesandten Expedition. Abtheilung II. Tertiare pflanzen der Insel Neusibirien // Memoires de l’Academie Imperiale des Sciences de St.-Petersbourg. 1890. VII Ser. Bd 37(5). S. 1–22.

Sun G.,Quan C.,Sun C. L. Some new knowledge on subdivisions and age of Wuyun Formation in Jiayin of Heilongjiang,China // J. Jilin Univ. Earth Science. 2005.Vol. 35(2). P. 137–142.

Sun G., Akhmrtiev M., Dong Z. M., Ashraf A. R., Sun Y. W., Bugdaeva E., Dilcher D. L., Golovneva L., Harding I., Johnson K., Kezina T., Kodrul T., Lu J. S., Markevich V., Nishida H., Okada H., Park S. O., Sun C. L., Xiong X. Z., Xing Y. L., Zhou Z. L. In search of the Cretaceous-Tertiary Boundary in Heilongjiang River Area of China // Jour. Geosci. NE Asia. 2002. Vol. 5(2). P. 105–113.

Sun G., Akhmetiev M. A., Golovneva L., Bugdaeva E., Quan C., Kodrul T., Nishida H., Sun Y., Sun C., Johnson K., Dilcher D. Late Cretaceous Plants from Jiayin along Heilongjiang River, Northeast China // Cour. Forsch.-Inst. Senckenberg. 2007. Vol. 258. P. 75–83.

Takhtajan A. Diversity and classification of flowering plants. New York: Columbia Univ. Press, 1996. P. 128–141.

Tanai T. The Oligocene floras from the Kushiro Coal Field, Hokkaido, Japan // J. Fac. Sci., Hokkaido Univ. 1970. Ser. 4. Vol. 14(4). P. 383–514.

Tanai T. The revision of the so-called “Cercidiphyllum” leaves from the Paleogene of North Japan // J. Fac. Sci., Hokkaido Univ. 1981. Ser. 4. Vol. 19. P. 451–484.

Tao J.-R., Xiong X.-Z. The latest Cretaceous flora of Heilongjiang Province and the floristic relationship between Eastern Asia and North Amenica // Acta Phytotaxonomica Sinica. 1986. Vol. 24(1). P. 1–15; Vol. 24(2). P. 121–135. (in Chinese with English summary).

Ward L. F. Types of the Laramie flora // U. S. Geol. Surv. Bull. 1887. Vol. 37. P. 1–354.

Wolfe J. A. Tertiary plants from the Cook Inlet region, Alaska // U. S. Geol. Surv. Prof. Pap. 1966. Vol. 398B. P. 1–32.

Yudova D. A., Golovneva L. B. The genus Trochodendroides Berry in the Chingandzha flora of Northeastern Russia // Palaeobotany. 2010. Vol. 5. P. 60–72. (in Russian).