New taxa of angiosperms from coal-bearing continental deposits in Amur area

Global Geology, 11(2): 78-82(2008)Article id:16739736(2008)02007805New taxa of angiosperms from coal-bearingcontinental deposits in Amur areaTat'yana V. KEZiNAAmur State University, blagoveschensk 675000, RussiaAbstract Considered the question about stratigraphic position of coal-bearing continental deposits of the Amurarea, the main attention is paid to the definition of pollen of angiosperms. Khlonova( 1960), Zaklinskaya(1963), Bratseva(1969 )and other scientists reported a lot about the significance of the pollen. among thenew taxa the special interest represents the first description of Engelhardtia pollen of late Maestrichtian and Pa-eocene deposits. A new kindnov. IsKey words: Cretaceous; Cenozoic; pollen; palynology brown coalIntroductionCenozoic deposits of the coal-bearing continental deposits in the Amur area. A new kind of pollen Vacu-Considered the question about stratigraphic posi-tion of coal-bearing continental deposits of the UpperFor the descriptions, a lot of photos inclAmur region, the main attention is paid to the definiblack-and-white, and color ones(made by the authortion of pollen of angiosperms. Khlonova (1969), using optical microscope and scanning electron micro-Zaklinskaya(1963 ), Bratseva(1969)and other sci- scope)were used.entists reported a lot about the significance of the polMorphological description of pollenlen. Traditionally, Russian paleontologists at strati-graphic division of early Maestrichtian and CenozoicThe description is made according to Internation-deposits along with pollen of atal Code of Botanic Nomenclature, accepted by thespores of plants and pollen of angiospermsXVI Intemational Botanic Congress (St. Louis, Mis-Spores and pollen are the reproductive structures souri, 1999), and also based on the information fromof higher plants. Morphological features(exine struc- famous palaeomorphology works: Pokrovskaya(1950)ture,position and quantity of apertures)are the diag- Zaklinskaya( 1963), Kupriyanova(1986), Kulkovanostic characteristics which allow determining taxa up(1973), Khlonova(1974), Tokarev(2002),etc.to species, genus, or family, and also allow determi-ning the stratigraphic order.Engehardtiapollenites coryloides sp. novThe author described two new kinds of pollen En-gelhardtia( Juglandaceae ) of late Maestrichtian and中国煤化工Ceva, pls. 23, fig. 5CNMHGReceived 8 March, 2008; accepted 16 April, 2008New taxa of angiosperms from coal-bearing continental deposits in Amur areaHolotype P-2-20. Department of Geology of1997. Polyptera manningi JuglandaceaeAmur State University, Raichikhinsk brown-coal mine, Manchester and Dilcher, 1997, p. 654, figs. 26-36Holotype A A-B-502-516. Department of GeDescription Pollen grains tripoology of Amur State University, Arkhara-Boguchanview triangle or circular-triangle, in equatorial view brown-coal mine, late Maestrichtian-Paleocenespheroidal occur very seldom). Palynological grainDescription Pollen grains triporate, in polarsides straight, angles rounded. Exine thin and twolayview triangle-circular with convex sides. Exine thiner, with thickness 1.5 H. Grain structure psilate in and two-layer(1. 5-2. 9 u), nexia fine granulate.light microscope, and fine granulate in SEM. Pores Grains quadrangular. Their density increasing towardmeridian-longitudinal, trough-shaped, and widethe center. In the pore area finer and rarer. NexinaPacking around pore narrow, not more than height of layer is very thin. Harmomegathy( the thinner exinethe pore. Diameter 14-16. 3 p. Pore width 1. 7- area of circular or subcircular shape evident on thedistal side, in the center or slightly deposed towardMaterial More than 10 pollen grains in good one of the pores, similar to the Carya pollen, its innerstatediameter 10-12 Harmomegathy showed by foldsVariability Pollen grain size slightly variesgaps or contour. Edge of the pore psilate in the LmComparison and notes Exine of some grains and fine granulate in SEM. Diameter 26-31. 9 unear the edge of the pore seems as if it bends into the Pore submerged and deep ( 2.94 u)pore. Small platform evident nexia packing )ishaped, diameter2.9μformed before pore, which gives small darker contourMaterial More than 10 pollen grains in goodaround pore in light microscopeDistribution Paleocene-Eocene deposits of theVariability Pollen grain size, depth and widthUpper Amur regionthe pore, and evidence of the harmomegathy vary.Diagnosis( Latin ). Grana pollini triporata, eComparison and notes It is the first descrip-facie polari triangularis vel circulari-triangularia, e fation of the Engelhardtia pollen of late Maestrichtiancie aequatoriali-sphaeroidala(raro occurentia ). Latand Paleocene deposits. Prints of leaves are authenti-is, bistratosa, 1. 5 u crassa. In microscopio optico Arkhara-Boguchan brown-coal mine. Morphologicalstructura grani pollini psilata, in microscopio scanico features point out to some similarity to fossil and mod-electronico-microgranulata. Pori meridionali-elongati, em Engelhardtia species, and also to similarity toalveiformes, lati. Compactio circum porum angusta, specimens of modern Oremunoa species( EngelhardtiaItitudine poriDiametrum grani pollini 14-16. 3 H, latitudeDilcher investigating Paleocene microflora of Wyomingri1.7-2.4State and Montana State( USA)extracted similar pol-In ambitu pollini species Engelhardtia wallichi- len from plants, which they named as Polyptera manana Lindl. hodie viventium in parte meridionali Sinae ningui( Juglandaceae). Innt occursimitatur, sed a magnitudine et structura porum differt.in association with Nordensholdia, Nyssidium, platanus中国煤化工piua. They recon-Engehardtiapollenites caryaformis Kezina sp. nov.CNMH G6O, Fig. 51),andPlate I, figs. 7-11)concluded that this species is the repretive of theTat yana V, KEZINAmost ancient species of Juglandaceae family, which ment of Geology of Amur State University, slideceased its existence in Paleocene. Morphological fea- Arkhara-Boguchan brown-coal mine, late Maestichtures, determined on the basis of studding of leavestian- Danainfruits and seeds, point to its similaraty to PterocaryaDescription Pollen grains triporate, in polargenus. However, our researches of pollen( the most view circular-triangle, in equatorial view -spheroidconservative organ of a plant) proved its similarity to Pores small, round, diameter up to 2 u, connectedthe Engelhardtia genusby " tension bars"."Tension bars"formed by nexinaDistribution late Maestichtian-Paleocene de-packings. Exine surface psilate, rugulate at great en-posits of Zeya-Bureya Bassin. Paleocene depositslargements in SEM. Harmomegathy in the central partnortheastern China(Li, 1983), Paleocene deposits of of the pollen grain. Harmomegathy zone concaveWyoming and Montana states of USA and Mexicoits multi-layer, nonclear-lumpy structure seen inSEM. Diameter 14-16. 3 H.Carya. The name is given according to the presenceMaterial 7 pollen grains in good undamagedof rarefied zone of harmomegathy in the center of pol-stateVariability Pollen grain size slightly variesDiagnosis( Latin). Grana pollini triporata,eComparison and notes Vacuopollis triplicatusfacie polari triangular- circularia cum lateribus conv-pollen have some similarities with modern pollen ofexis. e facieiali-sphaeroidala(raro occuren- genus Simarubinae( Simarubaceae family ) and Ul). Exine tenuis, bistratosa(1.5-2.9crassamoideipites tricostatus. It differs in smaller size andnexia microgranulata. Granula rectangularia. Densiexine structuretas granulosum ad centrum auget. In regione pororumDistribution late Maestichtian Danain depositgranula minor et marius. Porus depressus, profundus of the Zeya-Bureya Basin(2.9-4 u),alveiformis, diametrum pori 2.9 H.Diagnosis( Latin ). Grana pollini minuta, triStratum nexinae valde tenuis. In latere distal grani porata, e facie polari circulari-triangularia, e facie aepollini harmomegathus in centro situs vel ad unum quatoriali sphaeroidal. Pori minuti, rotundi (in diapororum remotus( tenuior regio exine, rotunda vel metro 2 u minor), inter se tractibus conjunct. Trian-quasi rotunda, quo pollen generic Carya imitatur), gulari-circularia zona harmomegathi inter poros sitacum diametro interno 10-12 H. Harmomegathus am- Exine crassa, 1. 5-3perficies exine psilata, inbitu,plicis, disjunctionibus expressus potest. Margomicroscopio scanco electronIco-plgrani pollini in microscopio optico rectus, in mi-Diametrum grani pollini 14 6-16. 3 H.croscopio scanico electronic microechinatusPollen Vacuopollis triplicates quidpiam pollinemEngelhardtia coryloides forma grani polliniviventem gen. Simarubinae imitatur, atque pollinemmagnitudine grani pollini et obligation harmomegathiψ pites trcoststus,sediffertnori grani pollini et omamentatione exine differtThe author described 44 species of spores andVacuopollis triplicates Kezina sp. nov.pollen of late Maestrichtian and Cenozoic deposits ofPlate I, figs. 12-14)the Upper Amur region, including 19 new species1969. Simarubaceae: Bratzeva, Plate XXXIV中国煤化工 hangedCAMH Gored by the auHolotype A-B-505, 508, 513, 516. DepartIntemational Symposium on Creta-New taxa of angiosperms from coal-bearing continental deposits in Amur areaceous Biota and K/T Boundary in Heilonggang RiverSiberia and the Far East. Novosibirsk: the Science, 166Area( Changchun, 2006), and in the 2 IntermationPokrovskaya I M. 1950. The pollen analysis. Moscow: [ nal Paleontologic Congress( Beijing, 2006)1, 565.(in Russian)Kyprianova L A. 1986. Aperture of pollen early AngiospermaeAcknowledgementsin connection with their origin / Sources of the informa-on in phylogenetic systematization of plants. MoscowThe author would thank Prof. M.A. Akhmethe Science, 40-41.(in Russian)0 P. Yrochenko, Prof. Sun Ge. Thanks would exKul kova I A. 1973. Palynological study of Eocene deposits innd to the project 30220130698( NSFC) and Projectthe Yana Indigirka Lowland-Novosibirsk: the Science, 1111 of China for supporting to publish this paper116.(in Russian)Tokarev P I. 2002. Morphology and ultrastructure of pollenReferencesgrains. Moscow: KMK, 1-51.( in Russian)M. 1969. Palynological investigations of the UpperExplanation of PlateCretaceous and Paleogene of the Far East//Proceedings ofthe Geological Institute, the USSR Academy of ScienePlate 1Zaklinskaya Y D. 1963. Pollen of Angiospermae and its value1, 2, 5. Engelhardtia coryloides sp. nov. 1, 2. x 1200; 5. xfor a substantiation to Stratigraphy of Upper Cretaceous de-2000 SEM; Zeya-Byrea sedimentary basin, Raichikhin-posits// Proceedings of the Geological Institute, the USSRAcademy of Sciences, Moscow: the Science, 74-250(in 7-11. Engelhardia caryaformis sp. nov. 3,4. X 1200; 6. xRussian)3500SEM;7-10.×1200;11.x2100SEM;ZeyaKhlonova A F. 1969. Sporo-pollen characteristic of cretaceousdeposits Zeya- Byrea sedimentary basin / Sporo-pollecoal mine. late Maestrichtian-Paleocenecomplexes Mecozoic Siberia and the Far East. Moskow12-14. Vacuopollis triplica sp. nov. Arkhara-Boguchan brownthe Science, 5-66coal mine, late Maestrichtian-PaleoceneKhlonova A F. 1974. Palynology of中国煤化工CNMHGTat'yana V. KEZINA: New taxa of angiosperms from coal-bearing continental deposits in Amur area国煤化工NMHG