Benjamin SAMES,David J.HORNE

• 1:维也纳大学古生物研究所地质学中心
• 2:萨姆·诺伯尔俄克拉何马自然历史博物馆
• 3:玛丽皇后伦敦大学地理学院
• 4:自然历史博物馆动物学部

摘要(Abstract)：

以非海相介形类为依据而建立的侏罗纪末至白垩纪的生物地层学,尤其是欧洲所谓"Purbeck-Wealden层段"(提塘阶顶部至巴列姆阶/阿普特阶底部)和全球同期沉积层的生物地层学建立已久,但这一生物地层学存有很多问题与局限性。本文对中生代晚期(聚焦于早白垩世)的非海相介形类生物地层学的基本原理、历史、目前进展、存在问题和前景进行了综述。因为介形类的繁殖、扩散与成种机制已有比较成熟的研究,所以介形类的生物地层学的应用潜力被认识已久。然而,全球不同地区中生代晚期的非海相介形类众多的研究积累已构成了一个丰富但常常混乱和矛盾的文献库。这些问题不仅存在于介形类的分类鉴定中,也见于关于古环境和系统发育的解释中。虽然地区性的盆地内的介形类生物地层学研究已产生了好结果,并可能能够用于局部地区的高精度对比。但是在进行地区间(盆地间至全球)的对比时,其实用性广遭怀疑。在过去的二十年间,许多学者采用了将今论古的古生物学研究方法,努力修订和更新中生代晚期的非海相介形类的生物地层学与古环境意义,从而促进了地区间生物地层学研究和对比的发展。古生物学家认识到,对于许多非海相介形类动物来讲,它们的分布和扩散不仅仅局限于单个的水系或较小的地理区域,而是和现生的非海相介形类一样,晚侏罗世至白垩纪的非海相介形类动物和它们的卵可被较大的动物或风长距离搬运,跨越迁移的屏障,进行扩散。鉴于以上事实,地区间的对比必须涉及两大内容:分类学的应用与古环境背景。缺乏适用于地区—全球的稳定和一致的分类学系统是进行正确对比的重要障碍。由于大量地方性分类命名、地方性特有动物的假设、与壳体特征相关的分类和生态型认识的混乱,以及对种内变异尺度的统一认识的缺乏,导致了对生物分异度的过高或过低的估量。非海相白垩纪介形类的地层记录受到诸多因素的影响:分类单元的演化与灭绝、扩散事件、当地的环境变化和地区性至全球的气候变迁。在生物地层学的应用中,我们可以通过不同手段去把握同时代的Cytheroidea,特别是Cypridoidea中具重要地层意义的Cypridea属及其亲近者(即CypridoideaMartin,1940)的分类单元的形态变异度。解释种内变异时需要格外谨慎。区分生物自生(内因)导致的变异(遗传的和形态的变异)和环境(外因)导致的变异(生态表型)是一大难题。比较保守的分类学观念(分类单元很少,但变异极大(分类单元中包含了多种生态表型))有助于不同古环境间的(生物地层)对比。另一方法是运用随着时间的古环境变化及其对介形类组合的组成的影响来进行(生物地层)对比。古生物工作者已在利用受环境控制的周期性介形类组合变化建立对比关系方面进行了大量有意义的尝试,但这些工作仍处在争议中。建立全球生物地层学方法,建立统一而持久的分类概念这一目标可以达到,但不可能在短期内实现。用现代的思想(概念)理解和研究非海相介形类的古生物学和古生物地理学及新资料将有助于修订工作的进展。尽管我们对中生代的非海相介形类的演化和分布的认识还很不全面,但目前我们已取得了可喜的进展。盆地间至大陆间的对比是否可行,早已不是问题。目前和未来的指导原则无疑是发展以介形类为基础,并与其他的年代地层学和地质年代学资料及方案相结合的从地区至全球范围的地层对比系统。因为我们正在迈向一个非海相晚中生代介形类生物地层学的重新解释和应用的新时代,我们必须承认我们还有许多东西需要学习。

关键词(KeyWords)： 生物地层学;非海相介形类;Purbeck和Wealden层段;分类;应用;方法;晚中生代;欧洲

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(No.91114201);; 国家重点基础研究发展计划(2012CB821906)资助出版

作者(Author): Benjamin SAMES,David J.HORNE

DOI: 10.19839/j.cnki.dcxzz.2012.02.009

参考文献(References)：

• Anderson E J.2004.Facies pattern that define orbitally forcedthird-,fourth-,and fifth-order sequences of sixth-order cyclesand their relationship to ostracod faunicycles:the Purbeckian(Berriaian)of Dorset,England.In:D'Argenio B,Premoli Silva I,Wissert H&Ferreri V eds.Cyclostratigraphy:approaches andcase histories.SEPM Special Publication,81:245-260
• Anderson F W.1939.Purbeck and Wealden ostracoda.Annals andMagazine of Natural History(Ser.11),3:291-319
• Anderson F W.1941.Ostracoda from the Portland and Purbeckbeds at Swindon.Proceedings of the Geologists'Association,51:373-384
• Anderson F W.1962.Correlation of the Upper Purbeck beds ofEngland with the German Wealden.Liverpool and ManchesterGeological Journal,3(1):21-32
• Anderson F W.1967.Ostracods from the Weald Clay of England.Bulletin of the Geological Survey of Great Britain,27:237-269
• Anderson F W.1971.The sequence of ostracod faunas in theWealden and Purbeck of the Warlingham Borehole.Bulletin ofthe Geological Survey of Great Britain,36:122-138
• Anderson F W.1973.The Jurassic-Cretaceous transition:thenon-marine ostracod faunas.In:Casey R&Rawson P F eds.The Boreal Lower Cretaceous.Geological Journal,Special Issue5:101-110
• Anderson F W.1985.Ostracod faunas in the Purbeck and Wealdenof England.Journal of Micropalaeontology,4(2):1-68
• Anderson F W&Bazley R A B.1971.The Purbeck beds of theWeald(England):2.The ostracods.Bulletin of the Geological Survey of Great Britain,34:27-174
• Anderson F W,Bazley R A B&Shephard-Thorn E R.1967.Thesedimentary and faunal sequence of the Wadhurst Clay(Wealden)in boreholes at Wadhurst Park,Sussex.Bulletin of theGeological Survey of Great Britain,27:171-235
• Baltanás A&Geiger W.1998.Intraspecific morphological variability:morphometry of valve outline.In:Martens K ed.Sexand parthenogenesis.evolutionary ecology of reproductivemodes in non-marine ostracods.Leiden:Backhuys Publishers.127-142
• Bate R H.1999.Non-marine ostracod assemblages of the Pre-Saltrift basins of West Africa and their role in sequence stratigraphy.In:Cameron N R,Bate R H&Clure V S eds.The oil and gashabitats of the South Atlantic.Geological Society of LondonSpecial Publications,153:283-292
• Bielecka W&Szteijn J.1966.Stratygrafia warstw przej ciowychmi dzy jura a kreda na podstawie mikrofauny(Stratigraphy ofthe transition beds between the Jurassic and the Cretaceous,based on microfauna).Kwartalnik Geologiczny,10(1):96-115(in Polish)
• Bosquet J.1852.Description des Entomostracés Fossiles desTerrains Tertiares de la France et de la Belgique.MémoiresCouronnés et Mémoires des Savantsétrangers,24:11-42
• Brenner P.1976.Ostracoden und Charophyten des SpanischenWealden(Systematik,kologie,Stratigraphie,Pal ogeographie).Palaeontographica(Abteilung A),152(4-6):113-201
• Butlin R K,Sch n I&Griffiths H I.1998.Introduction to reproductive modes.In:Martens K ed.Sex and parthenogenesis,evolutionary ecology of reproductive modes in non-marine ostracods.Leiden:Backhuys Publishers.1-24
• Christensen O B.1963.Ostracods from the the Purbeck-WealdenBeds in Bornholm.Danmarks Geologiske Unders gelse(R kke II),86:1-59
• Christensen O B.1968.Some deposits and microfaunas from theUpper Jurassic in Scania:with new species of ostracods.SverigesGeologiska Unders kning(Ser.C),Nr.632,Avhandlingar OchUppsater,rsbok,62(3):3-46
• Colin J-P&Dépêche F.1997.Faunes d’ostracodes lacustres desbassins intra-cratoniques d’age Albo-Aptian en Afrique del’Ouest(Cameroun,Tchad)et au Brésil:Considérations d’ordrepaléoécologiques et paléobiogéographiques.African Geosciences Review,4(2/3):431-450
• Colin J-P&Oertli H-J.1985.Purbeckien.In:Oertli H-J ed.Atlasdes Ostracodes de France.Bulletin des Centres des RecherchesExploration-Production Elf-Aquitaine,Memoir9:147-161
• De Deckker P.1977.The disribution of the"giant"ostracods(Family:Cyprididae Baird,1845)endemic to Australia.In:L ffler H&Danielopol D eds.Aspects of ecology and zoogeography ofRecent and fossil Ostracoda.The Hague:Dr W.Junk B.V Publishers.285-294
• Delorme L D&Donald D.1969.Torpidity of freshwater ostracods.Canadian Journal of Zoology,47:997-999
• Dunker W.1846.Monographie der Norddeutschen Wealdenbildung.Ein Beitrag zu Geognosie und Naturgeschichte der Vorwelt.
• Braunschweig:Verlag von Oehme und Müller.1-86(Ostracodap.58-61,pl.13)
• Elstner F&Mutterlose J.1996.The Lower Cretaceous(Berriasianand Valanginian)in NW Germany.Cretaceous Research,17:119-133
• Finger K L.1983.Observations on the Lower Cretaceous ostracodezone of Alberta.Bulletin of Canadian Petroleum Geology,31(4):326-337
• Funnel B M.1990.Global and European Cretaceous shorelinesstage by stage.In:Ginsburg,R N&Beaudoin B eds.Cretaceous resources,events and rhythms.Dordrecht:Kluwer Academic Publishers.221-235
• Gradstein F M,Ogg J G&Smith A G.2004.A Geologic TimeScale2004.Cambridge:Cambridge University Press.1-589
• Gramann F,Heunisch C,Klassen H,Kockel F,Dulce G,Harms F-J,Katschorek T,M nnig E,Schudack M,Schudack U,Thies D&Weiss M.1997.Das Nieders chsische Oberjura-Becken-Ergebnisse interdisziplin rer Zusammenarbeit.Zeitschrift derDeutschen Geologischen Gesellschaft,148(2):165-236(inGerman)
• Gobbo-Rodrigues S R,Petri S&Bertini R J.1999a.Ocorrênciasde ostracodes da Forma o Adamantina do Grupo Bauru,Cretáceo Superior da bacia do Paranáe possibilidades de correla o com depósitos isócronos argentinos.Parte I:FamíliaIlyocyprididae.Acta Geológica Leopoldensia,23(49):3-13(inPortuguese)
• Gobbo-Rodrigues S R,Petri S&Bertini R J.1999b.Ocorrênciasde ostracodes da Forma o Adamantina do Grupo Bauru,Cretáceo Superior da bacia do Paranáe possibilidades de correla o com depósitos isócronos argentinos.Parte II:FamíliaLimnocytheridae.Revista da Universidade de Guarulhos,4(6):5-12(in Portuguese)
• Green A J,Jenkins K M,Bell D,Moris P J&Kingsford R T.2008.The potential role of waterbirds in dispersing invertebrates andplants in arid Australia.Freshwater Biology,53:380-392
• Grekoff N.1953.Sur l’utilisation des microfaunes d’ostracodesdans la stratigraphie précise du passage Jurassique-Crétacé(Faciès continentaux).Revue de l'Institut Francais du Pétrole,8(7):362-379(in French)
• Grekoff N.1957.Ostracodes du Bassin du Congo,I.Jurassiquesupérieur et Crétacéinférieur du nord du bassin.Annales duMusée Royal du Congo Belge(Série in-8°,Sciences Géologiques),19:1-126(in French)
• Grekoff N.1960a.Ostracodes du Bassin du Congo,II.Crétacé.Annales du Musée Royal du Congo Belge(Série in-8°,SciencesGéologiques),35:1-69(in French)
• Grekoff N.1960b.Correlations et age relatif de quelques seriescontinentales Mésozo ques a ostracodes.In:Hessland I&Erdtman G eds.International Geological Congress-Report of theTwenty-First Session Norden1960,Part VI,Proceedings of Section6:Pre-Quaternary Micropaleontology.Copenhagen:DetBerlingske Bogtrykkeri.18-26(in French)
• Grekoff N&Kr mmelbein K.1967.étude Comparée desOstracodes Mésozoiques Continenteaux des Bassins Atlantiques:Série de Cocobeach,Gabon et Série de Bahia,Brésil.Revue del’Institut Fran ais du Pétrole et Annales des CombustiblesLiquides,22(9):1307-1353(in French)
• Griffiths H I&Horne D J.1998.Fossil distribution of reproductivemodes in non-marine ostracods.In:Martens K ed.Sex and parthenogenesis,evolutionary ecology of reproductive modes innon-marine ostracods.Leiden:Backhuys Publishers.101-118
• Hayashi K.2006.Nonmarine ostracode zonation and long-distancecorrelation based on analysis of regional ostracode successionsin China,Korea,Japan,and Mongolia.Cretaceous Research,27:168-188
• Helmdach F-F.1979.M glichkeiten der Verbreitung nichtmarinerOstrakodenpopulationen und deren Auswirkung auf diePhylogenie und die Stratigraphie.Neues Jahrbuch für Geologieund Pal ontologie,Monatshefte,Jahrgang1979(Heft6):378-384(in German)
• Hoedemaeker P J.1999.A Tethyan-Boreal correlation of Pre-AptianCretaceous strata:Correlating the uncorrelatables.GeologicaCarpathica,50(2):101-124
• Hoedemaeker P J&Herngreen G F W.2003.Correlation ofTethyan and Boreal Berriasian-Barremian strata with emphasison strata in the subsurface of the Netherlands.Cretaceous Research,24:253-275
• Horne D J.1995.A revised ostracod biostratigraphy for the Purbeck-Wealden of England.Cretaceous Research,16:639-663
• Horne D J.2002.Ostracod biostratigraphy and palaeoecology ofthe Purbeck Limestone Group in southern England.Special Papers in Palaeontology,68:53-70
• Horne David J.2003.Key events in the ecological radiation of thOstracoda.In:Park L E&Smith A J eds.Bridging the gaptrends in the ostracode biological and geological sciences.ThPaleontological Society(Papers),9:181-201
• Horne D J.2009.Purbeck-Wealden.In:Whittaker J E&Hart M Beds.Ostracods in British stratigraphy,The Micropalaeontological Society Special Publication3.London:The Geological Society of London.289-308
• Horne D J&Martens K.1998.An assessment of the imprtance ofresting eggs for the evolutionary success of Mesozoicnon-marine cypridoidean Ostracoda(Crustacea).Archives Hydrobiologica,Special Issues on Advanced Limnology,52:549-561
• Horne D J&Smith R J.2004.First British record of Potamocyprishumilis(Sars,1924),a freshwater ostracod with a disjunct distribution in Europe and southern Africa.Bolletino della SocietàPaleontologica Italiana,43(1-2):297-306
• Horne D J,Danielopol D L&Martens K.1998.Reproductivebehaviour.In:Martens K ed.Sex and parthenogenesis,evolutionary ecology of reproductive modes in non-marine ostracods.Leiden:Backhuys Publishers.157-195
• Hou You-tang1958.Jurassic and Cretaceous nonmarine ostracods ofthe subfamily Cyprideinae from north-western and north-easternregions of China.Memoirs of the Institute of Paleontology,Academia Sinica,1:33-113
• Hou You-tang&Gou Yun-xian2007.Fossil ostracoda of China,Vol.2.Cytheracea and Cytherellidae.Beijing:Science Press.1-798(in Chinese)
• Hou You-Tang,Gou Yun-xian&Chen De-qiong.2002.Fossilostracoda of China,Vol.1.Superfamilies Cypridacea and Darwinulidacea.Beijing:Science Press.1-1090(in Chinese)
• International Commision of Zoological Nomenclature(ICZN),1999.International Code of Zoological Nomenclature online.London,The International Trust for Zoological Nomenclature:http://www.iczn.org/iczn/index.jsp.
• Jenkins D G&Underwood M O.1998.Zooplankton may not disperse readily in wind,rain or waterfowl.Hydrobiologia387/388:15-21
• Jones T R.1885.The Ostracoda of the Purbeck Formation;withnotes on the Wealden species.Quarterly Journal of the Geological Society of London,41:311-353
• Jones T R.1886.On some fossil Ostracoda from Colorado.Geological Magazine,3(4):45-148
• Jones T R.1888.Ostracoda from the Weald Clay of the Isle ofWight.Geological Magazine,5(12):534-539
• Jones T R.1893.On some fossil ostracoda from S W Wyoming,and from Utah,U.S.A..Geological Magazine,New Series,Decade III,10(9):385-391
• Kaesler R L.1983.Usefulness of ostracoda:questioning a rule ofthumb.In:Maddocks R F ed.Applications of ostracoda.Houston:Department of Geosciences of the University of Houston.8-18
• Kaufmann A.1900.Cypriden und Darwinuliden der Schweiz.Revue Suisse de Zoologie,8:209-423(in German)
• Kempf E K.1980a.Index and bibliography of nonmarine ostracoda1,Index A.Sonderver ffentlichungen des GeologischenInstituts der Universitaet zu Koeln,35:1-188
• Kempf E K.1980b.Index and bibliography of nonmarine ostracoda2,Index B.Sonderver ffentlichungen des Geologischen Institutsder Universitaet zu Koeln,36:1-180
• Kempf E K.1980c.Index and bibliography of nonmarine ostracoda3,Index C.Sonderver ffentlichungen des GeologischenInstituts der Universitaet zu Koeln,37:1-204
• Kempf E K.1980d.Index and bibliography of nonmarineostracoda4,Bibliography A.Sonderver ffentlichungen desGeologischen Instituts der Universitaet zu Koeln,38:1-186
• Kempf E K.1991.Index and bibliography of nonmarine ostracoda5,Bibliography B.Sonderver ffentlichungen des GeologischenInstituts der Universitaet zu Koeln,77:1-238
• Kempf E K.1997a.Index and bibliography of nonmarine ostracoda6,Index A,Supplement1.Sonderver ffentlichungen desGeologischen Instituts der Universitaet zu Koeln,109:1-142
• Kempf E K.1997b.Index and bibliography of nonmarine ostracoda7,Index B,Supplement1.Sonderver ffentlichungen desGeologischen Instituts der Universitaet zu Koeln,110:1-134.
• Kempf E K.1997c.Index and bibliography of nonmarine ostracoda8,Index C,Supplement1.Sonderver ffentlichungen desGeologischen Instituts der Universitaet zu Koeln,111:1-152
• Kempf E K.1997d.Index and bibliography of nonmarineostracoda9,Bibliography C.Sonderver ffentlichungen desGeologischen Instituts der Universitaet zu Koeln,112:1-150
• Kempf E K.2002.Index and bibliography of nonmarine ostracoda9,Bibliography D(CD-ROM Edition).E K Kempf:http://ostracoda-on.tripod.com/
• Khand Y,Sames B&Schudack M E.2007.New ostracod speciesfrom the non-marine Cretaceous of Mongolia.Revista Espa olade Micropaleontología,39(1-2):71-80
• Kneuper-Haack F.1966.Ostracoden aus dem Wealden der Sierrade los Cameros(Nordwestliche Iberische Ketten).Beihefte zumGeologischen Jahrbuch,44:165-209(in German)
• Kornicker L S&Sohn I G.1971.Viability of ostracode eggsegested by fish and effect of digestive fluids on ostracodeshells-ecologic and paleoecologic implications.Bulletin duCentre de Recherches de Pau-SociétéNationale des Petrolesd'Aquitaine,5Supplement.125-135
• Kr mmelbein K.1962.Zur Taxionomie und Biochronologiestratigraphisch wichtiger Ostracoden-Arten aus der oberjurassisch?-unterkretazischen Bahia-Serie(Wealden-Fazies)NEBrasiliens.Senckenbergiana Lethaea,43(6):437-528(in German)
• Kr mmelbein K.1965a.Neue,für Vergleiche mit West-Afrikawichtige Ostracoden-Arten der brasilianischen Bahia-Serie(Ober-Jura?/Unter-Kreide in Wealden-Fazies).SenckenbergianaLethaea,46a(Weiler Festschrift):177-213(in German)
• Kr mmelbein K.1965b.Ostracoden aus der nicht-marinenUnter-Kreide(Westafrikanischer Wealden)des Congo-Küstenbeckens.Meyniana,15:59-74(in German)
• Kr mmelbein K.1966.On"Gondwana Wealden"Ostracoda fromNE Brazil and West Africa.Proceedings of the2nd West African Micropaleontological Colloquium(Ibadan1965).Leiden:EJ Brill.119-123
• Kr mmelbein K&Weber R.1971.Ostracoden des NordostBrasilianischen Wealden.Beihefte zum Geologischen Jahrbuch115:3-93(in German)
• Lopez L C S,Rodrigues P J F P&Rios R I.1999.Frogs andsnakes as phoretic dispersal agents of bromeliad ostracods(Limnocytheridae:Elpjdium)and annelids(Naididae:Dero).Biotropica,31:705-708
• Lopez L C S,Filozola B,Deiss I&Rios R I.2005.Phoretic behaviour of bromeliad annelids(Dero)and ostracods(Elpidium)using frogs and lizards as dispersal vectors.Hydrobiologia,549:15-22
• Loranger D M.1954.Useful Blaimore microfossil zone in centraland southern Alberta,Canada.In:Clark L M ed.Western Canada sedimentary basin,Ralph Leslie Rutherford MemorialVolume.Tulsa:The American Association of Petroleum Geologists.279-296
• Martens K.1998.Sex and ostracods:a new synthesis.In:MartensKoen ed.Sex and parthenogenesis.evolutionary ecology of reproductive modes in non-marine ostracods.Leiden:BackhuysPublishers.295-321
• Martens K,Horne D J&Griffiths H I.1998.Age and diversity ofnon-marine ostracods.In:Martens K ed.Sex and parthenogenesis.Evolutionary ecology of reproductive modes in non-marineostracods.Leiden:Backhuys Publishers.37-55
• Martens K,Rossetti G&Horne D J.2003.How ancient are ancientasexuals?Proceedings of the Royal Society of London(SeriesB,Biological Sciences),270:723-729
• Martin G P R.1940.Ostracoden des norddeutschen Purbeck undWealden.Senckenbergiana,22(5/6):275-361(in German)
• Martín-Closas C,Sames B&Schudack M E.2010.New charophyte assemblages from the Lower Cretaceous of the UnitedStates:palaeobiogeographic implications.17th Meeting of theGroup of European Charophytologists(GEC),Tallinn,Estonia,August26-27,2010,Program and Book of Abstracts:9
• McKenzie K G&Hussainy S U.1968.Relevance of a freshwatercytherid(Crustacea,Ostracoda)to the Continental Drift Hypothesis.Nature,220:806-808
• McKenzie K G&Moroni A.1986.Man as an agent of crustaceanpassive dispersal via useful plants-exemplified by ostracod"ospiti esteri"of the Italian ricefield ecosystem-and implications therefrom.Journal of Crustacean Biology,6:181-198
• Mojon P-O.2002.Les Formations Mésozo quesàcharophytes(Jurassique Moyen-CrétacéInférieur)de la marge TéthysienneNord-Occidentale(SE de la France,Suisse Occidentale,NE del’Espagne),Sédimentologie,micropaléontologie,biostratigraphie.Géologie Alpine,Memoire H S,41:1-386
• Moura J A.1987.Biocronoestratigrafia da sequência n o-marinhado Cretáceo Inferior da bacia de Campos,Brasil:Ostracodes.In:Anais do XI Congresso Brasileiro de Paleontologia,2,1987.Rio de Janeiro:Sociedade Brasileira de Paleontologia(SBP).717-731(in Portuguese)
• Musacchio E A.1971.Hallazgo del genero Cypridea(Ostracoda)en Argentina y consideraciones estratigraphicas sobre laFormacion La Amarga(Cretacio Inferior)en la Prov.deNeuquen.Ameghiniana,8(2):105-125
• Neustrueva I Y,Sinitsa S M,Khand Y&Melnikova L M.2005.Paleontologia Mongolii.Posdnemesosoiskye i PaleogenovyeOstrakody.Moskva:Nauka.1-166(in Russian)
• Nikolaeva I A&Neustrueva I Y.1999.Ostrakody Mesosoa(Practical Manual on Mikrofauna-Mesozoic Ostacoda).St.Peterburg:VSEGEI Press.1-184(in Russian)
• Nye E,Feist-Burkhardt S,Horne D J,Ross A J&Whittaker J E.2008.The palaeoenvironment associated with a partial Iguanodon skeleton from the Upper Weald Clay(Barremian,EarlyCretaceous)at Smokejacks Brickworks(Ockley,Surrey,UK),based on palynomorphs and ostracods.Cretaceous Research,29(3):417-444
• Oertli H-J.1963.Ostracodes du"Purbeckien"du Bassin parisien.Revue de l'Institut Francais du Pétrole et Annales desCombustibles Liquides,18(1):5-40
• Palmer A R.2004.Symmetry breaking and the evolution of development.Science,306:828-833
• Pang Qi-qing.1982.Ostracoda fossils from Middle-Upper Seriesof Jurassic System in Yanshan Range,Hebei Province,and theirstratigraphic significance.Journal of Hebei Colleg of Geology,(New Series),1/2:89-110(in Chinese)
• Peck R E.1941.Lower Cretaceous Rocky Mountain nonmarmicrofossils.Journal of Paleontology,15:285-304
• Peck R E.1959.Stratigraphic distribution of Charophyta and nonmarine ostracods.In:10th Annual Field Conference Guidebook,Wasatch and Uinta Mountains.Intermountain Association ofPetroleum Geologists.115-121
• Peck R E&Craig W W.1962.Lower Cretaceous nonmarine ostracods and charophytes of Wyoming and adjacent areas.WyomingGeological Association Guidebook,17th annual Field Conference.Casper:Wyoming Geological Association.33-43
• Proctor V W.1964.Viability of crustacean eggs recovered fromducks.Ecology,45(3):656-658
• Proctor V W,Malone C R&DeVlaming V L.1967.Dispersal ofaquatic organisms:viability of disseminules recovered from theintestinal tract of captive killdeer.Ecology,48(4):672-676
• Queiroz Neto J V de,Colin J-P&Sames B.2010.Kegelina nov.gen.,new limnic ostracod(Cyprideidae)from the Lower Cretaceous of Brazil,West Africa and North America.La23èmeRéunion des ostracodologistes de langue Fran aise(ROLF),May6-82010,Tunis,Tunisia.41-42
• Sames B.2008.Application of ostracoda and charophyta from theLate Jurassic to Early Cretaceous Tendaguru Formation atTendaguru,Tanzania(East Africa):biostratigraphy,palaeobiogeography and palaeoecology.Palaeogeography,Palaeoclimatology,Palaeoecology,264(3-4):213-229
• Sames B.2010.To correlate or not to correlate―That isnot thequestion anymore!Continental Late Jurassic to Early Cretaceous supraregional correlation based on freshwater to brackish-water ostracodes.Palaios,25(1-2):3-5
• Sames B.2011a.Early Cretaceous Theriosynoecum Branson1936in North America and Europe.In:Sames B ed.Taxonomicstudies in Early Cretaceous nonmarine ostracoda of NorthAmerica.Micropaleontlopgy,57(4-5):291-344
• Sames B.2011b.Early Cretaceous Cypridea Bosquet1852inNorth America and Europe.In:Sames B ed.Taxonomic studiesin Early Cretaceous nonmarine Ostracoda of North America.Micropaleontlopgy,57(4-5):345-431
• Sames B.2011c.Glossary of morphologic terms of late Mesozoicnonmarine Outraced,relevant to Theriosynoecum Branson1936and Cypridea Bosquet1852.In:Sames B ed.Taxonomicstudies in Early Cre