Upper Maestrichtian coccoliths of the Lublin Upland

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Vol. 25, No. 3

ELZBIETA GAZDZICKA

" 0" ~j.ZO ":;ZCZl

' .. ~ ,Ql iIt:H'~ i C0i'3

Warszawa 1975

Upper Maestrich tian coccoliths of the Lublin Upland

ABSTRACT: The Zyrzyn Beds (Upper MaestricMian) of the Lubldn Uplaind yield a r,iclh and well-·p«"eseI'ved alSlSemblage of calcareous nan'IJJOplan.:kton jn wh:i,ch 54 oocco1i:th 'species be1on~g to 34 'genena were identi,fied by the SEM method. The r.ecognized as:SIembLage :is typical of .the ooooolith zone Nephrolithus frequens of the

uppeT'IllJOSJt Ma.es tlrdch 1l1aal.

INTRODUCTION

The Upper Maestrichtian of the Lulblin Up{and yields very rich and well-p.f1€'SeT'V'ed ocalcarreows nannop'lalllktion (vide G6rka 19'57, 1963) . .This gI'9up {)If mi'crofossils recently !became the subject of remarkable interest due to the SEM analyses and due :to .redogmtion of the stratigra'phic value of coccoliths. The author sturdliedthe seqw€Ill'oo of the Zyrzyn 'booehote and, for oampalra1J:ive pu:ripOIS€IS, siin:gle samples of COII"e material :fu:om the Zem'barzyC€ land fudole hOl'ehol,es (cf. Figs 1-2). Some ooccoliths were p:I1eviously descrihed from the Zyrzyn borehole by GOrka (19-63) as Cribrosphaera ehrenbergi, Kamptnerius magnificus, Nephrolithus fre- quens, or ulllder other names (Chiastozygu$ litterarius, Loxolithus armilla, Prediscos-phaera cretacea, Prediscosphaera spinosn

aIlld

Staurolithites crux).

The atnalysis of oocooliths was camed out with the use

of

Oiptical miocrosoqpeand soom1ing ;ellectron mi'crosoope JEOL JSM-Sl. 'Dhe material was 'Prepared rfoHowmg the prlooedooe !proposed by Perch-Nielsen (1'968) and illlvnlvmg ultTaoonic and cenJtlrifuging treatments.

Itn

the identificlo.

atiOllllS, all the reoontly 'PU'blisihed papers Olll Creta'ceous 'ooocoIJitbs were taken into acoounrt; (Braml,ette

&

Ma:rtin!i. 1964; Reinhardt 1965, 1970a, b, 1971; StQlVler 1' 966; ReiJnJhardt

&

G6rka 19i67; Gai rtner 1968; Perch-Nielsen 1968, 191 6'9, 191'72; Bukry 1969; Farimcd 1969: ; Shumenko 1969; Noel 1969,

1970; MaIll'ivit 1971; Shafik

&

Stradner 1971; Priewailder 1973).

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408 EL2BIETA GA2:nzICKA

F1ig. 1

Location of borehdles sampled for Upper MaeSlt.r:iJC'hrtian ·ooccoliths in the Lub1ilIl Upland (the inset shows posiltiioln of the area in

Pomd)

COCCOLITH ASSEMBLAGE

The ma<tertial studied js very rich, both in number of species and individuals.

It oomprJ.ses 54 species Il'epresen'ting 34 genera. A<lOOrding to the systematics proposed by Noel (1970), UlPper Maestrkhtian sbrata IOf the Lublin Upland yield representatives of the famildes:

r--r -

Ib c::

<:>

Q) t:>,

'"

~

...

t:l _~

":> <> <>

-

^f--~

.!:;? c::

c:: t:l

L:::l

Q)

§

" "'i

""

c:: _~

.t:l -i:: ~

-S

^Q)

'

..

^~

.t:

_~

~

~ ^:§^-...;

'"

<..

~ ^...c::

~ ~ ~ ::::;

!

IT.!.,I

Marl IvlvlOpoka

f:·:J:.:·1

Gaize ')JV1 Ifardgro

m .::.J: ... : >::.

96 ;1:'.:-1:\'.:.;1':

" . : •••• " t', : ~ ~

100 v Iv IV

IrH _{lYlv Iv} vi vTvT 108 IvlvTv 112 v v ^v

v v V

116 Y.V~I~·I

v v v 120 ^v ^v

=e~

124 v v v v 128 v ^v v

I.md

!--

•

^~_~

~ ~

•

^.~

• •

•

Zygol111h.aceae Noin, 11965

;pooarbaJbida;ce.ae 1N~1, ru965 A;rkhangelSk!eil1aJceae 'BukTy:, 1969 StepJ:t:aJloollothd.cmaceae B'1ac.k; 1968

·OoocoILithaJceae Kaanptner, 1928 MiarorhalbldluiLaooae DefliaJnJdJr~ 11963

as weLl as Otf oSeVeral i'llCertae-sedis genera:

Lucianorhabdrus Deflandre, 11959 MarthaBterttes [)ef1aaJid.re, 1!r59 Mtcula VeIkIs1hiiJna, 11959

Rhombooster Braande-ete &: SUllUvam, 1981

Tetral~thus 'GIIir.det, 11955.

FUg. 2

Investilgated illlterval of the boreho1e Zyrzyn, Lublin Upl:and, representing ldrthologi.cal sequ- ence at th,e Upper Maes'trichtia.n/Da.ruian junction

(sam.plilng sites &'e mlill'ked by black dots)

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UPPER MAElST'R.lCJIT.:DAN COOCOoLLTHS OF THE LUBl.JrN UPlLAND

All the species iidentif.ied are adequately described in. the liter'a'liul'e, so ooly theill" list (Table 1) and SIQIIlle mdcrographs (Pls 1-8) are given here.

Table 1

Coccold.th species of the uppermost Maestrichtian in the LubllilIl Upland

AhmueUen!Ua octOT'acU.ata ·(Gwka) Red'lllha:dJt - !PI. 5, Fd·gs Sa" 4a Arkha'll.geLsk~ta cymbifOTmts Vek$hl.D:la - PIl. El, FiLg. 3

ArkhlbngetskteUa disUncta Shume!IJk,o - 1PI1. 7, Fdg. 3b Arkhangetsktelta ethmopom BuIka'y - PI. 6, Fdg. 4

ArkhangeLskieUa speciUata VeIkshi!na - iPI1. 1, Fig)S 3a, 4 and Plo 6, FJgs ~-2 Btscutum consrons (G6rka) B1t31Clk

Biscutum testudt7KllT1.um B1aIC!k Broinsonla bevt.ertBUlkTy

Chlastozygus amphipons ('Bramlette & iMa.r1tiiJni) GIaortmer Chia.stozygus tttterartus ~Gwlka) Manivdit - 'PI. 4, 1Fi.gs &-4 Cocco!ithites dentatus SbUllIlenko

Corottithion exiguum strndner

CoroUtLthton r'hombicum {Stradner & ml.) Bulkry Crebarhabdus COI'!I!c'US LBl-amJette & M.aT1lilni Cretamabdus crenutatus iBlI'smdette & Ma::ot'lmli

Crtbrosphaera ehrenbergi A;rk.h.a~y - PI. 1, )Fdg. lib and Pl. 5, Fig. 1 Etffe!ttthus regularill (G6rlka) Perctl-Nielsen

Etffelttthus tu rrt.setI.ffe!t «Detlarui;re) lReIiJnhaa'dt - IPO.. 7, Fig. 2 Gartnerago obttquus (ReilIlha.::dt) Neel - 1"1. 7, Fig. 4 KamptneTius magntftcus DefLalndre

Kamptnertus perc1.il1alti lBu!lay - IPIl 7, Fj,g. 1 Lithraphidf;tes carnio!ensts DeflLa;ndre - PIl. 5, Fdg. 4b Ltthraphutttes grossopectinatus Bukry - PI. 5, Fig. lib Lithraphtdites quadmtus Bratn:lette & !M.arrtdJnd - FIL. 8, Fig. la Loxotithus armitta ('Bl.acIk & Bari11es) Noel·

Lucianorhabdus oayeuxi Defland!re

Marka.!tus inversus ([)ef'landre) B'ramle<tte & Marti!Illi Marthastertte.s fUTcatus D~lai11dre

MartJhasterttes tnconsptcuus· Def1alIldre

Mtcrorhabduiwl attenuatus (DefIlaJI1Jdre) DeflLamre Microrhabdulus betgicus

Ha. y

& Towe - iPl. 8, Fig. 4 Mtcrorhabdulus deooratu8 DeJUl!IJIKl're

Mtcrorhabdu!us stractne,rt BrIamlette & MarttLnJi

Micuta decussata Vekshdna - PI. 1, Fig. 3Ib am PI. 8, Fig. 2 NephroLithus frequens G6rka - Pl. ~, Fig. 2 IIIIl.d PI. 5, Fig. Za parhabdotithus bispiratisN06l

PQdorhabdus dietzmannt (Redllllharot) iReinha'l'ldt Podorhabdus orbicutofenestrus (Ga;rt.ner) ThierBteLn

PrecU.scos:phaera cretacea ~AIrJkh,a.nge'lskiY) - .IP!. 11., Fig)S La, ~; PI.. 3, FLgs ~ and PI: 5, Fdg. :Ob>

Prooiscosphaera spinosa (oBramlette & !M.artd'Ili) Gartner ....: PI. 3, Figs 1-2 a·nd Pl. 8, Fig 3b RhllJgodiscus ptebeius Pereh,.INdelsem -FIl. ~, Flg. ~

RhombOaster cuspis B'ratml.ebte & Mall':tllnd

StauroUthites crux (Deflai11d..re & Fert) call'at\lJni - PI. 2, FIg. 4 Stephanol.ithi01l. !afftbet N061

Tetra.!tthus ObSCUTUS ~e Tetra!ithus pyramidus GaTdet

Thorac08pha.era opercutata BI ... "mJette & Martin!

Tremattthus tgnotus Gfuika

Veksnine!ta e!tiptica Gartne;r - pJ.. 2, Fi,gs J.-2

VekshineUa 9triata {Stra.dner) Plrdew.alde;r - PI. 4, Fdg. 2 Watznauerla barnesae (Bla,ck) BuikII'y

ZygexUscus spiratis Bra'IIllletote & Marti'Ili - PII. 2, Fj,gs 5-6 ZygoLithus bussoni Noi!:l

Zygotithus crucifer Noel - RI. 2, Fdg. 3

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410 ELZBIEITIA. GAZnZICKA

The :frequency of the s·pecies iJl1 ,the material studied is diverse. There is diSltiinct prediomilnan,ce of the representatives of Arkhangelskiella cymbiformis Vekshin,a, Chiastozygus amphipons (Bramlette & . Martind), Cribrosphaera ehrenbergi Arkhangelsky, EiffelUthus turriseiffeli (Deflamdre), Micula decussata Vekshillla, NephroLithus freque1!8 G6,rka, Prediscosphaera cretacea (Arkham.gelsky), P. spinolfa (Bramlette & Maa-:tini) and Zygodiscus spiralis Bramlebte & Marrtm. Theoontr~butlon

of the remai!l1ing sp€cies is markedly subordinate.

STRATIGRA·PHY

The Mghest Upper Ma-estrichtiarn strata of ,the Zyrzyrn. lbore'hole were named by PoZar ryska

(1965)

as the "Zyrzyn

Beds"

and dated ' on the basis of

:f.oreminifers

as the uppeT'lllost Maestrichtian. Thls ag' e a'ssignment is supported by the :r!eISUlt

of

the noonoplank,ton analySis. The coocoHth assemhla'ge a1Ppearrs tylpical

of

the U:pper MaestrichtialIl ooocolith zone Nephrolithus frequens, defIDed by

C'€!p€Ik

& Hay

(1969,) IaS

the interval between the first appearance of N. frequens and the time of

e~ctiOin

of the majority

of

Late Qve1Jaoeous sp. ecies. The Zyrzyn profile displays the upper boundary of this zOlIle. The boundary ooincides with the upper bournda' IY rod: r the "Zy:rzyn Beds" and,

~t

the same time, with the Oretace- ouslTertiaTY boundary. The lower houndary of thi's

~one was·

not recog- nized as the species

N.

frequens

is

' PTesent in the lowermost part of the prorfrl.le, :be'Low the lbase of the "ZYTZyn Beds".

Same

diff€lI"eIlICesin

the oolll1jpOSition of the

cocool:iith

assemblage were found through the

seqUelIlce.

In its lower part, UIIldedying the "Zy-

IZyn

Beds" (depth

126.1-116.1

m), .the assemblage appealI\S to be most .diversif1ed, as it

OOlI1GJr'iJses

,the majority of Late Crotai ceous ' species.

including I"elic Campanian and olderr io[TIl;S: Broinsonia bevieri Bukry, Coccolithites dentatus Shumenko, Corollithian rhombicum (Stradner), Kamptnerius percivalii Bukry, Gartnerago obliquus (Reinhardt) and Vekshinella elliptica Grartnerr. The "Zyrzyn Beds" display certain impo- verishmelIlr1; of the La: te Cretaceorus forms (and primarily decrease in the

number

of

speCies)

and the first appearance of Paleocenie species such as Markalius inversU$ (Deflandr.e) and Thoracosphaera operculata Bramlette

&

Martini.

Samples from the Zemlborzyce and POOole boreholes (depths 74.85

and 53.71 5

lID, (l'I~ectively),

ar m reprresen.t

strata of

the Nephrolithus

frequens Zone, which

is

indicated by rt!he compositiron of cocoolith assem-

blages. The samples from the Zemborzyce and Podole 'boreholes may he

cor;r:elated with the lowerrmost

part of

the Zyrzyn proii1 ^r e, 'Older tharn the

Zyrzyn Beds

(cf.

Fig. 2).

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UPPER MlAEiST'RDCHTJlAiN COOOOLllI'HS OF THE LUBLlN UPILAiN'D 4'11

FINAL REMARKS

The coooolith ass1emblage that occurs in Upper Mal estrkMian strata of the Lublin Upland appeail"S identical to those known flOOm Austria (Pdewalder

1'9'73)

and New Z,ealand (EdwardlS

1971). On

the basis of coocolliths, the stmta may alro be correlated with the Upper Ma,estrichtian .of Denma'1'k {cf.

P.erch-N~elsen 1968, 1;9~9),

West GeI'lffiany (cf. Cepek

19'70)

,and Dnepr-Don,etz l'egllion

of

USSR

(cf.

Shafik

&

Stradnoc

1971).

The anal)7lSis iOf the oolIlillopLarnkton

ma~es

it alJslo possiblte t,o re- construct the environment of depositionOif Late Maestr:tchtian strata from the Luiblin Upland. The assemblage is rich both in numher of species and individuals, which suggests deposition 1n lop en marine basin of the oceanic type 10'1' with gOlodseaway 'OO!IlD.€ctiQns with the 'Ocean,

in

'WW'm waters of nQrma!lsalinity, well I(}xida:tJed and d , ear.

The distributiQn

of

Recent Cocoolithophoridia T1eveaIs a zone of maximum O'1'gantic iIJII'Oductivity, ootnnected with the boUl1lda.ry of sub- tropioal and moderette climatic be1ts (Mclntyre

&

Mdntyre

1971).

Regaroing paleogeography, the ,existence Oif a province characterized by a specific, ridh lOaiIIDOplall1lk:ton ass,emblage maybe werred. This provinoe occupied Poland, SIOuthern

pM'ts of

USSR, Austria, Demna,rk, West Oerrmany, Netherlands alIld Be!lgium, being dependent on the distrihtition

of

oceanic basins and oontinents, as well as on diIDalte. Its, cQun:terpart is also reoognizable in the southern he'n'risphel'e, in New Zealand.

Acknowledgements. Warm thanks are due to Docent H. G61l"ka lior help in idelntifkatd'on of coc'coliths, and to Doc€lnt A. Radwanski 'and Dr. P. S. Boyer for- va'luable suggestions and critical commeIllts on themalIllUscxj.pt.

Institute of GeoLogy of the Warsaw University

Al. 'ZWirki i Wigury 93, 02-089 Warszawa, Poland Warsaw, March 1975

REFERENCES

BRAMLETTE M. N. & MARTINI E. 19'64. The great chan'ge in calcareous nannoplankton foslsiLs between the Ma,estirichtJian and Danian. Micrapaleontology, 10 (3),291-322. New York.

BUKRY D. 1969. Upper CretaJceous coccoUths :firom Texas and Ew-ope. Univ. Kansas- Palermt. Crmtr., Art. 51 (Proltista 2), 1-79. Kansas.

CEPEK P. 1970. Zu[" V€Il"'tica,lverbreitung 'VlonCoccolithen-Arten in der Oberkreide NW-Deu1schlands. Geal. Jb., 88, 235-264. HaIIlJI1over.

& HAY W. W. 1969. Calcareous naJllltlop.lankton and biOSlUratilgraphic subdi- visdon of the Upper Oreta<!'OOus. Trans. Gulf Coast Ass. of Geol. Soc., 19, 323- 33'6.

EDWARDS A. R. 1971. A oalooreous IIW.nilloplankton zonation ·of the New Zealand Paleogene. In: A. FARINACCI (Ed.) Proceedings c:Jf the II Pla.nktonic Con- ference, Roma 1970. Vo!. 1, 381-419. Roma.

FARINACCI A. 1969. Catalogue of calcareous nannofossils. Vol. 1-;21. Edizioni

Tecno~cienza. Roma.

(6)

412

-GARTNER S. 11968. Coccolliths aIIld related cale.areous nannofosstils funm Upper Cretaceous depiOSits of TexBoS 'and Alr>karusas. Univ. Kansas Pa~eont. Contr., Art. 48 (lTotista 1), ·1-56. Kansas.

G6R'KA H. 1957.

Les

Ooocol'ithophocldes <iu Maestrichtien superieur de Pologne.

Acta PaZaeont. Po~., 21(2-3), 235-284. Warszawa.

:1963. Coooolithophorddes, Dmoflagellks, HystrichoSiphaerides et Illlicrofossiles i1ncertae Soedis du Cretaoe superdeur de ·Pologne.Acta PaZaeont. PoZ., 8 (1), 3-90.

Warszawa.

lVIANIVIT H. 1971. Nanoofoosiles calca:ires du cretalOl! fralIlca;is(Aptien-Maes.tricht- ien.) Essai de Biozonation appuyee sur les Stratdtypes. These, 1~1\817. Orsay.

McINTYRE A. & McINTYRE R. 19'7:1. Ooccolith oolIllCeIlbratioonsan<i diffeoc-ential solution lin 'Oceanic sedlimen:ts. In: B. M. FUNNEL & W. R. RIEDEL (Eds) The micropaZeontoZogy of oceans, 253-261. UlIliiversity Press. Cambddge.

NOEL D. 11969. ArkhangeZskielZa (,ooooolithes cre1aces) et formes affdJnes <iu Bassin de Paris. Rev. MicropaZeontoZ., 11 (4), 191-.204. Pads.

- 1970. ODCe'Ollthes aretaces. La araie campaallienme du Bass-in de Paris. Ed. C. N. R. S., 1-129. Pal'1i,s.

PERCH-NIELSEN K. 1968. Der FeiJn,bau I.lIl1d diile KlassifikatilOlnder Ooooolithen aus

<iem Maastrichitioo Vloo Danoemark. Kong. Danske Vidensk. Se~sk., Biol. Skr., 16 (1), 1-.£16. K0IbenhaV'll.

1'969. Die Ooccolithen einig€ll' lYcinis-cher Maastriohtien- ·\lJlld Danien1iO'kaLitiiten.

Medd. Dansk GeoZ. F·oren., 19 (1),51-68. Kebenhavn.

1972. Rema'l'ks on Late Q-etac€JOrus to P1edstocene cocool!iths fll'OID the North Atla:ntie. In: A. S. LAUGHTON, W. A. BERGGREN & aL Initia~ RepOrts of the Deep Sea Drilling Project, Vol. '1~ 1003-1069. WaschmgtOlll.

P02:ARYSKA K. 1960. Foramilllifera andoo05tretigraphy of the Dand·an IaJIlid Mrootian in Poland. Pa'~ae<mt. PoZ., No. 14, 1"';:156. Waxszawa.

PRIEW ALDER H. 1973. Die Oocool!ioth'Olphoodenflora <ies Locus typiollLS ViOIJl Pseudo- ,textuZaria eZegans I(Rzehak), ReiIllg!l'uberhohe, Niedell'Oslterl'1eic:h; .(Maastricht).

Jb. GeoZ. B.-A., 116, 3-<34.WJen.

REINHARDT P. 19615. Neue Familien. fUr foQlssile Kalkflagellaten (Coecolsith'OphOll'liden, Oocooldthineen). Monatsber. Dt. Akad. Wiss., 7 (1), 30-40. Berlin.

'197Oa Synopsis der Gatt\lJllgen und

Arten.

der meso:z.oischen Ooccolithen und anderer kaUci:ger Nannofoosilien, Teil 1. Freiberger Forsch.-H., C 2160, 5-30.

Leipzi,g. .

1970b. SY'nopsis de(l' GattUilLgen \lJlld Artend-er me.oo.zoischen Cocoolith€1Il und ande!l'er kalkJiger NaillIIl'of.ossiilien, TeiJ. 2. Freiberger Forsch.-H., C .265, 43-94.

LeipZJig.

119711. Synopsis der Gattungen u:nd AIl'ten ·der mesozoischen CoccolHhen un.:!

alIltdell'er kalkiger NBIIlJIlDilOlSSdHen, Teil 3. Freiberger Forsch.-H., C 267, 19-41.

Lei!pZ'ig.

1& G6RKA H. 100'7. RevisQOO ,od' some Upper Oretaceous coccolsiths from Poland md Germ8lIliY. N. Jb. Geo~. PaZiiont. Abh., 129 (3), 2140-:-256. Stuttgart.

SHAFIK S. & STRADNER H. 19711. Nannod'<OO&i:lis from the Eastern Desert,Egypt, mbh refeoc-ence 110 Maaslbrdchtialn n.arunofoss:ils fuxml the USSR. Jb. GeoZ.

Bundesanst., Sonderband 17, 619-104. Wien.

SHUMENKO S. 1. 1969. Elektl'on miCll'osoopic studdes of SiOme Late Cx-etaceous cocooJiths otf the R~an Platform. PaZeonto~. Zh., No. 2, 3-14. Mookva.

STOVER L. E. 1966. Cre'taooous OO<Xlolliths and assoc:iated na'llllllod'ossdIs from France, and the Netherlands. Micropa~eontology, 12 (2), l~lm. New Y'O'l'k.

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ACTA GEOLOGiICA POLONICA, VOL. 25 E. GAZOZICKA, PLo 1

1 a - Prediscosphaera cretacea (Ark'hangelsky), siide view; b - Cribrosphaera ehrenbergi Arkhal!1g.elsky.

2 NephroUthus frequens G6rka; dis·taiJ. view (at eenter).

3 a - Arkhangelskiella specillata Vekshiilla, proximal view; b - Micula decussata Vekshlna; c - Prediscosphaera cretacea :(Al'1khangeisky).

4 Arkhangels·kiella specillata VeksMna, ddstal view (at canter).

All specimens ·from the Upper Ma,esilmichtian, Zyrzy,n bOTeoole; X 2'7(}O

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ACT A GIEOI.;()G!ICA POLONICA, VOL. 25 E. GAZDZICKA, PLo 2

1-2 VekshineHa elliptica GaJrtner: 1 - d-ilSltal view, 2 - pl"oxdmal 'View of another specimtm.

3 ZygoUthus crucifer Noel, pToximal view.

4 Staurolithites crux '(Deflandre & Fert).

5-6 Zygodiscus spiralis Bramlette & MartLnd: 5 - distal view, 6 - proximal view of another specimen..

All specimens from the Upper Maesmchtian, Zyrzyn bore hole; X 9000

(9)

ACTA GEOLOGIJ;CA POLONICA, VOL. 25 ~. GAZDZICKA, PLo 3

1-2 Prediscosphaera spinosa (Bramlette & Marrtini).

3-6 Prediscosphaera cretacea (ArkhalIl.lg,elsky), various specimens: 3 - proximal view (X 54(0), 4 - proximal view, 5 - d~stal wew, 6 - side V'iew.

All specimens from the Maestrkhtian, ZyrzYIIl borehole; X 9000 (except for Fig. 3)

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ACTA GE)QlLO-G~CA POLONICA, VOL. 25

1 Rhagcdircus p~ebeius Perch-Niels€iI1, proximaI view.

2 Vekshinel/.a striata (Sllradnerr), proxdmal view.

E. GAZDZICKA, J'iL. 4

3-4 Chiastozygus litterarius (Golrka): 3 - dlistall view, 4 - pr·oximal V'iew of another- specimlen.

All ~pec-imens from the Upper Ma€strichtialll, ZYTZyn bo:rehol1e; X 9000

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A:CTA GJ;)OLOG>:'CA POLONICA, VOL. 25 E. GAZnZlCKA, P,L. 5

1 Cribrosphaera ehrenbergi A'rkhangelsky; Upper Maestrkhtian, P.odole borelrole;

X 9000.

2 a - Nephrolithus frequens G6rka; b - Prediscosphaera cretacea (Arkhangelsky);

Upper Ma estrich ti aon , Zyrzyn bOtl'ehole; X 9000. . 3 a - Ahmuellerella octoradiata (G6·rka), side view; b - Lithraphidites grosso-

pectinatus Bukry; Upper Maestrioehtiall1., ZyrzYll1 borehole; X 5400.

4 a - Ahmuellerella octoradiata o(G60rka), dis·tal view; b - Lithraphidites carnio~ensis

Deflandre; Upper Maestrkhitian, Zyrzyn ·boceho.loe; X 9000.

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A.CT A GEOiLOGDCA POLONICA, VOIL. 25 E. GAZDZICKA, PL. 6

1-2 ArkhangeZskiella speciZZata Vekshd:na: 1 - proximal view, 2 -distal view of another specimen; Upper Maestrichtian, 2:yrzyn borehole; X 9000.

3 ArkhangeZskieZZa cymbiformis Vekshina; Upper Maestrkhtian, Podole borehole;

X 5400. .

4 ArkhangeZskieZZa ethmopora Bukry; Upper Maestrichtian, 2:yrzyn borehole; X 9000.

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,A,CT A GEOLOGlJCA POLONICA, VOL. 25 E. GA2nZICKA, PLo 7

1 Kamptnerius perc.ivalii Bukiry,. X 5400.

2 EiffeUithus turriseijj.eli (DeflaJIldre).

3 a - Rhagodiscus sip., p!OOXiimal view; b - Arkhangelskiella distincta Shumenko, prox1ima'1 view.

4 Gartnerago obZiquus (Reinhardt).

All specimeJ!l'S from the Upper Maes:brkhif!ian, Zya-.zyn borehole; X 9000 (except for Fig. 1)

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AJcr A GEQLOG;]CA POLONIICA, VOL. 25

1 Micula aff. decussata V~kshina, X 27100 (an-owed).

2 Micula decussata V'e'kshdina, X 5400 (lettered a).

E. GAZDZICKA, PLo a

3 a - Lithraphidites quadratus BramIette.-& Martini; b - Prediscosphaera spinosa (BramIette & Maxtind); X 54100. .

4 Microrhabdulus belgicus Hay & Towe, X 9000.

All specimens from .the Upper Maestrichtian, Zyrzyn borehoIe

(15)

UPPER M1~CHTJ!AN COOOOLLTHS OF THE LUBI.lIiN UPLAlN'D 413

E. GAZDZICKA

KOKKOLITY GORNEGO MASTRYCBTU WYZYNY LUBELSKIEJ

(StreszC2le7lie)

PrzedmiJOtem pracy s/il kokkoli!ty z utwor6w g6rnego mastrychtu Wyzyny

Lu-

belSlltiej (pOT. rfig. :1). Szcz,eg6ilnde liiczny i dIObl'ze zachowany nannoplankton wapienny znaleziono w materlirale pochodz/ilcym z wieree:ruia Zyrzyn (pOll'. fig. 2.), w kt6rym rozpoznan.o 54 'gIa'tunkii kJoikIlroLiJt6w naJ.eZllee do 34 rod:za.j6w (POl/'. taJb. 1 iOIl'az pI. 1-8).

An:aliza zespolu 'kdkklolilt6w ~oma na; stw.i.'erdzen!i:e przynallrinoSoi badooych UitW'Cllr6w do ZIOI!lY lIrokkloili:to~j NephroUth1l.8 jrequens, 'O'raz na przeprowadzenie korelacji z r6wnO'Wi,emwymi utworamd Eulropy .i niekt6rych obszar6w pozaeuro- pejSik:ich.