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CONSEIL PERMANENT INTERNATIONAL P O U R L’EXPLORATION D E LA MER FORAMINIFERA Zooplankton Sheet 108 Families: Globigerinidae and Globorotaliidae (BY A.W. H. Bk)* 1967 * ) Lamont Geological Observatory of Columbia University, Palisades, New York. Contr. No. 982. This study received support from National Science Foundation, Grant GB-42 19. -2PLANKTONIC FORAMINIFERA There are about 30 described species of planktonic Foraminifera living in the world oceans. They occur primarily in the euphotic zone. The few deep water-species probably spend their earlier stages in near-surface waters. Most of the species (22) are tropical-subtropical; five are coldtemperate or subpolar species. Three species are found in Antarctic waters and of these one is also present in the Arctic Ocean. The IndoPacific fauna except for its greater species diversity, is essentially similar to that of the Atlantic. (1962). The presence or absence of spines is a major The classification and key used here agrees in most respects with that of PARKER criterion in distinguishing the two families. The morphological terms in this key have been defined in a publication by BOLLI,LOEBLICH, (1957). and TAPPAN Order FO-RIDA Family Globigerinidae CARPENTER, PARKER and JONES, 1862 Description (after PARKER, 1962): Test trochospiral in the adult or in ontogeny, streptospiral,or globular; chambers spherical, ovate or clavate; wall calcareous, perforate, radial in structure, hispid, spinose when living either in the adult or in ontogeny ; primary aperture umbilical, umbilical-extraumbilical,equatorial or spiroumbilical; may have secondary apertures; may have bullae with accessory infralaminal apertures. I927 Family Globorotaliidae CUSHMAN, 1962): Coiling of test trochospiral; chambers angular to ovate or spherical; may have a keel; wall Description (emended from that of PARKER, calcareous, perforate, radial in structure, smooth, pitted; non-spinose when living both in the adult and in ontogeny; primary aperture extraumbilical-umbilical or umbilical ;no secondary apertures. KEY TO GENERA 1. Trochospiral test (spines simple, if present). ............................................................................ 2 1. Planispiral test with triradiate spines (gerontic stage streptospiral) ................................................ Hastigerina 3 2. Primary aperture (and, if present, secondary apertures). .................................................................. 2. Sutural apertures,smooth surface ............................................................................... Cana'eina 3. Non-spinose tests ............................................................................ 4-6 Family Globorotaliidae 7-10 Family Globigerinidae 3. Spinosetests ................................................................................ 4. Test with spherical or hemispherical chambers, umbilical aperture and rounded periphery. 5 4. Test with angular to ovate chambers; spiral side flat or gently curved; peripheral keel may be present; aperture a narrow slit from umbilicus to periphery. ....................................................................................... Globorotalia 5. Trochospiralcoilingthroughoutlife................................................................................... 6 5. Streptospiral coiling in adult. ............................................................................... Pulleniatina 6. Hemispherical chambers with umbilical aperture; coarsely pitted surface texture; umbilical tooth.. .................. Globoquadrina 6. Spherical chambers and umbilical aperture frequently covered by bulla with infralaminal apertures; smooth surface texture Globigerinita 7. Primary aperture only ............................................................................................... 8 9 7. Primary aperture and one or more secondary apertures.. ................................................................. 8. Aperture umbilical, chambers spherical to ovate. ............................................................... Globigerina 8. Aperture from umbilicus to periphery; trochospiral in ontogeny becoming nearly planispiral in adult. ................. Globigerinella 9. Multi-chamberedtest ................................................................................................ 10 9. One-chambered spherical test (juvenile stage is multi-chambered with secondary apertures) ............................... Orbulina 10. Cancellate, honeycomb-like surface. ....................................................................... Globigerinoides 10. Pitted to smooth, translucent texture; chamber flanges. ...................................................... Sphaeroidint.lla ................................... -3PLANISPIRAL-Triradiate -SPINOSE- SpinFTransparent Test-nHastigerinacc 3 4 5 6 7 Globigerina digitata Globigerina quinqueloba Globigerina pachyderma Globigerina humilis Globigerina falconensis Globigerina bulloides Globigerina calida Globigerinella aequilateralis -Globigerinella adamsi 8 9 10 11 12 13 14 15 16 17 7 I *Globigerinitacc LSutural Apertures Very Smooth Test Globigerinita glutinata Globigerinita bradyi 18 19 Globoquadrina dutertrei Globoquadrina conglomerata Globoquadrina hexagona Pulleniatina obliquiloculata 20 21 22 23 Globorotalia truncatulinoides Globorotalia crassaformis Globorotalia hirsuta Globorotalia scitula Globorotalia menardii -Globorotalia tumida 24 25 26 27 28 29 30 -Globorotalia inflata -Globorotaliidae Figures i 2 Orbulina universa Globigerinoides conglobatus Globigerinoides ruber Globigerinoides sacculifer Sphaeroidinella dehiscens -Globigerina rubescens Globigerinidae ~ G lbigerinacc o TROCHOSPIRAL I Hastigerina pelagica Hastigerinella digitata -acandeinacc-Candeina nitida 31 In the Key overleaf species marked ** are commonly found in the northeastern Atlantic between 40°N and 65"N lat. and between 25OW long. and Western Europe. Species marked * occur less commonly in this area. Each species in the Key and in the diagram above is given a number and the same number is used in the figures, different views of the name species being lettered a, b, c. Unless otherwise marked all the bar scales (placed underneath the middle specimen) are 500 p. References BANNER, F. T. and BLOW,W. H., 1960. Contr. Cushman Fdn Foramin. Res., 11(1):1-41. B%,A. W. H., 1959. Micropaleontology, 5( 1):77-100. Bb, A. W. H., 1966. ))Distributionof planktonic Foraminifera in the World Oceanscc. Abstracts of Papers, 2nd International Oceanographic Congress, Moscow 1966. p. 26. BELYAEVA, N. V., 1964. Trudy Inst. Okeanol., 68:12-83. A. R., Jr. and TAPPAN, H., 1957. BOLLI,H. M., LOEBLICH, Bull. U.S. Natn. Mu., 215:3-50. BOLTOVSKOY, E., 1964. Serv. Hidrogr. Naval, Argent., Publ. H. 639: 1-54. BRADSHAW, J. S., 1959. Contr. Cushman Fdn Foramin. Res., lO(2) :25-64. CIFELLI,R., 1965. Smithson. Misc. Collns, 148(4):1-35 (Publ. 4599). PARKER, F. L., 1962. Micropaleontology, 8(2):219-254. SCHOTT, W., 1935. Wiss. Ergebn. dt. atlant. Exped. ,Meteorcc, 3(3) :43-134. Key to Species Test Species *Hastigerina pdagica (d'orbigny) Hastigerineiia digitata (mumbler) *&bulina unimsa d'Orhigny Outline Dominant Coiling Direction (spiral side) Chambers Smooth Trochospiral in juvenile; spherical in adult spinose > I mm 4 in juvenih Spherical Equatorial Truadiatt spines Transparent test, triradiate spines Subtropical, tropical 6 Bifurcate or trifurcate in adult Equatorial becoming spiroumbilical Triradiatc spines Transparent test, triradiate spines, horn-like chambers Subtropical, tropical below 500 m depth 4-5 in juvenile; 1 in adult Spherical Umbilical in juvenile; none in adult One (in earlier spinose S i l e spherical chamber Tropical, subtropical 3 u p to - 1 mm Trochospiral nearly spherical Left+Right Coarsely spinow - I mm Globigerinoides ruber d'orbigny Trochospiral Left+Right Coarsely spinw -0.6 mm Globigerinoides sacculifer (Brady) [=Globigerinoiah trib6u.r (Reuss)] Trochospiral ovate Left+Right spinose, honeycomb texture >Sphaeroidineila dehkctns (Parker and Jones)u a terminal form of Gbbigerimides soccul~m (Brady) Trochospual ovate Left+Right Secondar apeper chamber Globigm'na rubercm Hofker Trochospiral Left+Right Spinose Hiapid Globigerina digirala Brady Trochospiral Left+Right spinose HLpid **Globigarina quinqueloba Natland Trochospiral compressed kft+Right Spinose; smooth '"Globigm'na pachyderma rrochospiral compact Left Right character9 Stages dY) 5-6 in juvenile; 4 in adult Spherical becoming compreved Umbilical Two Spinose Two secondary apertures per chamber; primary aperture over 3 chambers; round outline Tropical, subtropical aurface watua 4 5 in juvenile 3 in adult Spherical Umbilical Two spinose P d to red pigment; two secondaq apertures per chamber; primary aperture over two chambers Tropical, subtropical surface waters 5 6 7 in Spherical; last chambel often elongate and compruscd Umbilical One spinose Sac-like final chamber (if present) ; one secondary and one primary aperture per chamber; honeycomb texture; primary aperture over three chambers Dominant species in tropical surface water; common also in subtropical regiom 6 4 in adult Spherical with chamber flanges Umbilical (obscured) Spinose in One (concealed: juvenile; nonspinw in adult Great wall thickening producing smooth, glassy layer; chamber flanges coalesce and obscure apertures Tropical, subtropical below 500 m depth 7 -0.25mm 5 in juvenile 4 in adult Spherical Umbilical spinose Light orangepink pigment in test Tropical, subtropical surface waters 8 -0.65mm 4-5 in iuvenile; 4-6 in adult Spherical in juvenile; digitate in adult Umbilical spiroumbilical in adult spinose Digitate final chamber@) Tropical, subtropical 9 5-6 in Hemispherical to ovate flaplike fina chamber Umbilical; sometimes modified into infralaminal apertures spinose Final &amber a lobed extension over umbilicus, hut not always present Subarctic and subantarctic cold-temperate surface waters; left-coilii population in colder waten Spherical becoming subquadrate Umbilical becoming utra-umbilical;dktinct lip May be present in iuvenile; absent in adult Subquadrate, coarse-crystaline compact test; aperture is a narrow slit with distinct lip Left-coiling in sub-polar; right-coiling in coldtemperate waters - 1.3 mm - 1.3 mm juvenile; 4 in adult - coarse Figs. Primary aperture position Gbbigm'm'ahconglo6ahrs (Brady) (Ehrenberg) Distribution Shape 5mm Smooth to pitted Diagnostic Number per whorl 6 in adult Planispiral Streptospiral spies Maximum length Texture Smooth Planispiral Apertures - 0.27- - 0.47mm juvenile and adult 5 in juvenile 4 in adult 10 rrochospiral 2ompressed rochospiral ,ecoming iearly kmispiral rrochospiral ,ecoming treptospiral Globoquadrina conglomraia (Schwager) Ghboquadrina hexagona (Natland) Pulhiatina obliquiloculata (Parker and Jones) Light mostly xft+Right kft+Rigbt tight mostly Keel is absent in all species listed on these two pages. rrochospiral *Globoquadrina dutertrci (d'0:bigny) (= Ghbigcrina cggcrr Rhumbler) Rft+Right Left+Right Trochospiral Trochospiral Left+Right Ghbigcrinita brad$ Wiesner [= Ghbigcrinita uvula (Ebrenbeg)] Globigcrinella adami (Banner and Blow) LeftfRight Left+Right Left+Right Left+Right Left+Right Trochospiral becoming nearly planispiral Trochospira' becoming nearly planispiral * Globigcrinella aequilatcralir (Bra49 [= Ghbigm'nella siphomfcra (d'orbigny)] Trochospiral Trochospira Trochospira Globigcrina calida Parker **Ghbigcrina klhi&s d'Orbigny Ghbigmha falconmrir Blow Trochospira compressed 'itted in uvenile; zry smooth n adult Zoarse, itted Zoarse, itted 202itted Smooth iinely hispid Smooth Enely hispic Spinose hispid Spinose hispid Spinose bispid Spinose hispid Spinose hispid Spinose smooth 1.48mm 0.9 mm 0.8 mm 0.8 mm 0.19mm 0.48mm ' 0.8 mm 0.58mm 0.86mm 0.68mm * - 9 - - -0.43mm "0.21 mm M in uvenile; I yZ in adult Iemispher:al, later verlapping arlier hamben Cal Iemispher- Cal 5 in juvenile i4 in adult 3emispher- 1 in adult 3emisphercal Spherical Spherical Spherical becoming radially :longate Spherical Spherical becoming elongate Spherical Spherical to ovate Hemispher. ical to ovate; flap like final chamber 5 in juvenile 50r6in iuvenile; +6 in adult 5 in juvenile 4 in adult 5 in juvenilt 4 in adult 5 in juvenilc 5-7 in adult 5 in juvenil< 5-6 in adult 5 in juvenili 4 6 in adull 5 in juvenili 4 in adult 5 in juvenil 4 in adult 5-6 in juvenile; 6-8in aduli Jmbilical Iecoming xtra imbilical Jmbilical )ecom ing 'xtra umbiical with 00th 00th Jmbilical with unbilical 00th Umbilical Nith imbilical Umbilical sometimes modified nto infraaminal spertures Umbilical, sometimes modified into infralaminal apertures Umbilical becoming interiomarginal equatorial Equatorial, interiomarginal arch Umbilical becoming extra-umbilical Umbilical Umhilical with lip Umbilical; sometimes modified into infralaminal apertures jpinose jpinose 3pinose Spinose Spinose Spinose Ntreptospiral,right-coiling; ,ighlypolished test with rescent-shaped aperture; ivenile resembles Globoquadrina utcrtrci ion-spinose, pitted wall; unbilical tooth; compressed test vith apertural and spiral sides lepressed (on-spinose, pitted wall; unbdical tooth; 4 chambers in last vhorl of adult 'Ion-spinose, pitted wall; unbilical tooth; predominantly ight-coiling 3ulla and infralaminal apertures; ligh spire and numerous chamben Bulla and infralaminal apertures; imooth test Radially elongate, pointed final :hamhers Nearly planispiral test Elongate final chambers, highly arched aperture, intergrades with Globigcrina Alloidcs and Globigcrinella aequilatcralis Large, high-arched aperture Resembles Globigcrina bulloidcs but has more elongate chambers, low arched aperture with lip and smaller test Six to eight chambers per whorl and bulla-lie final chamber .ropical, subtropical; .bundant in November in ubtropical North Atlantic rropical, subtropical in 'acific and Indian Oceans lnly rropical Pacific and ndian Oceans only rropical, subtropical Subpolar and coldemperate Subpolar to tropical IdY Subtropical, tropical in [ndian and Pacific Oceans hbtropical, tropical Subtropical, tropical Subpolar, cold-temperate Cold-temperate and iubtropical Subtropical to subpolar 23 22 21 20 19 18 17 16 15 14 13 12 Smooth in juvenile, becoming hispid Smooth in juvenile; coarsely hispid at aperture bas Smooth in juvenile; coarsely crystallie in adult ;eft+Right Left mostly Left mostly Compressed trochospiral biconvex Compressed trochospiral subcircular outline Compressed trochospiral elongate oval outline Globorotalia scitula (Brady) Globorotalia menardii (d'orbigny) [= Globmotalianrltrata (d'orbigny)] Spines are absent in all species listed on thii page. tight mostly Very smooth Coarsely hispid tight mostly Compressed trochospiral; biconvex or apertural side flat Globorotalia hirnrta (d'orbigny) - Smooth to hispid Left mostly Trochospiral planoconvex Globorolalia crarsaformis (Galloway and Wissler) [= Globorotalia punchdata (d'orbigny)] Trochospiral Smooth to hispid &+Right Trochospiral conical *Globorotdia tnmcatulinoidcs (d'orbigny) Cdeina nitida d'Orbigny Smooth; crystalline at apertural base Left mostly Trochospiral; flat spiral side; inflated apertural side Texture "Gbborotdia inj7ata (d'orbigny) Dominant Coiling Direction (spiral side) Test mm 0.66 mm 1.0 mm 1.4 mm 0.76 mm - - 1.5 mm ,. - - - 0.65 .,0.9 mm 0.65 mm - Maximum length Inflated, hemispherical Shape 4 in juvenile 3 in adult 5-6 in adult 5-6 in adult 5 - 6 in juvenile and adult 4-5 in adult 5-6 in iuvenile; 4-5 in adult Spherical Angular rhomboid Angular rhomboid And? rhomboid Angular rhomboid Angular conical 5 in juvenile; Angular 5-6 in adult conical 5 in juvenile; I. in adult Number per whorl Chambers Umbilical but absent in adult Elongate from umbilicus to periphery, with lip Elongate from umbilicus to periphery, with lip Elongate from umbilicus to periphery, with lip Elongate from umbilicus to periphery, with lip Elongate from umbilicus to periphery, with lip Elongate from umbilicus to periphery, with lip Large; umbilical to extra umbilical Primary aperture position ktural ipertures - Secondar apertures per chamber Apertures Key to Species Welldeveloped keel keel Welldeveloped Absent or obscure Obscure i: juvenile; thin in adult Obscure, thin keel Wellieveloped keel Keel Multiple sutural apertures between all chambers; very smooth globular test Elongate oval outline and higher spire than Cloborotalia menardii; test often greatly thickened Rounded, moderately lobulate periphery; diffen from Globmotalia tum'da in flatter and subcircular, thinner test More rounded periphery and smoother test than Globorotalia hirsuta More lobulate periphery and fewer chambers than Globorolalia scitula; right-coiling mostly Differs from Globmotaliainflata in its slit-like aperture and angular periphery; differs from GbborotlJia hirsuta in its convex apertural side and flat spiral side conical test Large aperture, rounded periphery; left-coiling and smooth test Diagnostic Characters Tropical, subtropical surface waters Tropical, subtropical Tropical, subtropical Subpolar to equatorial especially below 500 m Subtropical, especially in winter Subtropical, often below 300 m Subtropical, especially abundant between December and March in Sargasso Sea; distinct provinces of left- andrightcoiling populations in Atlantic and Pacific Cold-temperate regions between subpolar and subtropical; in winter in subtropics Distribution 31 30 29 28 27 26 25 24 Ih 7a 7c 2so)l 9b 9a @ Q l25y I2a 12b - 13a Il a 15a 1'7'a I3c I 5b I5c I Ilb I Ic I le I If - I2c 13b I I Io c \ 9c Ild t6b 16a 17b I I7c Unless otherwise marked, all the bar scales (placed underneath the middle specimen) are 500y. I 18a 18b I8c I 2sop ~ 19a 19 b 19c Id 20a 20 b 20c 21c 250p U 22a 22 b 22c 23 c 23a 24 a 26a 30a 26b 30 b 26c 28c 29a 29 b 29c 30c 3 la 31 b 31c jades, tional NO. 25 - SIIb DISTRIBUTION OF PLANKTONIC FORAMINIFERA IN THE WORLD OCEANS BB A l l a n W.H. Lamont Geolopical Observatory of Columbia University, Palisades, New York, U S A There are about 30 species of planktonic Foraminifera living in the world oceans, and they can be grouped into three major distributional zones - a warm-water belt between approximately 40" N and 40" S Latitudes, which divides the northern cold-water region from its southern counterpart. The bipolar nature ol the species distributions is evident from the striking similarity of the foraminiferal faunas in reciprocal latitudinal zones between the northern and southern hemispheres. The majority of the species (22) belong to the warm-water province. Its faunal diversity suggests that here evolution proceeded more rapidly than in the colder areas. The warm-water species can be grouped into (a) the Equatorial or Tropical species (e. g.,. Globigerinoides sacculifer, Globorotalia menardii, Globoquadrina dutertrei, Pulleniatina o bliquiloculata, and Globorotalia tumida), which are transported to mid-latitudes via the warm currents (Gulf Stream, Kuroshio Currents, etc.) along the eastern margins t of the continents; and (b) the Central-water or Subtropical species (e. g., Globorotalia hirsuta, G. truncatulinoides and Hastigerina pelagica) which occur in the central oligotrophic areas of the oceans. Some species (Glohigerinoides ruber, Globigerinella aequilateralis and Orbulina universa) occur abundantly in both tropical as well as subtropical waters. The seasonal succession of these foraminiferal assemblages was documented in the the Sargasso Sea off Bermuda from plankton tows collected biweekly between 1958 and 1962. There are a t least three warm-water species that occur in the Indo-Pacific region, but which are no longer present in the Atlantic Ocean. They are Globoquadrina hexagona, G. conglomerata and Globigerinella adamsi. The former two species are known from Pleistocene deep-sea sediments, but they have apparently disappeared since from the Atlantic. The cold-water fauna can be divided into Subpolar species (Globigerina quinqueloba, right-coiling G. pachyderma, G. bulloides sensu strict0 and Globigerinita bradyi) and a single Polar species (left-coiling G. pachyderma). The bipolarity in the faunal zonations is clearly observed in the distributional patterns of the coiling directions of G. pachyderma and G. truncatulinoides in the North and South Atlantic. The two transitional zones between the warm-water and cold-water fau, nas are characterized by the prolific occurrence of Globorotalia inflata. Its distribution is generally limited to the middle latitudes, with the exception of incursions equator-ward along the western margins of continents, where upwelling takes place. Planktonic Foraminifera apparently spend their earlier stages in the enphotic zone and later descend to deeper depths. Life a t great depths is accompanied by considerable shell thickening in most species which is estimated to add about 5O0/o or more CaCOa by weight to the foraminiferal test (e. g., . Globorotalia menardii, G. truncatulinoides, Globigerinoides sacculifer d3.dehiscens))). Some species such as Globorotalia crassaformis, G. scitula, and Hastigerinella digitata appear to be truly meso- or bathypelagic. The spinose species are generally epipelagic, whereas the non-spinose ones exhibit a great range in depth habitats. 26 From: Abstracts of Papers, Second Intern. Oceanogr. Congr., Publ. House "Nauka'l, Moscow, 1966.