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FIGURE 14 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 14. Family Ellipsolagenidae, Glandulinidae, and Epistominidae. All scale bars = 0.1mm. 1. Favulina scalariformis (Williamson), MPC-26258 from sample 4 (Minebari Formation, PL5). 2, 3. Fissurina angulata (Uchio), 2: MPC- 26261, 3: MPC-26262, both from sample MK01 (Yonahama F., PL2). 4, 5. Fissurina bradii Silvestri, 4: MPC-26263 from sample 6 (Yonahama F., PL2); 5: MPC-26264 from sample 14-2 (Yonahama F., PL4). 6, 7. Fissurina caribaea (Cushman), 6: MPC-26265 from sample 15 (Yonahama F., PL3); 7: MPC-26266 from sample MK01 (Yonahama F., PL2). 8, 9. Fissurina circularis Todd, 8: MPC-26267 from sample 3-2-low-silt (Onogoshi F., PL1); 9: MPC-26268 from sample MK02B (Minebari F., PL5). 10, 11. Fissurina marginata (Montagu), 10: MPC-26269 from sample 3-2-low-silt (Onogoshi F., PL1); 11: MPC-26270 from sample 16 (Yonahama F., PL3). 12. Fissurina quadrata (Williamson), MPC- 26271 from sample 1 (Minebari F., PL5). 13. Parafissurina basispinata McCulloch, MPC-26404 from sample 7 (Yonahama F., PL4). 14, 15. Parafissurina lata (Wiesner), 14: MPC-26405 from sample 2 (Minebari F., PL5); 15: MPC- 26406 from sample MK01 (Yonahama F., PL2). 16, 17. Pseudofissurina metaconica (McCulloch), 16: MPC-26432 from sample 8-2 (Yonahama F., PL4); 17: MPC-26433 from sample 17 (Yonahama F., PL2). 18, 19. Montcharmontzeiana leminiscata (Loeblich and Tappan), 18: MPC-26377, 19: MPC-26378, both from sample 7 (Yonahama F., PL4). 20, 21. Glandulina ovula d'Orbigny, 20: MPC-26279 from sample 7 (Yonahama F., PL4); 21: MPC-26280 from sample 10 (Onogoshi F., PL2). 22, 23. Hoeglundina elegans (d'Orbigny), 22: MPC-26322 from sample 4 (Minebari F., PL5); 23: MPC-26323 from sample 13 (Minebari F., PL5).
FIGURE 7 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 7. Family Textulariidae, Pseudogaudryinidae, and Valvulinidae. All scale bars = 0.1mm, unless otherwise indicated. 1, 2. Bigenerina nodosaria d'Orbigny, 1: MPC-26035 from sample 2 (Minebari Formation, PF5); 2: MPC- 26036 from sample 11 (Onogoshi F.,?PF1). Difference of coarseness and test size between specimens of figured 1 and 2 probably reflect eco-phenotypic variation and preservation. 3, 4. Textularia agglutinans d'Orbigny, 3: MPC- 26067, 4: MPC26068, both from sample 18 (Oura F.,?PF1). 5. Textularia cf. candeiana d'Orbigny, MPC-26069, broken specimen from sample 18 (Oura F.,?PF1). 6, 7. Textularia pseudosolita Zheng, 6: MPC-26070 from sample 6 (Yonahama F., PL2); 7: MPC-26071 from sample 6-2 (Yonahama F., PL2). 8, 9. Textularia vola Lalicker and McCulloch, 8: MPC-26072 from sample 8 (Yonahama F., PL4); 9: MPC-26073 from sample 15 (Yonahama F., PL3). 10, 11. Textularia sp.A, 10: MPC-26074, 11: MPC-26075, both from sample 18 (Oura F.,?PL1). 12, 13. Siphotextularia foliosa Zheng, 12: MPC-26063 from sample 1 (Minebari F., PL5); 13: MPC-26064 from sample 15 (Yonahama F., PL3). 14, 15. Pseudoclavulina serventyi (Chapman and Parr), 14: MPC-26058 from sample 11 (Onogoshi F.,?PL1); 15: MPC-26059 from sample 18 (Oura F.,?PL1). 16, 17. Clavulina multicamerata Chapman, 16: MPC-26037 from sample 5-2 (Minebari F., PL5); 17: MPC-26038 from sample 18 (Oura F.,?PL1). 18, 19. Cribrogoesella robusta (Brady), 18: MPC-26039, 19: MPC-26040, both from sample 18 (Oura F.,?PL1).
FIGURE 11 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 11. Family Vaginulinidae. All scale bars = 0.1mm, unless otherwise indicated. 1, 2. Lenticulina cultrata (de Montfort), 1: MPC-26352 from sample 2 (Minebari Formation, PL5); 2: MPC-26353 from sample MK02A-2 (Minebari F., PL5). 3, 4. Lenticulina depressa (Asano), 3: MPC-26354 from sample 11 (Onogoshi F.,?PL1); last three chambers show aberrant inflation; 4: MPC-26355 from sample 18 (Oura F.,?PL1) broken specimen. 5, 6. Lenticulina inornata (d'Orbigny), 5: MPC-26356 from sample 3-2-up-sand (Onogoshi F., PL1); 6: MPC-26357 from sample MK02B (Minebari F., PL5). 7. Lenticulina iota (Cushman), MPC-26358 from sample 3-2-up-sand (Onogoshi F., PL1). 8, 9. Lenticulina orbicularis (d'Orbigny), 8: MPC-26359 from sample 6 (Yonahama F., PL2); 9: MPC-26360 from sample MK01 (Yonahama F., PL2). 10, 11. Lenticulina sintikuensis Nakamura, 10: MPC-26361, 11: MPC-26362, both from sample 6-2 (Yonahama F., PL2). 12. Lenticulina thalmanni (Hessland), MPC-26363 from sample 2-2 (Minebari F., PL5). 13, 14. Lenticulina vortex (Fichtel and Moll), 13: MPC-26364 from sample 2-2 (Minebari F., PL5); 14: MPC-26365 from sample MK02A-2 (Minebari F., PL5); 13, broken specimen. 15. Marginulinopsis striatulus (Cushman), MPC-26369 from sample 4 (Minebari F., PL5). 16, 17. Neolenticulina variabilis (Reuss), 16: MPC-26389 from sample 1-2 (Minebari F., PL5); 17: MPC-26390 from sample 18 (Oura F.,?PL1).
FIGURE 3 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 3. Image examples of focus stacking process. Combined image is processed gathering clearly focused part from pictures taken at several sequential focus depths. Above example is edge view of Globorotalia cultrata from sample MK01. The figure below in the frame is a principle image of focus stacking of optical micrograph. Specimen is mounted on a microscale slide to see its size (background line is used to make scale bar).
FIGURE 1 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 1. Index map of Miyakojima (left) and location of studied fossiliferous outcrops plotted on geologic sketch map compiled after Nakamori (1982) (right).
FIGURE 2 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 2. Map of sampling sites. Each map is made from 1:25,000 digital map of Geospatial Information Authority of Japan.
FIGURE 6 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 6. Family Hormosinidae, Ammosphaeroidinidae, Spiroplectamminidae, Duquepsamminidae, Verneuilinidae, and Eggerellidae. All scale bars = 0.1mm, unless otherwise indicated in 2.1, 23.1, 26.1 as 1mm-line. 1, 2. Rhabdammina sp., 1: MPC-26061, 2: MPC-26062, both from sample 7 (Yonahama Formation, PL4), broken specimens. 3. Hormosinella distans (Brady), MPC-26051, from sample 15 (Yonahama F., PL3), depressed specimen. 4. Reophax sp., MPC-26060, from sample 7 (Yonahama F., PL4). 5, 6. Ammosphaeroidina sphaeroidiniformis (Brady); 5: MPC-26033 from sample 6 (Yonahama F., PL2); 6: MPC-26034, from sample 6-2 (Yonahama F., PL2). 7, 8. Spiroplectinella wrightii (Silvestri), 7: MPC-26065 from sample 6-2 (Yonahama F., PL2); 8: MPC-26066 from sample MK02A-2 (Minebari F., PL5). 9, 10. Duquepsammia bulbosa (Cushman), 9: MPC-26041 from sample 8 (Yonahama F., PL4), 10: MPC-26042 from sample 15 (Yonahama F., PL3). 11, 12. Trochammina sp., 11: MPC-26077, laterally depressed specimen, 12: MPC26078, vertically depressed specimen, both from sample 7 (Yonahama F., PL4). 13, 14. Gaudryina arenaria Galloway and Wissler, 13: MPC-26045 from sample 6-2 (Yonahama F., PL2); 14: MPC26046 from sample 17 (Yonahama F., PL2). 15, 16. Gaudryina sp.A., 15: MPC-26047 from sample 3-2-low-silt (Onogoshi F., PL1); 16: MPC-26048 from sample 11 (Onogoshi F.,?PL1). 17, 18. Gaydryinella cf. japonica Asano, 17 MPC-26049, 18 MPC- 26050, both from sample 18 (Oura F.,?PL1). 19, 20. Eggerella bradyi (Cushman), 19: MPC-26043 from sample 14-2 (Yonahama F., PL4); 20: MPC-26044 from sample 15 (Yonahama F., PL3). 21, 22. Karreriella bradyi (Cushman), 21: MPC-26052 from sample 2 (Minebari F., PL5); 22: MPC-26053 from sample MK02A (Minebari F., PL5). 23, 24. Martinottiella communis (d'Orbigny), 23: MPC-26054 from sample 3 (Onogoshi F., PL1); 24: MPC-26055 from sample 3- 2-low-silt (Onogoshi F., PL1). 25, 26. Martinottiella victorensis (Cushman), 25: MPC-26056 from sample 6-2 (Yonahama F., PL2); 26: MPC-26057 from sample 16 (Yonahama F., PL3).
FIGURE 16 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 16. Family Globorotaliidae. All scale bars = 0.1mm, unless otherwise indicated. 1, 2. Globorotalia margaritae Bolli and Bermúdez, 1: MPC-25976 from sample 3 (Onogoshi Formation, PL1); 2: MPC-25977 from sample 10 (Onogoshi F., PL2). 3, 4. Globorotalia oceanica Cushman and Bermúdez, 3: MPC-25978, 4: MPC-25979, both from sample MK02A (Minebari F., PL5). 5, 6. Globorotalia scitula (Brady), 5: MPC-25980 from sample 8 (Yonahama F., PL4); 6: MPC-25981 from sample MK01 (Yonahama F., PL2). 7, 8. Globorotalia tumida (Brady), 7: MPC-25982 from sample MK01 (Yonahama F., PL2); 8: MPC-25983 from sample MK02A (Minebari F., PL5). 9, 10. Globorotalia tumida flexuosa (Koch), 9: MPC-25984 from sample 15 (Yonahama F., PL3); 10: MPC-25985 from sample 16 (Yonahama F., PL3). 11, 12. Globorotalia viola Blow, 11: MPC-25987 from sample 1 (Minebari F., PL5); 12: MPC-25986 from sample MK02A (Minebari F., PL5).
FIGURE 5 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 5. Lithologic column of outcrops, occurrences of index and stratigraphically important planktonic foraminifera. Stratigraphic intervals of each outcrop are not to scale. Thick arrows in the figure indicate first or last occurrences of index and stratigraphically important species of planktonic foraminiferal zones.
FIGURE 4 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 4. Occurrences of representative foraminiferal species. Scales of abundances are percentage in the assemblages (%).
FIGURE 13 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 13. Family Vaginulinidae, Lagenidae, Polymorphinidae, and Ellipsolagenidae. All scale bars = 0.1mm, unless otherwise indicated. 1, 2. Vaginulinopsis tenuis (Bornemann), 1: MPC-26529, 2: MPC-26530, both from sample 2-2 (Minebari Formation, PL5). 3, 4. Planularia californica (Galloway and Wissler), 3: MPC-26414, 4: MPC- 26415, both from sample 2-2 (Minebari F., PL5). 5, 6. Vaginulina bradyi Cushman, 5: MPC-26526 from sample 4 (Minebari F., PL5); 6: MPC-26527 from sample MK01 (Yonahama F., PL2). 7. Conolagena favosopunctata (Brady), MPC-26209 from sample MK02A-2 (Minebari F., PL5). 8. 9. Hyalinonetrion gracillium (Costa), 8: MPC-26332 from sample 6-2 (Yonahama F., PL2); 9: MPC-26333 from sample MK02A-2 (Minebari F., PL5). 10, 11. Lagena sulcata (Walker and Jacob), 10: MPC-26343 from sample 3-2-up-sand (Onogoshi F., PL1); 11: MPC-26344 from sample 17 (Yonahama F., PL2). 12. Procerolagena gracilis (Williamson), MPC-26425 from sample 14-2 (Yonahama F., PL4). 13, 14. Procerolagena multilatera (McCulloch), 13: MPC-26426 from sample 8-2 (Yonahama F., PL4); 14: MPC- 26427 from sample 14 (Yonahama F., PL4). 15, 16. Pygmaeoseistron aspera (Reuss), 15: MPC-26446 from sample 3-2-up-sand (Onogoshi F., PL1); 16: MPC-26447 from sample 16 (Yonahama F., PL3). 17, 18. Pygmaeoseistron hispidulum (Cushman), 17: MPC-26448 from sample 1 (Minebari F., PL5); 18: MPC-26449 from sample 15 (Yonahama F., PL3). 19—22. Pygmaeoseistron oceanicum (Albani), 19: MPC-26450 from sample 5 (Minebari F., PL5); 20: MPC- 26451 from sample 7 (Yonahama F., PL4); 21: MPC-26549 from sample 11 (Onogoshi F.,?PL1), 22: MPC-26550 from sample 17 (Yonahama F., PL2). 23. Pygmaeoseistron sp. indet. MPC-26452 from sample 10 (Onogoshi F., PL2). 24—26. Sigmoidella elegantissima (Parker and Jones), 24: MPC-46490 from sample 2-2 (Minebari F., PL5); 25: MPC-46491 and 26: MPC-46492 from sample 18 (Oura F.,?PL1). 27. Exsculptina glaphyraheda Loeblich and Tappan, MPC-26254 from sample 17 (Yonahama F., PL2). 28. Favulina melo (d'Orbigny), MPC-26257 from sample 4-2 (Minebari F., PL5).
FIGURE 9 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 9. Family Hauerinidae and Nodosariidae. All scale bars = 0.1mm, unless otherwise indicated. 1. Pyrgo subsphaerica (d'Orbigny), MPC-26087 from sample 6-2 (Yonahama Formation, PL2). 2. Pyrgo simplex (d'Orbigny), MPC-26086 from sample MK02B (Minebari F., PL5). 3. Triloculina tricarinata Parker, Jones, and Brady (young form), MPC-26104 from sample 1 (Minebari F., PL5). 4. Sigmoilina cf. sigmoidea (Brady), MPC-26097 from sample 6 (Yonahama F., PL2), aperture broken. 5, 6. Spirosigmoilina tenuis (Cžjžek), 5: MPC-26100 from sample 11 (Onogoshi F.,?PL1); 6: MPC-26101 from sample 18 (Oura F., PL1). 7, 8. Spirosigmoilina pusilla (Earland), 7: MPC-26102 from sample 5-2 (Minebari F., PL5); 8: MPC-26103 from sample 11 (Onogoshi F.,?PL1). 9, 10. Sigmoilopsis schlumbergeri (Silvestri), 9: MPC-26098 from sample 18 (Oura F.,?PL1); 10: MPC-26099 from sample MK01 (Yonahama F., PL2). 11. Chrysalogonium equisetiformis (Schwager), MPC-26196 from sample 16 (Yonahama F., PL3). 12, 13. Dentalina albatrossi (Cushman), 12: MPC-26216, 13: MPC-26217, both from sample 2-2 (Minebari F., PL5). 14. Chrysalogonium deceptorium (Schwager), MPC-26195 from sample 2-2 (Minebari F., PL5). 15, 16. Dentalina aff. catenulata (Brady), 15: MPC-26218 from sample 6-2 (Yonahama F., PL2); 16: MPC-26219 from sample 11 (Onogoshi F.,?PL1). 17, 18. Dentalina mutsui Hada, 17: MPC-26220 from sample 18 (Oura F.,?PL1); 18: MPC-26221 from sample MK01 (Yonahama F., PL2). 19. Dentalina sp.A, MPC-26222 from sample 8-2 (Yonahama F., PL4).
FIGURE 10 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 10. Family Nodosariidae, Stilostomellidae, and Vaginulinidae. All scale bars = 0.1mm, unless otherwise indicated. 1, 2. Grigelis orectus Loeblich and Tappan, 1: MPC-26294, 2: MPC-26295, both from sample 3-2-low-silt (Onogoshi Formation, PL1). 3, 4. Laevidentalina advena (Cushman), 3: MPC-26334 from sample 5 (Minebari F., PL5); 4: MPC-26335 from sample MK02A-2 (Minebari F., PL5). 5. Laevidentalina antarctica (Parr), MPC-26336 from sample 8 (Yonahama F., PL4). 6, 7. Laevidentalina ariena (Patterson and Pettis), 6: MPC-26337 from sample 3-2-low-silt (Onogoshi F., PL1); 7: MPC-26338 from sample 11 (Onogoshi F.,?PL1). 8. Laevidentalina bradyensis (Dervieux), MPC- 26339 from sample 1 (Minebari F., PL5); 8.3 magnified view of aperture. 9, 10. Laevidentalina subemaciata (Parr), 9: MPC-26340 from sample 3 (Onogoshi F., PL1); 10: MPC-26341 from sample 3-2-low-silt (Onogoshi F., PL1); 10.4 magnified aperture oblique-view. 11. Laevidentalina sp.A, MPC-26342 from sample 6 (Yonahama F., PL2). 12. Mucronina hasta (Parker, Jones, and Brady), MPC-26379 from sample 8-2 (Yonahama F., PL4). 13, 14. Neugeborina longiscata (d'Orbigny), 13: MPC-26547 from sample 6-2 (Yonahama F., PL2); 14: MPC-26391 from sample MK02B (Minebari F., PL5). 15—18. Pseudonodosaria discreta (Reuss), 15: MPC-26434 from sample 2-2 (Minebari F., PL5); 16: MPC-26435 from sample MK01 (Yonahama F., PL2); 17: MPC-26436 from sample 2-2 (Minebari F., PL5); 18: MPC-26437 from sample MK02A (Minebari F., PL5); 15 and 16 megalospheric forms, 17 and 18 microspheric forms. 19, 20. Parafrondicularia helenae (Chapman), 19: MPC-26418 from sample 3-2-low-silt (Onogoshi F., PL1); 20: MPC- 26419 from sample MK01 (Yonahama F., PL2). 21, 22. Proxifrons inaequalis (Costa), 21: MPC-26428 from sample 3- 2-up-sand (Onogoshi F., PL1); 22: MPC-26429 from sample 6 (Yonahama F., PL2). 23, 24. Lenticulina aculeata (d'Orbigny), 23: MPC-26350 from sample 10 (Onogoshi F., PL1); 24: MPC-26351 from sample 18 (Oura F.,?PL1).
FIGURE 12 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 12. Family Vaginulinidae. All scale bars = 0.1mm, unless otherwise indicated. 1, 2. Saracenaria aff. akitaensis Iwasa and Kikuchi, 1: MPC-26485 from sample 2 (Minebari Formation, PL5); 2: MPC-26486 from sample 17 (Yonahama F., PL2). 3. Saracenaria altifrons (Parr), MPC-26487 from sample 15 (Yonahama F., PL3). 4, 5. Saracenaria italica Defrance, 4: MPC-26488, 5: MPC-26489, both from sample 2-2 (Minebari F., PL5). 6. Spincterules sp.A, MPC-26507 from sample 5-2 (Minebari F., PL5). 7, 8. Amphicoryna hispida (d'Orbigny), 7: MPC-26118 from sample 3-2-low-silt (Onogoshi F., PL1); 8: MPC-26119 from sample MK01 (Yonahama F., PL2). 9—11. Amphicoryna separans (Brady), 9: MPC-26120 from sample 3-2-low-silt (Onogoshi F., PL1); 10: MPC-26121 from sample 14-2 (Yonahama F., PL4), 11: MPC-26122 from sample 5 (Minebari F., PL5). 12, 13. Astacolus japonicus (Asano), 12: MPC- 26132 from sample 2 (Minebari F., PL5); 13: MPC-26133 from sample 6-2 (Yonahama F., PL2). 14. Astacolus insolitus (Schwager), MPC-26131 from sample 15 (Yonahama F., PL3). 15, 16. Hemirobulina aff. obesa (Cushman), 15: MPC-26546 from sample 16 (Yonahama F., PL3); 16: MPC-26315 from sample MK01 (Yonahama F., PL2). 17. Hemirobulina aff. uedai (Asano), MPC-26316 from sample 15 (Yonahama F., PL3). 18. Vaginulinopsis sublegumen Parr, MPC-26528 from sample 3 (Oura F., PL1).
FIGURE 8 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 8. Family Spiroloculinidae and Hauerinidae. All scale bars = 0.1mm, unless otherwise indicated. 1. Adelosina schreibersii (d'Orbigny), MPC-26079 from sample 6 (Yonahama Formation, PL2). 2, 3. Ammomassilina alveoliniformis (Millett), 2: MPC-26080 from sample 12 (Minebari F., PL5); 3: MPC-26081 from sample MK02A (Minebari F., PL5). 4. Cycloforina rugosa (d'Orbigny), MPC-26082 from sample 18 (Oura F.,?PL1). 5, 6. Massilina minuta Collins, 5: MPC-26083, 6: MPC-26084, both from sample 14 (Yonahama F., PL4). 7, 8. Quinqueloculina akneriana d'Orbigny, 7: MPC-26088, 8: MPC-26089, both from sample 18 (Oura F.,?PL1). 9, 10. Quinqueloculina auberiana d'Orbigny, 9: MPC-26090 from sample 6 (Yonahama F., PL2); 10: MPC-26091 from sample 6-2 (Yonahama F., PL2). 11. Quinqueloculina sagamiensis Asano, MPC-26092 from sample 6-2 (Yonahama F., PL2). 12, 13. Quinqueloculina seminulum (Linnaeus), 12: MPC-26093 from sample 18 (Oura F.,?PL1); 13: MPC-26094 from sample MK02B (Minebari F., PL5). 14, 15. Quinqueloculina starkeri Loeblich and Tappan, 14: MPC-26095, 15: MPC-26096, both from sample 1 (Minebari F., PL5). 16. Pyrgo murrhina (Schwager), MPC-26085 from sample MK02A (Minebari F., PL5).
FIGURE 15 in Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph
FIGURE 15. Family Epistominidae and Globorotaliidae. All scale bars = 0.1mm, unless otherwise indicated. 1, 2. Hoeglundina elegans (d'Orbigny) large form, 1: MPC-26324 from sample 2-2 (Minebari Formation, PL5); 2: MPC- 26325 from sample 4 (Minebari F., PL5). 3, 4. Clavatorella aff. suturanii Giannelli and Salvatorini, 3: MPC-25930 from sample 5 (Minebari F., PL5); 4: MPC-25931 from sample MK01 (Yonahama F., PL2). 5, 6. Globorotalia conoidea Walters, 5: MPC-25968 from sample 7 (Yonahama F., PL4); 6: MPC-25969 from sample 8-2 (Yonahama F., PL4). 7, 8. Globorotalia conomiozea Kennett, 7: MPC-25970 from sample 3 (Onogoshi F., PL1); 8: MPC-25971 from sample 6 (Yonahama F., PL2). 9, 10. Globorotalia crassaformis (Galloway and Wissler), 9: MPC-25972 from sample MK02A (Minebari F., PL5); 10: MPC-25973 from sample MK02B (Minebari F., PL5). 11, 12. Globorotalia cultrata (d'Orbigny), 11: MPC-25974 from sample MK01 (Yonahama F., PL2); 12: MPC-25975 from sample MK02A (Minebari F., PL5).
Benthic Foraminifera Pore Patterns in the Southeast Pacific
<p>Release for paper 'A species-specific approach to benthic foraminifera pore patterns as a paleoxygenation proxy in the Southeast Pacific' submitted to Paleoceanography and Paleoclimatology (22/August/2024).</p>
The in situ Mg/Ca ratios of planktonic foraminifera shells in the northeastern South China Sea: an attempt to get efficient and reliable proxies
<p>Planktonic foraminifera are one of the important carrier<span>s</span> of the physico-chemical environments. Nowadays, the development of <em>in situ</em> microanalysis technology provides a new opportunity for further understanding the distribution and variation of trace element concentrations in foraminifera shells. In this study, we focus on the <em>in situ</em> Mg/Ca ratios in four planktonic foraminifera shells from the surface sediments of the northeastern slope of the South China Sea (SCS). The results of electron microprobe mapping indicate that <em>G. ruber</em> had periodic bands of high Mg contents and Mg/Ca ratios, consistent with the results of <span>LA-ICP-MS.</span> In contrast, <em>N. dutertrei</em>, <em>P. obliquiloculata,</em> and <em>G.inflata</em> had thick calcite layer with low Mg contents and Mg/Ca ratios. The Mg/Ca ratios of shells may be attributed to symbionts, but the physiological regulation may also have some contributions. Meanwhile, contaminants may lead to the relatively higher Mg/Ca ratios. Therefore, the large Mg/Ca variations in foraminifera shells are not only affected by the surrounding seawater temperature but also constrained by other factors. At last, we employed this method to reconstruct the Mg/Ca-SST in the northeastern SCS over the past ~3000 years. The similar trend to the previous SST records proves that this method is reliable. We hope that this method can be widely applied in the future due to the efficient, fast, and high spatial resolution with small sample amounts.</p>
Benthic Foraminifera Carbon Gradient Proxy in the Southeast Pacific
<p>Release for paper 'Carbon stable isotopes of deep infaunal and epifaunal benthic foraminifera in the Southeast Pacific: lessons from shallow-water samples for a paleoxygenation proxy" (in preparation)' to be submitted to Biogeosciences.</p>
BFR2: a curated benthic foraminifera ribosomal reference database
<p>The present data set provides a fasta file, a tab-separated text file, and an Excel file. The fasta file includes 5,324 18S rDNA reference sequences for benthic foraminifera. The tab-separated text file includes the following fields: BFR2 number = unique internal sequence accession number; length = sequence length; class = class to which each sequence is assigned; order/suborder/clade = order/suborder/clade to which each sequence is assigned; family = family to which each sequence is assigned; genus = genus to which each sequence is assigned; species = species to which each sequence is assigned; isolate number = unique DNA extraction number; clone/direct: indicates whether it has been directly sequenced or cloned; genbank_accession = NCBI sequence accession number; sampling site = biogeographic region where the specimen has been collected; latitude in decimal degrees, longitude in decimal degrees; collection date = year in which specimen was collected; collector = person who collected the specimen; publication = publication associated to the sequence; journal = journal associated to publication; first author = first author associated to publication/sequence; taxonomic remarks = additional taxonomic information/comment; sampling remarks = addional sampling information/comment.<br><br>List of added or updated:<br>- Clone/direct: indicates whether it has been directly sequenced or cloned.<br>- Latitude and longitude in decimal degrees.<br>- Genbank accession number of 1700 18S rRNA sequences added.</p>
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