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Journal of Nannoplankton Research最新文献

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Mid-Late Cretaceous nannofossil biostratigraphy of the Papuan Basin, Papua, New Guinea. 巴布亚新几内亚巴布亚盆地中晚白垩世纳米化石生物地层学。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2122
R. Howe
{"title":"Mid-Late Cretaceous nannofossil biostratigraphy of the Papuan Basin, Papua, New Guinea.","authors":"R. Howe","doi":"10.58998/jnr2122","DOIUrl":"https://doi.org/10.58998/jnr2122","url":null,"abstract":"","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116614733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Short note on the occurrence of small Gephyrocapsa species and birefringent ceratoliths in Messinian diatomites (Gavdos Island, Southern Greece). 在希腊南部伽多斯岛的墨西尼亚硅藻中发现了小的Gephyrocapsa种类和双折射角藻石。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2246
M. Triantaphyllou
{"title":"Short note on the occurrence of small Gephyrocapsa species and birefringent ceratoliths in Messinian diatomites (Gavdos Island, Southern Greece).","authors":"M. Triantaphyllou","doi":"10.58998/jnr2246","DOIUrl":"https://doi.org/10.58998/jnr2246","url":null,"abstract":"","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116775555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
New Aptian calcareous nannofossil species from Brazil. 巴西阿普提钙质纳米化石新种。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2004
C. F. Alves, F. O. L. Lima, S. Shimabukoro
{"title":"New Aptian calcareous nannofossil species from Brazil.","authors":"C. F. Alves, F. O. L. Lima, S. Shimabukoro","doi":"10.58998/jnr2004","DOIUrl":"https://doi.org/10.58998/jnr2004","url":null,"abstract":"The calcareous nannofossil genera Braarudosphaera and Nannoconus are significant biostratigraphic markers and palaeoecological indicators in Cretaceous marine sediments. This is particularly true for Brazilian basins where those nannofossils are used to provide regional biostratigraphic framework across the Aptian and Albian intervals. Recent calcareous nannofossil studies of Aptian sediments from the coastal basins and continental shelf offshore Brazil have recorded the occurrence of two new calcareous nannofossil species, Braarudosphaera pseudobatilliformis and Nannoconus troelsenii, which we describe herein. In addition, the description of one species, Braarudosphaera batilliformis, is emended in this work.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122754792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
A new species of late Triassic nannofossil, Botulus triassicus, and observations on Triassic assemblages from the NW Shelf of Australia. 澳大利亚西北陆架晚三叠世一新种——三叠纪Botulus triassicus纳米化石及其三叠纪组合观察。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2214
D. Rutledge, S. Cole, T. Lawrence, G. Gard
{"title":"A new species of late Triassic nannofossil, Botulus triassicus, and observations on Triassic assemblages from the NW Shelf of Australia.","authors":"D. Rutledge, S. Cole, T. Lawrence, G. Gard","doi":"10.58998/jnr2214","DOIUrl":"https://doi.org/10.58998/jnr2214","url":null,"abstract":"","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131520273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biostratigraphic and morphometric analyses of specimens from the calcareous nannofossil genus Tribrachiatus. 腕鱼属钙质纳米化石标本的生物地层学和形态分析。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2221
J. Self‐Trail, E. L. Seefelt, C. Shepherd, Victoria Martin
{"title":"Biostratigraphic and morphometric analyses of specimens from the calcareous nannofossil genus Tribrachiatus.","authors":"J. Self‐Trail, E. L. Seefelt, C. Shepherd, Victoria Martin","doi":"10.58998/jnr2221","DOIUrl":"https://doi.org/10.58998/jnr2221","url":null,"abstract":"Biostratigraphic and morphometric analyses of calcareous nannofossil assemblages from one outcrop and two cored sections of lower Eocene sediments reveal the presence of two new species: Tribrachiatus lunatus sp. nov., and Tribrachiatus absidatus sp. nov. Differences between these new species and Tribrachiatus orthostylus are discussed. The first occurrence of the two new species is just below the calcareous nannofossil Zone NP11/NP12 boundary, close to the Chron 24r/23n boundary, and thus they are globally useful biostratigraphic markers.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121283149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Taxonomic note: Watznaueria okadai, a newspecies of calcareous nannofossil from the Vocontian Basin, southeastern France. 分类注:奥卡代瓦兹瑙里亚，一新种，产自法国东南部沃肯盆地的钙质纳米化石。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2087
A. Fernando
{"title":"Taxonomic note: Watznaueria okadai, a newspecies of calcareous nannofossil from the Vocontian Basin, southeastern France.","authors":"A. Fernando","doi":"10.58998/jnr2087","DOIUrl":"https://doi.org/10.58998/jnr2087","url":null,"abstract":"","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127566599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diversity of calcareous dinoflagellate cysts in surface sediments of Gullmar Fjord, Sweden – an unrecognized gene pool of the Thoracosphaeraceae (peridineaen dinoflagellates). 瑞典Gullmar峡湾表层沉积物中钙质鞭毛藻囊肿的多样性——一个未被识别的胸鳞藻科(peridineaen dinoflagellates)基因库。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2232
M. Streng, K. Meier
{"title":"Diversity of calcareous dinoflagellate cysts in surface sediments of Gullmar Fjord, Sweden – an unrecognized gene pool of the Thoracosphaeraceae (peridineaen dinoflagellates).","authors":"M. Streng, K. Meier","doi":"10.58998/jnr2232","DOIUrl":"https://doi.org/10.58998/jnr2232","url":null,"abstract":"An unexpectedly diverse and unusual association of calcareous dinoflagellate cysts (Thoracosphaeraceae) is reported from surface sediments of Gullmar Fjord, Sweden. The association is interpreted to be extant and comprises eight taxa, five of which have not been previously reported from this area. The taxa are Calcigonellum elongatum, Caracomia arctica, Leonella granifera, Praecalcigonellum schizosaeptum, Scrippsiella acuminata, S. lachrymosa, S. rotunda, and Scrippsiella sp. aff. S. trifida. The association is unique, as it combines pelagic and neritic taxa previously not found together, which might be explained by the highly seasonal environmental conditions of Gullmar Fjord. The recovered cysts reveal a variety of new morphological and ultrastructural details: P. schizosaeptum has a radial ultrastructure and most likely a Type A archaeopyle; wall-forming crystals of C. elongatum and S. lachrymosa show a compound ultrastructure, while those of P. schizosaeptum and S. rotunda grow epitaxially. Such differences in the ultrastructure of the wall forming crystallites suggest the possibility of fundamentally different biomineralisation mechanisms in calcareous dinoflagellates. At least two distinct species are currently united in S. rotunda, with cysts described from the Gulf of Naples, Norway and the China Sea being different to those of the type locality and Gullmar Fjord. Among the taxa recovered from Gullmar Fjord are rare species with an uncommon combination of morphological features, and include species whose molecular data is currently unavailable. An inclusion of their molecular data, particularly that of C. arctica and P. schizosaeptum, into phylogenetic reconstructions would be crucial to further elucidate the ongoing discussion on the systematic significance of the various cyst characters, such as archaeopyle-, ultrastructure-, and tabulation-type.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128080406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Proposed changes to the classification system of living coccolithophorids II. 对现存球石虫分类系统的修改建议。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/nina2147
A. Kleijne, B. Heimdal
{"title":"Proposed changes to the classification system of living coccolithophorids II.","authors":"A. Kleijne, B. Heimdal","doi":"10.58998/nina2147","DOIUrl":"https://doi.org/10.58998/nina2147","url":null,"abstract":"TAXONOMIC NOTES 1) Rhabdosphaera clavigera: Murray & Blackman (1898) studied coccolithophores from net haul samples and reported living rhabdospheres for the first time, from which they described the genus and species Rhabdosphaera clavigera. Lohmann (1902) described a second species, R. stylifera, from the Mediterranean, differing from R. clavigera in its appendix shape. The former possesses a thin stem composed of fine elements, whereas the latter has a thicker, coarser stem. In recent taxonomic works (Okada & Mclntyre, 1977; Hallegraeff, 1984) the two species have been regarded as conspecific, with R. clavigera having priority. Intermediate forms have been seen (Borsetti & Cati, 1972; Hallegraeff, 1984; Norris,1984) but we believe that the stem types are distinct enough to be separated as varieties so that future distribution studies may provide useful information on their individual biogeographies.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128085551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Coccolithophorid assemblages off the coast of Guam. 关岛海岸外的球石虫群。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2154
S. Konno, C. Lobban, M. Ishizawa, R. Jordan
{"title":"Coccolithophorid assemblages off the coast of Guam.","authors":"S. Konno, C. Lobban, M. Ishizawa, R. Jordan","doi":"10.58998/jnr2154","DOIUrl":"https://doi.org/10.58998/jnr2154","url":null,"abstract":"Surface and subsurface water samples were collected off the western coast of Guam during late September 2008. All samples were dominated by diatoms, with dinoflagellates often being the second most important group. Coccolithophorid absolute abundance (<3.0 x 103 cells/L) and species diversity (generally <10 spp./site) were very low, but included both heteroand holococcolithophorid taxa, as well as the rarely reported coastal species, Cruciplacolithus neohelis. Net samples were also collected off the eastern coast of Guam, as well as from Apra Harbor on the western side, during March 2013; however, the coccolithophorid diversity was much lower on the eastern side of the island, perhaps due to the high particulate load from river outflow. Despite this, some live specimens were observed and photographed. This is the first report of coccolithophorids from Guam, and although the assemblages showed some similarities with those from other subtropical/tropical Pacific islands, surprisingly few cells of Emiliania huxleyi were encountered, while Gephyrocapsa oceanica and Umbellosphaera tenuis were only seen as loose coccoliths.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128087116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Pliocene-Pleistocene coccolith assemblages from the Sierra Leone rise site 366, leg 41 some corrections. 塞拉利昂隆起366号地点的上新世-更新世球岩组合，第41段进行了一些修正。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/nina2216
C. Samtleben
{"title":"Pliocene-Pleistocene coccolith assemblages from the Sierra Leone rise site 366, leg 41 some corrections.","authors":"C. Samtleben","doi":"10.58998/nina2216","DOIUrl":"https://doi.org/10.58998/nina2216","url":null,"abstract":"","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132526865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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