A Neogene Globigerinacean Biochronologic Timescale of the Southwestern Pacific

Bronnimann, P.; Resig, J.

doi:10.2973/dsdp.proc.7.128.1971

Cited by 35 publications

(61 citation statements)

References 9 publications

(12 reference statements)

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“…In other words, they are benthic, but at times planktic, foraminifera. The generic name Streptochilus was coined specifically for Neogene planktic taxa that are morphologically similar to the benthic genus Bolivina (26). Our data document that one biological species can be both benthos and plankton and thus imply that a planktic lifestyle does not warrant assignment to a separate genus.…”

Section: Resultsmentioning

confidence: 75%

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Surviving mass extinction by bridging the benthic/planktic divide

Darling

Thomas

Kasemann

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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Evolution of planktic organisms from benthic ancestors is commonly thought to represent unidirectional expansion into new ecological domains, possibly only once per clade. For foraminifera, this evolutionary expansion occurred in the Early-Middle Jurassic, and all living and extinct planktic foraminifera have been placed within 1 clade, the Suborder Globigerinina. The subsequent radiation of planktic foraminifera in the Jurassic and Cretaceous resulted in highly diverse assemblages, which suffered mass extinction at the end of the Cretaceous, leaving an impoverished assemblage dominated by microperforate triserial and biserial forms. The few survivor species radiated to form diverse assemblages once again in the Cenozoic. There have, however, long been doubts regarding the monophyletic origin of planktic foraminifera. We present surprising but conclusive genetic evidence that the Recent biserial planktic Streptochilus globigerus belongs to the same biological species as the benthic Bolivina variabilis, and geochemical evidence that this ecologically flexible species actively grows within the open-ocean surface waters, thus occupying both planktic and benthic domains. Such a lifestyle (tychopelagic) had not been recognized as adapted by foraminifera. Tychopelagic are endowed with great ecological advantage, enabling rapid recolonization of the extinction-susceptible pelagic domain from the benthos. We argue that the existence of such forms must be considered in resolving foraminiferal phylogeny.end-Cretaceous ͉ foraminifera ͉ Mg/Ca ͉ plankton evolution ͉ SSU rRNA

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Section: Resultsmentioning

confidence: 75%

“…Positive secondary ions of 26 Mg ϩ and 44 Ca ϩ were produced by a-4 nA, 15-kV, 16 O Ϫ primary beam. Secondary ions were analyzed with a 25-m image field and zero energy offset by using the 150-m contrast and the 100-m field apertures.…”

Section: Secondary Ionization Mass Spectrometry (Sims)mentioning

confidence: 99%

Surviving mass extinction by bridging the benthic/planktic divide

Darling

Thomas

Kasemann

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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“…Generic attribution and identification of planktonic foraminifer zones follow Robazynski et al (1984), Caron (1985), and Sliter (1989) for the Cretaceous; Boersma and Premoli Silva (1983), Toumarkine and Luterbacher (1985), Boersmaet al (1987), Premoli Silva and Boersma (1988), and Olsson et al (1992) for the Paleocene and Eocene;andBlow (1969, 1979), Brönnimann and Resig (1971), and Kennett and Srinivasan (1983) for the Miocene through Pleistocene.…”

Section: Planktonic Foraminifersmentioning

confidence: 82%

“…The N22/N23 zonal boundary is tentatively placed with the F0 of Globigerina calida, although according to Brönnimann and Resig (1971) this species in the southwestern Pacific predates the F0 of T. truncatulinoides.…”

Section: Pleistocene (Sample 132-810c-4h-5 65-67 CM Upward)mentioning

confidence: 97%

“…According to Brönnimann and Resig (1971) and Berggren (1973), the LO of Globorotalia margaritae should identify the N19/N20 zonal boundary, whereas the base of Zone N21 is equated to the F0 of the Globorotalia tosaensis group. The latter event occurs less than 3 m above the disappearance of G. margaritae, which results in a very thin Zone N20 at Site 810.…”

Section: Pliocene (Samples 132-810c-9h-4110-112 CM To 132-810c-4h-5mentioning

confidence: 99%

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Calcareous Nannofossil and Planktonic Foraminifer Biostratigraphy of Hole 810C (Shatsky Rise, Northwestern Pacific)

Silva¹,

Castradori²,

Spezzaferri³

1993

Proceedings of the Ocean Drilling Program

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The 136 m of calcareous oozes recovered in Hole 810C span the interval from upper Maastrichtian to middle Pleistocene. Three major hiatuses interrupt the sequence, with the topmost part of the Maastrichtian through the entire lower Paleocene, most of the lower Eocene, and the entire middle Eocene through most of the middle Miocene missing. Severe reworking and displacement affected the lower part of the succession from the Maastrichtian through the middle Miocene. Reworking and displacement gradually decreased in the upper portion. Calcareous nannofossil biostratigraphy enabled us to calibrate precisely the nearly complete magnetic reversal sequence of the Pliocene to the late Pleistocene. Two minor hiatuses detected by calcareous nannofossils across the Pliocene/Pleistocene boundary and in the upper lower Pleistocene, respectively, resulted in shortening of the Olduvai and Jaramillo Events within the Matuyama Chron of the magnetic reversal sequence.

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Biodynamic effects of the messinian salinity crisis on the evolution of planktonic foraminifera in the mediterranean

Cita

1976

Palaeogeography, Palaeoclimatology, Palaeoecology

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A Neogene Globigerinacean Biochronologic Timescale of the Southwestern Pacific

Cited by 35 publications

References 9 publications

Surviving mass extinction by bridging the benthic/planktic divide

Surviving mass extinction by bridging the benthic/planktic divide

Calcareous Nannofossil and Planktonic Foraminifer Biostratigraphy of Hole 810C (Shatsky Rise, Northwestern Pacific)

Biodynamic effects of the messinian salinity crisis on the evolution of planktonic foraminifera in the mediterranean

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