Notes on the Foraminiferal Genera &amp;lt;i&amp;gt;Laterostomella&amp;lt;/i&amp;gt; De Klasz and Rérat and &amp;lt;i&amp;gt;Streptochilus&amp;lt;/i&amp;gt; Brönnimann and Resig

Klasz, Ivan de; Kroon, Dick; Hinte, J.E. van

doi:10.1144/jm.8.2.215

Cited by 10 publications

(10 citation statements)

References 12 publications

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“…Planktic species most tolerant of hyposaline conditions (salinities range of 30.5‰-31‰) are Globigerina bulloides, G. quinqueloba, Globigerinita uvula, Globigerinoides ruber, Neogloboquadrina pachyderma (f. superfi ciaria), and Orbulina universa (Be and Tolderlund, 1971). These hyposaline tolerant species are absent in the Bouse Formation in the Blythe basin, whereas species common in normal marine salinities like Streptochilus are present (Darling et al, 2009;De Klasz et al, 1989). Living Streptochilus are present principally in surface marine waters (Darling et al, 2009;De Klasz et al, 1989;Smart and Thomas, 2006), although oxygen isotope values suggest that Streptochilus can live deeper in the upper water column in temperate to tropical, highly productive waters or in shallow surface waters close to upwelling zones in coastal regions (Resig and Kroopnick, 1983;Hemleben et al, 1989;Smart and Thomas, 2006).…”

Section: Paleontologymentioning

confidence: 99%

Evidence for a marine incursion along the lower Colorado River corridor

McDougall

Martínez

2014

Geosphere

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Foraminiferal assemblages in the stratigraphically lower part of the Bouse Formation in the Blythe basin (lower Colorado River corridor, western USA) indicate marine conditions, whereas assemblages in the upper part of the Bouse Formation indicate lacustrine conditions and suggest the presence of a saline lake. Benthic foraminiferal assemblages in the lower part of the Bouse Formation are similar to lagoonal and inner neritic biofacies of the modern Gulf of California. Evidence suggesting a change from marine to lacustrine conditions includes the highest occurrence of planktic foraminifers at an elevation of 123 m above sea level (asl), the change from low diversity to monospecifi c foraminiferal assemblages composed only of Ammonia beccarii (between 110 and 126 m asl), an increase in abundance of A. beccarii specimens (above ~110 m asl), increased number of deformed tests (above ~123 m asl), fi rst appearance of Chara (at ~85 m asl), lowest occurrence of reworked Cretaceous coccoliths (at ~110 m), a decrease in strontium isotopic values (between 70 and 120 m), and δ 18 O and δ 13 C values similar to seawater (between 70 and 100 m asl). Planktic foraminifers indicate a late Miocene age between 8.1 and 5.3 Ma for the oldest part of the Bouse Formation in the southern part of the Blythe basin. Benthic and planktic foraminifers correlate with other late Miocene sections in the proto-Gulf of California and suggest that the basal Bouse Formation in the Blythe basin was deposited at the northern end of this proto-gulf. After the marine connection was restricted or eliminated, the Colorado River fl owed into the Blythe basin, forming a saline lake. This lake supported a monospecifi c foraminiferal assemblage of A. beccarii until the lake spilled into the Salton Trough and the Colorado River became a through-fl owing river.

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Section: Paleontologymentioning

confidence: 99%

Evidence for a marine incursion along the lower Colorado River corridor

McDougall

Martínez

2014

Geosphere

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“…(2006) suggested that Streptochilus martini evolved in the middle Eocene from Chiloguembelina ototara. There is a stratigraphic gap in the upper Oligocene from which no biserial planktics have been described (Kennett and Srinivasan 1983;De Klasz et al 1989). …”

Section: Biserial Planktic Foraminiferamentioning

confidence: 99%

“…south of India, but they were not named, not described at the species level, and not figured. De Klasz et al (1989) named that species S. globulosus, a smooth-walled species, which had been thought to have a Plio-Pleistocene range (Kennett and Srinivasan 1983;Resig 1989). In contrast, Hemleben et al (1989) and Schmuker and Schiebel (2002) state that there is only one living species, which (Kennett and Srinivasan 1983;Resig 1989).…”

Section: Text-figurementioning

confidence: 99%

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Emendation of the genus Streptochilus (Foraminifera) and new species from the lower Miocene of the Atlantic and Indian Oceans

Smart

Thomas

2007

Micropaleontology

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Three new species of Streptochilus, a biserial planktic foraminiferal genus, were recognized in the lower Miocene of the eastern Atlantic and western Indian Oceans. These species had been formerly thought to be benthic species of the genus Bolivina, but evidence on their apertural morphology and stable isotopic composition indicates that they lived as plankton and should be assigned to the genus Streptochilus. The observation that three morphological species occurred in different regions of the oceans during the same short period of time (18.9-17.2 Ma) suggests that these biserial planktic species may have evolved polyphyletically, either from biserial planktic or from benthic ancestors, possibly in response to the occurrence of relatively eutrophic environmental conditions caused by intermittent upwelling, leading to high algal growth rates but low transport efficiency of organic matter to the sea floor. The new species of Streptochilus are described, illustrated and named: S. rockallkiddensis sp. nov. (from the northeastern Atlantic), S. cetacensis sp. nov. (from the equatorial and southeastern Atlantic) and S. mascarenensis sp. nov. (from the western equatorial Indian Ocean) and the description of the genus is emended.

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“…The youngest species, S. globulosum, occurs in the surface sediments of the Ontong Java Plateau and has been found in plankton samples from the Indian Ocean (D. Kroon in De Klasz et al, 1988), establishing it as an extant species. It has a continuous range and is the only biserial species present from just before the first left-to-right coiling change of Pulleniatina in Zone N19/N20 to the present.…”

Section: Species Rangesmentioning

confidence: 99%

Cenozoic Stratigraphy and Paleoceanography of Biserial Planktonic Foraminifers, Ontong Java Plateau

Resig¹

1993

Proceedings of the Ocean Drilling Program

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The Ontong Java Plateau in the western equatorial Pacific contains a deposition record of biserial planktonic foraminifers concentrated in the Paleogene, in which frequencies up to 67% of the planktonic foraminifers are reported, and in the late Neogene, in which a maximum frequency of 48% is reported. Biserial planktonic foraminifers are rare or absent in the latest Oligocene and early Miocene, an interval characterized by warm bottom water and low temperature gradients. These conditions supported a surface assemblage rather than the biserial planktonic foraminifers, whose Neogene species inhabited the oxygen minimum at intermediate depths in the upper water column.Biserial planktonic foraminifers tend to be of high frequency during high sea stands and low frequency during low sea level, presumably in response to the strengthening or weakening of the oxygen minimum. Species extinction and evolution events occur during low sea stands in the Neogene and sometimes correspond to strong reflection horizons of the plateau's seismic stratigraphy.The biserial species are useful biostratigraphic indexes in the plateau section. The last occurrence (LO) of Streptochilus martini corresponds with the Eocene/Oligocene boundary; S. subglobigerum wi houtNeogloboquadrina acostaensis indicates Zone Nl 5; S. latum occurs from the middle of Zone N16 to near the top of Zone N17; 5. globigerum ranges from near the top of Zone N17 to the middle of Zone N19/N20; and the S. globulosum continuous range begins just before the first left-to-right coiling change of Pulleniatina, but the species becomes rare in the Pleistocene section.

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Notes on the Foraminiferal Genera <i>Laterostomella</i> De Klasz and Rérat and <i>Streptochilus</i> Brönnimann and Resig

Abstract: ABSTRACT

Cited by 10 publications

References 12 publications

Evidence for a marine incursion along the lower Colorado River corridor

Evidence for a marine incursion along the lower Colorado River corridor

Emendation of the genus Streptochilus (Foraminifera) and new species from the lower Miocene of the Atlantic and Indian Oceans

Cenozoic Stratigraphy and Paleoceanography of Biserial Planktonic Foraminifers, Ontong Java Plateau

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