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Sphenolithus heteromorphus

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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1982
AAPG Bulletin (1982) 66 (10): 1695.
...-Gallaway-Point Arena strata. The first occurrence (biohorizon) of Sphenolithus heteromorphus marks the base of the Helicosphaera ampliaperta Zone within the middle Gallaway Formation and serves as an important datum for correlation with California stage stratotype localities in central and southern...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1982
AAPG Bulletin (1982) 66 (5): 644–645.
... assemblage, taken nearest the Pacific Ocean and located near Tom East Creek, includes Coccolithus pelagicus, Coronocyclus nitiscens, Cyclocargolithus floridanus, Dictyoccoccites abisectus, Discoaster deflandrei, D. cf. druggi, Sphenolithus belemnos, S. capricornutus, S. heteromorphus, S. conicus, S. n. sp...
... Miocene calcareous nannofossils. Cyclicargolithus floridanus and Sphenolithus heteromorphus become extinct in the middle Miocene (zones CN5a and CN4, respectively). Reworked middle Miocene species are also found in Fish Creek Wash and Cerro Prieto. No in situ middle Miocene strata were identified...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1969
AAPG Bulletin (1969) 53 (2): 467–468.
... of California. In ascending order, the middle Miocene Turborotalia peripheroronda and Globorotalia peripheroacuta zones correlate with the Relizian Stage, and the Globorotalia praefohsi and Globorotalia fohsi zones correlate with the Luisian Stage. Sphenolithus heteromorphus occurs in the Relizian Stage...
Series: SEPM Special Publication, SEPM Special Publication
Published: 01 January 2004
DOI: 10.2110/pec.04.81.0027
EISBN: 9781565762176
... for the extinction level of Sphenolithus heteromorphus , which is the best event approximating the Langhian-Serravallian boundary and an age of 10.55 Ma for the first regular occurrence of Neogloboquadrina acostaensis , the event that better approximates the Serravallian-Tortonian boundary in the Tortonian type...
FIGURES | View All (10)
Journal Article
Journal: AAPG Bulletin
Published: 01 February 1973
AAPG Bulletin (1973) 57 (2): 438–439.
..., Reticulofenestra pseudoumbilica , was observed to have its first occurrence at the base of the lower Mohnian Brizalina modeloensis Zone. The last occurrence of Sphenolithus heteromorphus was confirmed to be in the uppermost Luisian Stage. © 1973 American Association of Petroleum Geologists. All rights reserved...
Journal Article
Journal: AAPG Bulletin
Published: 01 February 1973
AAPG Bulletin (1973) 57 (2): 436.
... partial correlation of the California stages with the widely recognized plankton biostratigraphic zones of the tropics. The upper Zemorrian is correlative with the Sphenolithus distentus through the lower Triquetrorhabdulus carinatus (NP 24-NN1) zones (upper Oligocene) the Saucesian with the upper T...
Image
Examples of stratigraphically important fossil taxa.  A ) Planktonic forami...
in > PALAIOS
Published: 01 January 2015
Fig. 9.— Examples of stratigraphically important fossil taxa. A ) Planktonic foraminifera Praeorbulina ; two side views and a ventral view. B–E) Representative nannofossils from Samarinda area. B ) Sphenolithus heteromorphus from the Batu Putih subsection. C ) S. heteromorphus from
Image
Most significative specimens of calcareous nannofossils recognized in the s...
Published: 01 June 2009
.; (o) Sphenolithus disbelemnos 0° XP, Podere Capanne 1 Sect.; (p) Sphenolithus disbelemnos 45° NL, Podere Capanne 1 Sect.; (q) Sphenolithus ciperoensis 45°XP, Passignano E Sect.; (r) Sphenolithus heteromorphus 45° XP, San Mariano Sect.; (s) Discoaster deflandrei NL, Passignano E Sect.; (t
Image
Calcareous nannoplankton from the Slanci section with indicated sample numb...
in > PALAIOS
Published: 01 February 2019
pelagicus , 13. G ) Rhabdosphaera sicca , 13. H , I ) Reticulofenestra minuta , 13. J ) Coccolithus pelagicus , 17. K ) ascidian spiculae, 17. L , M ) Sphenolithus heteromorphus , 6. N ) Umbilicosphaera rotula , 10. O ) Hayella challengeri , 10. P ) Umbilicosphaera rotula , 10. Q
Image
Calcareous nannofossil taxa and diatom fragments from Rocchetta Sant’Antoni...
Published: 01 June 2017
Fig. 11 Calcareous nannofossil taxa and diatom fragments from Rocchetta Sant’Antonio (ROC) and San Bartolomeo (SBA) samples. XP: crossed polarized light; PL: plane polarized light. Scale bar = 10 μm. 1 - Sphenolithus heteromorphus Deflandre. ROC, 1a: XP 0°, 1b: XP 45°. 2 - Helicosphaera
Image
Light micrographs of calacreous nannofossils. The sample number, where K30=...
in > Palynology
Published: 01 June 2012
. Sample K30-43. Figures 16, 17, 21. Sphenolithus heteromorphus Deflandre 1953. Sample K30-43. Figure 18. Helicosphaera walbersdorfensis Müller 1974. Sample K30-43. Figures 19, 20. Coronocyclus nitescens (Kamptner 1963) Bramlette & Wilcoxon 1967 . Sample K30-81. Figure 22. Micrantholithus flos
Series: SEPM Special Publication, SEPM Special Publication
Published: 01 January 2009
DOI: 10.2110/sepmsp.093.337
EISBN: 9781565762978
... TOP 2.39 9 Globorotalia peripheroacuta TOP* 4.25 9 Cyclicargolithus floridanus TOP 1.74 11 Globorotalia peripheroronda TOP* 4.81 7 Discoaster deflandrei TOP 4.66 11 Sphenolithus heteromorphus TOP 2.62 11 MMR 2.95 8 Cyclicargolithus floridanus FDI 3.90...
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Calcareous nannoplankton microphotographs (light microscope). 1–2 :  Helico...
Published: 01 November 2010
, 1967; crossed nicols, 0°; Sample FB05. 12–13 : Sphenolithus heteromorphus D eflandre , 1953; crossed nicols; 12 : 0°; 13 : 45°; Sample FB05. 14–15 : Sphenolithus conicus B ukry , 1971; crossed nicols; 14 : 0°; 15 : 45°; Sample CpR6. 17 : Calcidiscus leptoporus (M urray and B lackman , 1898) L
Image
Light microscope micrographs of calcareous nannofossils. XP = cross polariz...
Published: 01 March 2002
Bramlette and Wilcoxon. Cap 23, 50.72 m, XP, 45° (U) and Ph (V). W, X) Sphenolithus heteromorphus Deflandre. Cap 20, 44.02 m, XP, 45° (W) and XP, 0° (X).
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Duration of the high abundance of biserial foraminifera event (yellow bar),...
Published: 01 January 2007
) : 18.9-17.2 Ma (Lowest Occurrence [LO] of Sphenolithus belemnos at 18.92 Ma, Highest Occurrence at 17.89 Ma; LO of S. heteromorphus at 17.66 Ma ( Zachos et al. 2004 ); using the time scale of Berggren et al. (1995) : 19.3-17.6 Ma.
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Magnetostratigraphic and biostratigraphic tie-points for Site U1318. Tie-po...
Published: 30 January 2017
) 1318C 140.83 146.74 Kano et al . ( 2007 ) Presence Sphenolithus heteromorphus (Quaijtaal et al . 2014 ) >13.52 1318C 127.29 131.81 Hilgen et al . ( 2012 ) Bottom C5ABn 13.608 1318B 125.5 130.02 ATNTS 2012 Top Hiatus 2 133.20 Bottom Hiatus 2
Series: SEPM Special Publication, SEPM Special Publication
Published: 01 January 2011
DOI: 10.2110/sepmsp.096.475
EISBN: 9781565762879
... heteromorphus. 3c. Helicosphaera ampliaperta. 3d. Cyclicargolithus floridanus. 3e-f. Helicosphaera perch-nielsenia (3a-f = 1261A-19R-1, 59-62 cm). 4a. Coccolithus pelagicus. 4b. Sphenolithus heteromorphus. 4c. Calcidiscus premacintyrei. (4a-c = 1261A-19R-1, 72-75 cm). 5a-b. Discoaster quinqueramus...
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Journal Article
Journal: Palynology
Published: 01 June 2012
Palynology (2012) 36 (1): 38–79.
.... Sample K30-43. Figures 16, 17, 21. Sphenolithus heteromorphus Deflandre 1953. Sample K30-43. Figure 18. Helicosphaera walbersdorfensis Müller 1974. Sample K30-43. Figures 19, 20. Coronocyclus nitescens (Kamptner 1963) Bramlette & Wilcoxon 1967 . Sample K30-81. Figure 22. Micrantholithus flos...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/GSL.SP.2000.181.01.06
EISBN: 9781862394292
... of this proliferation was a global warming episode – the most important in the Miocene – which occured at this level (Dej Formation). The sub-tropical marine assemblages can be assigned to a part of the NN4 and NN5 zones ( Sphenolithus heteromorphus Biozone) and Neopycnodonte navicularis – Clio falauxi Biozone...
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