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Zeugrhabdotus erectus

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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP382.8
EISBN: 9781862396463
.... The abundance of the nannofossils, Biscutum constans , Discorhabdus rotatorius , Zeugrhabdotus erectus and Diazomatolithus lehmanii suggest higher fertility and eutrophic conditions. Low oxygenation conditions leading to organic matter preservation are suggested by the presence of conical and trochospiral...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP382.7
EISBN: 9781862396463
...-fertility taxa, such as Biscutum constans and Zeugrhabdotus erectus . This shift in nannofloral assemblages starts in the last stages of OAE2; that is, towards the top of the second build-up phase and also covers the main part of the plateau phase of δ 13 C. Since the discovery of carbon-rich black...
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Journal Article
Published: 01 October 2005
Micropaleontology (2005) 51 (4): 333–343.
... of nannofossil taxa which have proxy potential but which require focused study to determine the extent of their utility. Here, we point to the problems associated with some of the most commonly used Mesozoic nannofossil proxy taxa ( Watznaueria spp., Biscutum constans , Zeugrhabdotus erectus , Nannoconus spp...
Journal Article
Journal: PALAIOS
Published: 01 October 2015
PALAIOS (2015) 30 (10): 728–742.
... and Zeugrhabdotus erectus preferred such areas of high nutrient content. The nutrient affinity of these taxa was confirmed by independent studies on similar paleo-upwelling scenarios ( Erba 1992 ; Eshet and Almogi-Labin 1996 ) and on rhythmically bedded successions due to the alternation of eutrophic...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2004
DOI: 10.1144/GSL.SP.2004.230.01.11
EISBN: 9781862394780
... with C. deformis erectus ( Walaszczyk & Cobban 2000 ). This study has identified several microfossil and/or nannofossil biostratigraphic events that are associated with the boundary datum that may serve as strati-graphic proxies (Fig. 19 ). As noted by Walaszczyk & Cobban (2000 ), contrary...
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Journal Article
Journal: PALAIOS
Published: 01 May 2011
PALAIOS (2011) 26 (5): 298–313.
... reinhardtii has been included in Watznaueria spp. and Zeugrhabdotus spp. includes Z. noeliae (abundant), Z. elegans (common to abundant; Fig. 3E ), Z. bicrescenticus (common; Fig. 3D ), Z. scutula (few), Z. embergeri (few; Fig. 3F ), Z. erectus (few), and Z. diplogrammus (rare...
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Image
A: Relative abundance of small taxa (  Biscutum costans  ,   Discorhabdus r...
in > Geology
Published: 01 September 2009
Figure 2 A: Relative abundance of small taxa ( Biscutum costans , Discorhabdus rotatorius , and Zeugrhabdotus erectus ) and of Watznaueria barnesiae . B: Absolute abundance of W. barnesiae .
Image
Abundance patterns of selected calcareous nannofossil taxa through the Ceno...
Published: 01 October 2005
: Biscutum constans (B.c.), Prediscosphaera spp. (P. spp.), Staurolithites spp. (S. spp.), Zeugrhabdotus elegans (Z. el.), Zeugrhabdotus erectus (Z. er.), and Zeugrhabdotus spp. (Z. spp.).
Image
Abundance patterns of selected calcareous nannofossil taxa through the Ceno...
Published: 01 October 2005
indicators: Biscutum constans (B.c.), Prediscosphaera spp. (P. spp.), Staurolithites spp. (St. spp.), Zeugrhabdotus elegans (Z. el .), Zeugrhabdotus erectus (Z. er.), and Zeugrhabdotus spp. (Z. spp.).
Image
The degradation of calcareous nannofossils during the firing of experimenta...
Published: 01 October 2007
) Zeugrhabdotus erectus in briquette fired to 600° C in the SEM, scale bar=20 µm; ( d ) Z. erectus in briquette fired to 800° C in the SEM, scale bar=20 µm.
Image
Calcareous nannofossils from the Hanifa Formation in Wadi Laban-1 (WLBN-1) ...
in > GeoArabia
Published: 01 April 2008
1,500′; (5) Podorhabdus spp. WLBN-1,500′; (6) Podorhabdus spp. WLBN-1,500′; (7) Ellipsagelosphaera britannica WLBN-1,500′; (8) Cyclagelosphaera riyadhensis WLBN-1,500′; (9) Cyclagelosphaera riyadhensis WLBN-1,500′; (10) Zeugrhabdotus erectus BRRI-229,8575.20′ (Plug no 775); (11
Image
Middle to Upper Jurassic calcareous nannofossils from core samples in onsho...
in > GeoArabia
Published: 01 October 2015
, Sargelu Formation; (17) Watznaueria manivitae , XPL, Well K, 10,445.00 ft, Jubaila Formation; (18) Watznaueria manivitae , XPL, Well V, 10,239.00 ft, Najmah Shale Member; (19) Zeugrhabdotus erectus , XPL, Well B, 14,323.30 ft, Sargelu Formation; (20) Zeugrhabdotus erectus , XPL, Well C
Image
Calcareous nannoplankton in the Jurassic sediments of the Dobrudja foredeep...
Published: 01 May 2015
Fig. 3. Calcareous nannoplankton in the Jurassic sediments of the Dobrudja foredeep. Nicols × (90°), ×1575. The scale of the photographs was violated during the operation of the Photoshop software. Figs. 1 , 2 , Tubirhabdus patulus Rood, Western region; Figs. 3 , 4, Zeugrhabdotus erectus
Image
All images under crossed-polarized light. Scale bar is 1 μm in Fig.  11.1 ;...
Published: 29 January 2003
; ( 11.21 ) distal view without spine; ( 11.22 ) side view; figs. 11.23, 11.24. Parhabdolithus cf. liasicus Deflandre 1952 ; fig. 11.25. Triscutum sp. indet.; fig. 11.26. Tubirhabdus patulus Prins ex Rood et al.1973 ; fig. 11.27. ? Zeugrhabdotus erectus (distal view) ( Deflandre 1954 ) emend
Journal Article
Published: 01 May 2015
Russ. Geol. Geophys. (2015) 56 (5): 737–744.
...Fig. 3. Calcareous nannoplankton in the Jurassic sediments of the Dobrudja foredeep. Nicols × (90°), ×1575. The scale of the photographs was violated during the operation of the Photoshop software. Figs. 1 , 2 , Tubirhabdus patulus Rood, Western region; Figs. 3 , 4, Zeugrhabdotus erectus...
FIGURES
Journal Article
Published: 01 October 2005
Micropaleontology (2005) 51 (4): 319–332.
...: Biscutum constans (B.c.), Prediscosphaera spp. (P. spp.), Staurolithites spp. (S. spp.), Zeugrhabdotus elegans (Z. el.), Zeugrhabdotus erectus (Z. er.), and Zeugrhabdotus spp. (Z. spp.). ...
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Series: Special Publications
Publisher: Society for Sedimentary Geology
Published: 01 January 2019
DOI: 10.2110/sepmsp.111.12
EISBN: 9781565763616
... mutterlosei Crux 1989 Watznaueria barnesiae (Black in Black & Barnes 1959) Perch-Nielsen 1968 Watznaueria manivitiae Bukry 1973 Zeugrhabdotus clarus Bown 2005 Zeugrhabdotus erectus (Deflandre in Deflandre & Fert 1954) Reinhardt 1965 Zeugrhabdotus noeliae Rood et al...
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Journal Article
Journal: Geology
Published: 01 September 2009
Geology (2009) 37 (9): 819–822.
...Figure 2 A: Relative abundance of small taxa ( Biscutum costans , Discorhabdus rotatorius , and Zeugrhabdotus erectus ) and of Watznaueria barnesiae . B: Absolute abundance of W. barnesiae . ...
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Journal Article
Journal: Geology
Published: 01 February 2004
Geology (2004) 32 (2): 149–152.
... of fertility-related forms ( Roth and Krumbach, 1986 ; Erba, 1992 ; Williams and Bralower, 1995 ) are observed ( Fig. 2 ). In particular, Diazomatolithus lehmanii is abundant in the lower part of the sedimentary section, where Zeugrhabdotus erectus is relatively common, and reaches 40% during the δ 13 C...
FIGURES
Journal Article
Journal: PALAIOS
Published: 01 December 2008
PALAIOS (2008) 23 (12): 821–832.
...%), small zeugrhabdotids (mainly Zeugrhabdotus erectus ; 534A: 2%–13%; 603B: 3%–18%) and the two nannolith taxa Assipetra infracretacea and Nannoconus . In general, A. infracretacea and nannoconids are more abundant in the upper Berriasian and lowermost Valanginian; they became rarer from...
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