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Assipetra

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Nannofossil associations in the LBFb Unit               LBFb    Sample  Abu...
Published: 01 February 2018
Table 2. Nannofossil associations in the LBFb Unit LBFb Sample Abundance Preservation Calcareous Nannofossil Assemblage Age GR09 F B Assipetra infracretacea, Calcicalathina oblongata, Cyclagelosphaera margerelii, Cruciellipsis cuvillieri, Diazomatolithus lehmanii
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Photomicrographs of selected calcareous nannofossils identified in the Palo...
Published: 01 June 2015
) Michrantolithus obtusus , crossed nicols. Sample CDP92; 5) Lithraphidites carniolensis , parallel light. Sample CDP92; 6) Assipetra terebrodentarius , crossed nicols. Sample CDP91.
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Fig. 1.  Acaenolithus galloisii , crossed-nicols, SMH-18-05; 3215 ft (core)...
Published: 01 July 2001
Explanation of Plate 1 Fig. 1. Acaenolithus galloisii , crossed-nicols, SMH-18-05; 3215 ft (core), UK 13/22a-2, 3215 ft (LK15). Figs 2–3 . Assipetra terebrodentarius : 2 , crossed-nicols, SMH-18-12, 12781 ft (core), UK 15/30-3 (LK9B); 3 , A. terebrodentarius (large variety), crossed
Journal Article
Published: 01 October 2005
Micropaleontology (2005) 51 (4): 333–343.
... as oligotrophic ( Coccioni et al. 1992 ) and mesotrophic ( Scarparo Cunha and Shimabukuro 1997 ). An aside to the nannoconid debate, but possibly environmentally-related, is the nannolith, Assipetra . Erba (1994 , fig.4) illustrated an acme of this taxon through and above the Livello Selli (OAE1a), during...
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2424(05)
... are virtually absent in the OAE1a black shales, but coccoliths (especially opportunistic taxa) and other nannoliths such as normal- and over-sized Assipetra and Rucinolithus thrived (e.g., Erba, 1994 ; Aguado et al., 1999 ; Luciani et al., 2001 ; Bellanca et al., 2002 ; Erba and Tremolada, 2004...
Journal Article
Published: 01 July 2001
Journal of Micropalaeontology (2001) 20 (1): 45–80.
...Explanation of Plate 1 Fig. 1. Acaenolithus galloisii , crossed-nicols, SMH-18-05; 3215 ft (core), UK 13/22a-2, 3215 ft (LK15). Figs 2–3 . Assipetra terebrodentarius : 2 , crossed-nicols, SMH-18-12, 12781 ft (core), UK 15/30-3 (LK9B); 3 , A. terebrodentarius (large variety), crossed...
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Journal Article
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 April 2013
GeoArabia (2013) 18 (2): 215–219.
.... Saunders and K. Perch-Nielsen (Eds.), Plankton Stratigraphy . Cambridge University Press , Cambridge , p. 329 – 426 . Yousif , S. and G. Nouman 1997 . Jurassic Geology of Kuwait . GeoArabia , v. 2 , no. 1 , p. 91 – 110 . The association of Assipetra infracretacea...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2004
DOI: 10.1144/GSL.SP.2004.229.01.08
EISBN: 9781862394773
... middle Coniacian-lower Campanian section is characterized by dissolution assemblages dominated by the nannolith species Marthasterites furcatus and Assipetra terebrodentarius. Although Marthasterites furcatus can be very common in well-preserved and diverse shelf and epicontinental Coniacian...
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Journal Article
Published: 01 July 2004
Journal of the Geological Society (2004) 161 (4): 703–709.
... specimens of species Assipetra infracretacea (Thierstein) and Assipetra terebrodentarius (Applegate, Bergen, Covington & Wise) are common. Despite the absence of the standard biostratigraphic markers, such as Eiffellithus turriseiffelii (Deflandre) and Corollithion kennedyi Crux, the assemblage...
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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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Journal Article
Published: 01 June 2015
Italian Journal of Geosciences (2015) 134 (2): 200–218.
...) Michrantolithus obtusus , crossed nicols. Sample CDP92; 5) Lithraphidites carniolensis , parallel light. Sample CDP92; 6) Assipetra terebrodentarius , crossed nicols. Sample CDP91. ...
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Journal Article
Published: 01 February 2018
Geological Magazine (2018) 155 (2): 377–421.
...Table 2. Nannofossil associations in the LBFb Unit LBFb Sample Abundance Preservation Calcareous Nannofossil Assemblage Age GR09 F B Assipetra infracretacea, Calcicalathina oblongata, Cyclagelosphaera margerelii, Cruciellipsis cuvillieri, Diazomatolithus lehmanii...
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Journal Article
Published: 01 July 2004
Geological Magazine (2004) 141 (4): 401–416.
... through the entire section (Fig. 3 ). However, the interval −12 to −0.1 m (26.8 to 14.9 m below the uppermost black shale) may be assigned to the lower Aptian, based on the presence of the nannofossils Assipetra infracretacea larsonii , Hayesites irregularis and Rucinolithus terebrodentarius youngii...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2004
DOI: 10.1144/GSL.SP.2004.229.01.07
EISBN: 9781862394773
... of the nannofossil Assipetra infracretacea ( Bergen 2004 ) at 1183A- 50R-2, 78 cm (1090.48 mbsf). Planktonic foraminifera are nearly absent from this section, which is dominated by spherical radiolaria. However, a single specimen of the species Rotalipora appenninica at 50R-CC, 13–16 cm (1091.73 mbsf) indicates...
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Journal Article
Published: 01 December 2000
Petroleum Geoscience (2000) 6 (4): 309–328.
... by the FDO of common Assipetra infracretacea/terebrodentarius ; a short-lived influx of Rotellapillus crenulatus and FDO of Braarudospheara batilliformis occur towards the base of this sequence. The lower boundary is defined by the FDO of common Pseudoceratium distinctum (P), the FDO of Stephodinium...
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Journal Article
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 October 2015
GeoArabia (2015) 20 (4): 125–180.
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Journal Article
Published: 01 October 2005
Micropaleontology (2005) 51 (4): 319–332.
...) Perch-Nielsen 1984 Corollithion exiguum Stradner (1961) Corollithion kennedyi Crux (1981) Corollithion signum Stradner (1963) Corollithion Stradner (1961) Ahmuellerella octoradiata (Gorka 1957) Reinhardt (1964) Amphizygus brooksi Bukry 1969 Assipetra...
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Journal Article
Published: 01 September 2000
Petroleum Geoscience (2000) 6 (3): 231–240.
... Sandstone Upper Member, Britannia Formation Late Aptian 6 Captain Sandstone Member, Wick Formation N/A N/A Assipetra Sandstone Unit Zone 45, Zone 40 Kilda Member, Britannia Formation Upper Member, Britannia Formation Early Aptian 5 Captain Sandstone Member, Wick Formation N/A Captain B...
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Journal Article
Published: 01 February 2019
Italian Journal of Geosciences (2019) 138 (1): 88–102.
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Journal Article
Published: 01 May 2001
Geological Magazine (2001) 138 (3): 277–298.
... the base of the section. The assemblages are dominated by the Watznaueria group, especially in the black shales. Species abundant in this interval include Assipetra infracretacea, Biscutum constans, Chiastozygus litterarius, Flabellites oblongus, Lithraphidites carniolensis, Manivitella pemmatoidea...
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