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Stephanopyxis

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figs 1–12.  Diatoms and problematica:  1, 2,  cf.  <b>Stephanopyxis</b>  sp.; the ...
Published: 01 May 2009
Explanation of Plate 2. figs 1–12. Diatoms and problematica: 1, 2, cf. Stephanopyxis sp.; the framboids have not completely grown together and on their surfaces some pores can be recognized (38-121.8); 3, gen. et sp. indet., sphere with a notch well-preserved fine polygonal reticulum
Journal Article
Journal: Geology
Published: 01 January 2009
Geology (2009) 37 (1): 83-86.
.... Approximately 70 inclusions were assignable to the genera Basilicostephanus, Coscinodiscus, Hemiaulus, Melosira, Paralia, Skeletonema, Stephanopyxis, Trochosira, ?Aulacoseira, and to the order Rhizosoleniales. Some of them are represented by several species. This diatom assemblage is mainly composed of colonial...
FIGURES
Image
Marine diatoms preserved in late Albian French amber. A: Girdle view of Bas...
in > Geology
Published: 01 January 2009
: Different girdle views of Stephanopyxis. N: Valval view of Stephanopyxis. O: Colony of Trochosira. P: Colonies of ?Aulacoseira. Scale bars: A, G, I, L, M, O, and P—10 μm; B–E and K—20 μm; F, H, and N—5 μm; J—50 μm.
Image
Summary of the seasonal flux cycle of the Marca Shale showing, from left, b...
in > Geology
Published: 01 January 2012
Figure 2. Summary of the seasonal flux cycle of the Marca Shale showing, from left, backscattered electron image, summary cartoon, and topographic scanning electron microscopy images of (from top) Stephanopyxis -dominated ooze, Azpeitiopsis morenoensis laminae (three valves showing
Image
Scanning electron microscope (SEM) backscattered electron imagery (BSEI) ph...
in > Geology
Published: 01 August 2012
is also evident in low abundance: e.g., ebridians (Eb), silicoflagellates (Sf), and diatoms Anaulus arcticus (An), Goniothecium danicum (Go), Hemiaulus spp. (He), and Stephanopyxis spp. (St), among others. Gray areas are clay rich and larger bright nonbiogenic elements are silt- and sand-sized
Journal Article
Journal: Geology
Published: 01 October 2000
Geology (2000) 28 (10): 887-890.
... by the diatoms Pyxilla sp., Stephanopyxis splendidus ( T. hydra ), and Stephanopyxis grunowii (D.M. Harwood and J. Whitehead, 1999, personal commun.). At an intermediate elevation on Fisher Massif (∼100–500 masl), the middle Miocene age of the Fisher Bench Formation is based on the presence of the diatoms...
FIGURES
Journal Article
Journal: Geology
Published: 01 January 2012
Geology (2012) 40 (1): 15-18.
...Figure 2. Summary of the seasonal flux cycle of the Marca Shale showing, from left, backscattered electron image, summary cartoon, and topographic scanning electron microscopy images of (from top) Stephanopyxis -dominated ooze, Azpeitiopsis morenoensis laminae (three valves showing...
FIGURES
Journal Article
Published: 01 May 2009
Journal of Micropalaeontology (2009) 28 (1): 45-52.
...Explanation of Plate 2. figs 1–12. Diatoms and problematica: 1, 2, cf. Stephanopyxis sp.; the framboids have not completely grown together and on their surfaces some pores can be recognized (38-121.8); 3, gen. et sp. indet., sphere with a notch well-preserved fine polygonal reticulum...
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Series: The Micropalaeontological Society, Special Publications
Published: 01 January 2010
DOI: 10.1144/TMS004.9
EISBN: 9781862396227
... Order MELOSIRALES Crawford, in Round et al ., 1990 Family STEPHANOPYXIDACEAE Nikolaev, 1983 Genus Stephanopyxis Ehrenberg, 1845 Description: Valves domed, hemispherical to discoid; without obvious distinction into valve face and mantle. Areolae large, hexagonal, opening outwardly...
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Journal Article
Journal: Geology
Published: 01 August 2012
Geology (2012) 40 (8): 727-730.
... is also evident in low abundance: e.g., ebridians (Eb), silicoflagellates (Sf), and diatoms Anaulus arcticus (An), Goniothecium danicum (Go), Hemiaulus spp. (He), and Stephanopyxis spp. (St), among others. Gray areas are clay rich and larger bright nonbiogenic elements are silt- and sand-sized...
FIGURES
Journal Article
Journal: Geology
Published: 01 July 2004
Geology (2004) 32 (7): 557-560.
... to fragmentation, along with small-sized reworked Tertiary diatoms, such as small specimens of Denticulopsis and Stephanopyxis , which had probably survived multiple prior shearing events (earlier glacial cycles). Sedimentary facies on the Antarctic continental shelf include a complex suite of diatomaceous...
FIGURES
Series: GSA Field Guide
Published: 01 January 2017
DOI: 10.1130/2017.0047(03)
EISBN: 9780813756479
... locality ( Trochim and Dooley, 2010 ). In particular, the presence of both Stephanopyxis grunowii and Delphineis biseriata together indicate a correlation with Bed 15 of the Calvert Formation from other localities. Samples included abundant taxa that are associated with (or at least tolerant...
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Journal Article
Published: 01 September 2000
Journal of Sedimentary Research (2000) 70 (5): 1095-1106.
..., with the exception of rare occurrences in the upper 30 cm of the YP core of heavily silicified taxa, such as Stephanopyxis turris, Paralia sulcata, and Sheshukovia sp., which are almost certainly reworked from Tertiary strata. Silica phytoliths tend to be poorly preserved below the upper 50 cm of the cores...
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Series: Geological Society, London, Special Publications
Published: 01 January 2004
DOI: 10.1144/GSL.SP.2004.230.01.14
EISBN: 9781862394780
..., Triceratium nobile, and Stephanopyxis turris. The greatest difference is the absence, during the Ypresian, of Coscinodiscus morsianus var. moelleri, which corresponds with the Craspedodiscus moelleri described by Benda. Some cosmopolitan species, such as Craspedodiscus oblongus recorded in Early...
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Journal Article
Journal: Geosphere
Published: 01 October 2013
Geosphere (2013) 9 (5): 1286-1302.
..., 1988a , Plate 3, figs. 1–4. ( Plate 4 , image 11 herein) Rouxia californica M. Peragallo in Tempere and Peragallo, Schrader, 1973 , Plate 3, figs. 18–20, 22?, 26. Stephanopyxis grunowii Grove & Sturt, Abbott and Andrews, 1979 , Plate 5, fig. 29; Abbott and Ernisee, 1983 , Plate 9, fig...
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Journal Article
Journal: PALAIOS
Published: 01 December 2003
PALAIOS (2003) 18 (6): 477-494.
... Asteromphalus sp., Coscinodiscus sp., Cyclotella sp., Odontella aurita , and Stephanopyxis turris , respectively. Laminae also consist of only setae from Chaetoceros vegetative cells and diatom girdle bands. Laminae rich in CRS and S. costatum can be thick (5 mm), as in Slab 9. Colonial chains of S...
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Journal Article
Published: 01 January 2005
Rocky Mountain Geology (2005) 40 (1): 1-24.
... is a widespread marine genus, known from the late Cretaceous to Holocene in neritic and oceanic environments ( Sims, 1989 ; Markarova, 1993 ; Strelnikova et al., 1998 ). Expected normal-marine assemblages would also include Hemiaulus, Trinacria, Sheshukovia, and Stephanopyxis (e.g., Harwood, 1988 ; Fenner...
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