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Clarkina

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Key elements of the conodont zones  <span class="search-highlight">Clarkina</span> orientalis ,  C. meishanensis ...
Published: 01 August 2013
FIGURE 5— Key elements of the conodont zones Clarkina orientalis , C. meishanensis , C. taylorae , Hindeodus parvus , and Isarcicella staeschei characterizing PTB beds from Daxiakou. Note, all illustrated specimens are housed at the State Key Laboratory of Geological Process and Mineral
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Scale bar 100μm. All specimens from Huangshi, Hubei, China.  1  <span class="search-highlight">Clarkina</span> zh...
Published: 01 January 2004
PLATE 1 Scale bar 100μm. All specimens from Huangshi, Hubei, China. 1 Clarkina zhejiangensis Mei, upper view: Hs.84-8/4790
 2,3 Clarkina meishanensis Zhang et al., upper view: Hs.83-4/3518, 4774
 4,14 Clarkina deflecta (Wang and Wang), upper view: 4, Hs.83-4/4773; 14, Hs.80-4/4793ta
 5,16
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Scanning electron microphotographs of Late Permian and Early Triassic conod...
Published: 17 June 2019
) Hindeodus parvus Kozur and Pjatakova, sample CH43; (9) Clarkina hauschkei Kozur, sample CH35; (10) Clarkina zhangi Mei, sample CH28; (11) Clarkina yini Mei, sample CH32; (12) Isarcicella staeschei Dang and Zhang, sample CH47; (13) Clarkina orientalis Barskov and Koroleva, sample CH13; (14
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Photomicrographs of representative conodonts from the Maoershan section. (1...
Published: 03 February 2020
Figure 3. Photomicrographs of representative conodonts from the Maoershan section. (1, 2) Clarkina dukouensis Mei and Wardlaw, from Sample Bed 39; (3–5) Clarkina asymmetrica Mei and Wardlaw, from Sample Bed 34; (6–8) Clarkina leveni (Kozur, Mostler and Pjatakova), 6 from Sample Bed 27; (7–8
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Conodont P 1  elements from the Potuo section. Figured elements are stored ...
Published: 16 July 2019
Figure 9. Conodont P 1 elements from the Potuo section. Figured elements are stored in Paleontological Institute and Museum of the University of Zurich (PIMUZ), Karl Schmid-Strasse 4, 8006 Zurich, Switzerland. 1— Clarkina ? transcaucasica (PIMUZ A/I 4751). 2–4— Clarkina liangshanensis (2
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Graphic sedimentary log across the Guadalupian–Lopingian boundary at the Ti...
Published: 05 June 2017
Figure 2. Graphic sedimentary log across the Guadalupian–Lopingian boundary at the Tianfengping section, South China. S – shale; M – lime mudstone; W – wackestone; P – packstone; G – grainstone; Sa – sandstone. The conodont data is from Xia et al . ( 2006 ). C. p.p. – Clarkina postbitteri
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Conodonts across the Changhsingian beds at Ganxi section. All the samples a...
Published: 07 March 2006
Fig. 5. Conodonts across the Changhsingian beds at Ganxi section. All the samples are housed in China University of Geosciences, Wuhan, China. Each caption shows sample number, scanning electron microscopy negative number, and angle of view, respectively. Scale bar = 100 μm. (5.1–5.4) Clarkina
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Conodonts across the Changhsingian beds at Ganxi section. All the samples a...
Published: 07 March 2006
Fig. 4. Conodonts across the Changhsingian beds at Ganxi section. All the samples are housed in China University of Geosciences, Wuhan, China. Each caption shows sample number, scanning electron microscopy negative number, and angle of view, respectively. Scale bar = 100 μm. (4.1, 4.2) Clarkina
Journal Article
Published: 07 March 2006
Canadian Journal of Earth Sciences (2006) 43 (2): 121–133.
...Fig. 5. Conodonts across the Changhsingian beds at Ganxi section. All the samples are housed in China University of Geosciences, Wuhan, China. Each caption shows sample number, scanning electron microscopy negative number, and angle of view, respectively. Scale bar = 100 μm. (5.1–5.4) Clarkina...
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Scanning electron microscope (SEM) photomicrographs of conodonts from West ...
Published: 01 January 2012
) Mesogondolella sheni : (C) WBF C-125990 (22 m below formation contact), upper view; and (D) WBF C-125991 (21 m below formation contact), upper view. (E–F, H–I) Clarkina cf. changxingensis ; WBF C-125970 (0.2 m above formation contact): (E) oblique upper and (G) upper view of same specimen; (H–I) WBF C-125969
Journal Article
Published: 15 September 2017
Journal of Paleontology (2017) 91 (6): 1199–1219.
... Wuchiapingian Clarkina species is still debated. Therefore, we here review all Wuchiapingian Clarkina species from South China and figure ontogenetic growth series from juvenile to adult individuals for each valid and important species in order to revise both Wuchiapingian conodont taxonomy...
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Conodonts across the Permian–Triassic boundary in the Xiakou section. Each ...
Published: 12 March 2004
, China University of Geosciences, Wuhan, China. figs.  2.1–2.3 . Clarkina meishanensis Zhang, Lai, and Ding; (2.1) ZSJI259; 2586; lateral view. (2.2) ZSJ257-b; 1859; oblique lateral view. (2.3) ZSJI259; 2570; oblique lateral view. fig.  2.4 . Clarkina changxingensis yini Mei; ZSJ257-b; 2158
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Mg/(Mg + Ca) ratio variation for studied sections (see  Fig. 1  for locatio...
Published: 23 October 2018
—Dienerian; Sm—Smithian; Sp—Spathian; An—Anisian; Epo.—epoch; L.P.—late Permian; M.T.—Middle Triassic; Con.—conodont; C.c — Clarkina changxingensis ; C.y — Clarkina yini ; C.m — Clarkina meishanensis ; H.c — Hindeodus changxingensis ; H.p — Hindeodus parvus ; I.s — Isarcicella staeschei ; I.i
Journal Article
Published: 01 November 2007
Micropaleontology (2007) 53 (6): 433–446.
...) in these sections consisting of the Jinogondolella shannoni Zone, J. altudaensis Zone, J. xuanhanensis Zone, J. granti Zone, Clarkina postbitteri hongshuiensis Zone, C. postbitteri postbitteri Zone, C. dukouensis Zone, C. asymmetrica Zone, C. guangyuanensis Zone, and C. transcaucasica Zone in ascending order...
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High-resolution extinction rates of marine genera across the Permian/Triass...
Published: 01 August 2022
Figure 2. High-resolution extinction rates of marine genera across the Permian/Triassic boundary in South China. The extinction interval is highlighted in gray after Wang et al. ( 2014 ). Radiometric ages after Burgess and Bowring ( 2015 ). Conodont zones after Yuan et al. ( 2014 ); a, Clarkina
Journal Article
Journal: PALAIOS
Published: 01 August 2013
PALAIOS (2013) 28 (8): 523–540.
...FIGURE 5— Key elements of the conodont zones Clarkina orientalis , C. meishanensis , C. taylorae , Hindeodus parvus , and Isarcicella staeschei characterizing PTB beds from Daxiakou. Note, all illustrated specimens are housed at the State Key Laboratory of Geological Process and Mineral...
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Series: Geological Society, London, Special Publications
Published: 01 January 2004
DOI: 10.1144/GSL.SP.2004.230.01.06
EISBN: 9781862394780
...-population based taxonomic approach has been used and described. This approach usually views the entire collection within a given sample as a population and recognizes the most consistent and stable characters within that ‘sample-population’ for identification. Three related conodont species, Clarkina...
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Rarefaction curves of conodont elements with conodont zones as sampling bin...
Published: 19 July 2019
Fig. 9. Rarefaction curves of conodont elements with conodont zones as sampling bins of these four substages. 1, Hindeodus parvus Zone; 2, Isarcicella lobata Zone; 3, Isarcicella isarcica Zone; 4, Hindeodus postparvus Zone; 5, Hindeodus sosioensis Zone; 6, Clarkina carinata -Clarkina
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Photomicrographs of representative conodonts from the Maoershan section. (1...
Published: 03 February 2020
Figure 4. Photomicrographs of representative conodonts from the Maoershan section. (1–4) Clarkina dukouensis Mei and Wardlaw, 1 from Sample Bed 40-4; 2, 4 from Sample Bed 41-3; 3 from Sample Bed 40-1. (5) Clarkina sp. , from Sample Bed 43-2. (6–9) Jinogondolella xuanhanensis (Mei and Wardlaw
Journal Article
Published: 01 January 2004
Micropaleontology (2004) 50 (1): 27–44.
...PLATE 1 Scale bar 100μm. All specimens from Huangshi, Hubei, China. 1 Clarkina zhejiangensis Mei, upper view: Hs.84-8/4790
 2,3 Clarkina meishanensis Zhang et al., upper view: Hs.83-4/3518, 4774
 4,14 Clarkina deflecta (Wang and Wang), upper view: 4, Hs.83-4/4773; 14, Hs.80-4/4793ta
 5,16...
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