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36 results for “Smithian-Spathian”
Fig. 27 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 27 Hadrodontinae from Qiakong, Laren, Shanggang and Lilong. Magnification is × 80. The scale bar is 400 μm. All elements are considered to beP1 elements if not specifically identified otherwise. A, Hadrodontina aequabilis (S2 element) (Staesche); SHA344, PIMUZ 39141. B–E, Hadrodontina aequabilis (P2 element) (Staesche); B LAR214, PIMUZ 39142; C QIA13, PIMUZ 39143; D LIL500, PIMUZ 39144, E SHA344, PIMUZ 39145. F–M Hadrodontina aequabilis (Staesche); F LIL502, PIMUZ 39146; G LIL503, PIMUZ 39147; H QIA134, PIMUZ 39148; I QIA134, PIMUZ 39149; J QIA 133, PIMUZ 39150; K LIL502, PIMUZ 39151; L LIL501, PIMUZ 39152; M LIL501, PIMUZ 39153
Fig. 25 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 25 Novispathodinae from Laren, Shanggang and Lilong. Magnification is × 80. The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A–F, Icriospathodus zaksi (Buryi); A LAR205, PIMUZ 39170; B LIL508, PIMUZ 39171; C LIL508, PIMUZ 39172; D LAR204, PIMUZ 39173; E LIL510, PIMUZ 39174; F LAR203, PIMUZ 39175. G–L Icriospathodus aff. crassatus (Orchard); G LIL510, PIMUZ 39159; H LIL508, PIMUZ 39160; I LAR203, PIMUZ 39161; J LIL509, PIMUZ 39162; K LAR202, PIMUZ 39163; L LAR210, PIMUZ 39164. M, O, P Icriospathodus collinsoni (Solien); M SHA313, PIMUZ 39165; O SHA320, PIMUZ 39166; P LIL515A, PIMUZ 39167. N Triassospathodus symmetricus (Orchard); SHA320, PIMUZ 39319
Fig. 24 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 24 Novispathodinae and uncertain from Qiakong, Laren,Shanggang, and Lilong. Magnification is ×80.The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A, D, G, H Triassospathodus homeri (Bender);A LIL515C,PIMUZ 39313; D QIA155, PIMUZ 39314;G LIL513B, PIMUZ 39315; H LIL515B, PIMUZ 39316. B, E, F Triassospathodus aff. symmetricus (Orchard);B QIA138, PIMUZ 39306; E LIL505,PIMUZ 39307; F QIA136, PIMUZ 39308. C, I–Q Triassospathodus symmetricus (Orchard); C QIA140,PIMUZ 39326; I SHA313, PIMUZ 39327;J QIA143, PIMUZ 39328; K QIA144, PIMUZ 39329;L QIA141, PIMUZ 39330; M LIL515D, PIMUZ 39331; N LIL509, PIMUZ 39332; O LIL513B,PIMUZ 39333; P LIL513B,PIMUZ 39334;Q LIL513A, PIMUZ 39335.R–T Aduncodina unicosta (Ding); R BAN5, PIMUZ 39100;S SHA320,PIMUZ 39101; T SHA318,PIMUZ 39102
Fig. 23 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 23 Novispathodinae from Qiakong, Laren, Shanggang and Lilong. Magnification is × 80. The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A, B, D, E, H, I, Triassospathodus symmetricus (Orchard); A, LIL509, PIMUZ 39320; B, LIL509, PIMUZ 39321; D, QIA202, PIMUZ 39322; E, LIL509, PIMUZ 39323; H, LIL509, PIMUZ 39324; I, BAN2, PIMUZ 39325. C, F, G, Triassospathodus homeri (Bender); C, LAR231C, PIMUZ 39310; F, QIA155, PIMUZ 39311; G, SHA318, PIMUZ 39312
Fig. 22 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 22 Novispathodinae from Laren and Lilong. Magnification is × 80. The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A, D Icriospathodus cf. crassatus? (Orchard); A BAN1, PIMUZ 39168; D LIL513A, PIMUZ 39169. B, E Novispathodus brevissimus (Orchard); B LIL513B, PIMUZ 39194; E LIL514A, PIMUZ SQL55056. C, F Novispathodus cf, brevissimus (Orchard); C LIL513A, PIMUZ 39196; F, LIL514A, PIMUZ 39198
Fig. 21 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 21 Novispathodinae from Qiakong, Laren, Shanggang and Lilong. Magnification is × 80. The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A–J, L, M, Novispathodus brevissimus (Orchard); A LIL515A, PIMUZ 39184; B LIL513A, PIMUZ 39185; C BAN2, PIMUZ 39186; D SHA312, PIMUZ 39187; E SHA313, PIMUZ 39188; F LIL515A, PIMUZ 39189; G LIL509, PIMUZ 39190; H LIL509, PIMUZ 39191; I LIL514B, PIMUZ 39192; J LIL509, PIMUZ 39193; L QIA141, PIMUZ 39195; M QIA144, PIMUZ 39197. K, Novispathodus clinatus (Orchard and Sweet in Orchard); BAN5, PIMUZ 39207
Fig. 28 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 28 Hadrodontinae from Shanggang. Magnification is × 80. The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A, C, E Hadrodontina aequabilis (Staesche); A SHA 345C, PIMUZ 39154; C SHA345C, PIMUZ 39155; E SHA344C, PIMUZ 39156. B, D Hadrodontina aequabilis (P2 element) (Staesche); B SHA345C, PIMUZ 39157; D SHA345C, PIMUZ 39158
Fig. 19 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 19 Novispathodinae from Qiakong, Laren and Lilong. Magnification is × 80. The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A Novispathodus cf. brevissimus (Orchard); LIL515C, PIMUZ 39199. B, F Novispathodus brevissimus (Orchard); B LIL515B, PIMUZ 39200; F BAN1, PIMUZ 39201. C Triassospathodus homeri (Bender); LIL515D, PIMUZ 39317. D, H Novispathodus?brevissimus (Orchard); D LIL515D, PIMUZ 39202; H LIL514A, PIMUZ 39203. E Triassospathodus cf. homeri (Bender); LIL515C, PIMUZ 39318. G, K, O–Q Novispathodus n. sp. A; G LIL504, PIMUZ 39251; K LIL504, PIMUZ 39252; O LIL505, PIMUZ 39253; P LIL505, PIMUZ 39254; Q LIL505, PIMUZ 39255. I, L, M, Triassospathodus symmetricus (Orchard); I QIA141, PIMUZ 39336; L LIL512, PIMUZ 39337; M LIL514A, PIMUZ 39338. J Novispathodus ex gr. pingdingshanensis (Zhao & Orchard); QIA138, PIMUZ 39237. N Triassospathodus cf. symmetricus; LIL514B, PIMUZ 39339. R Novispathodus praebrevissimus n.sp; LIL505, PIMUZ 39289
Fig. 15 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 15 Neogondolellinae and Mullerinae from Qiakong, Laren and Shanggang. Magnification is × 80. The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A, D Neospathodus bevelledi n. sp.; A SHA333, PIMUZ 39176; D, SHA332, PIMUZ 39177. B, J Discretella aff. discreta (MÜller); B SHA304, PIMUZ 39104; J SHA334, PIMUZ 39105. C, L Discretella discreta (MÜller); C SHA334, PIMUZ 39107; L SHA332, PIMUZ 39108. E Guangxidella bransoni (MÜller); SHA304, PIMUZ 39139. F, H, K, M, P Discretella pseudodieneri n. sp.; F QIA124, PIMUZ 39120; H QIA124, PIMUZ SQL54990; K QIA121, PIMUZ 39121; M QIA120, PIMUZ 39122; P LAR232, PIMUZ 39123. G Discretella cf. discreta (MÜller); QIA120, PIMUZ 39109. I sp. indet.; QIA120, PIMUZ 39294. N Discretella? n. sp. B; LAR232, PIMUZ 39112. O Discretella? n. sp. C; SHA342, PIMUZ 39114
Fig. 14 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 14 Neogondolellinae, Novispathodinae and uncertain from Shanggang. Magnification is × 80. The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A, Eurygnathodus costatus (Staesche); SHA325, PIMUZ 39130. B Eurygnathodus hamadai (Koike); SHA326, PIMUZ 39131. C, D, F, G Novispathodus ex gr. waageni (Sweet); C SHA328, PIMUZ 39238; D SHA328, PIMUZ 39239; F SHA325, PIMUZ 39240; G SHA326, PIMUZ 39241. E Neospathodus ex gr. cristagalli (Huckriede); SHA330, PIMUZ 39182. H Neospathodus dieneri (Sweet); SHA338, PIMUZ 39181
Fig. 12 Calibration between U in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 12 Calibration between U-Pb ages and fossiliferous beds, UAZs, δ13Crecord, climatic proxies and conodont diversity. A U–Pb ages (after carb Widmann et al., 2020). B Geological timescales with Early Triassic substages C ammonoid biochronozones modified from Brayard and Bucher (2008), D Conodont beds from South China (this work), E Newly established conodont UAZs from South China. See Figs. 3, 4, 5, 6, 7, 8, 9. F Evolution of the composite δ13Crecord during the Smithian and early Spathian from Qiakong, Laren, Shanggang, Lilong (see also Figs. 3, 4, 5, 6). G Temporal carb evolution of species- genera- and subfamily-diversity (after Fig. 10), H δ18Cfrom conodont apatite from Pakistan (after Goudemand et al., 2019). phos I: Palynological events (after Hermann et al. 2011)
Fig. 10 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 10 Temporal evolution of species- genera- and subfamily-diversity (succession of UAZs) for all the characteristic (part of UAZ) conodonts from South China during the Smithian and Spathian interval. Calculated from the optimal solution given in Fig. 8. Note the Early Smithian and Early Spathian radiation and the late Smithian and middle/late Spathian extinction. Absolute ages from Widmann (2019) and Widmann et al., (2020)
Fig. 1 A in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 1 A Locations of the studied sections in the Nanpanjiang Basin (Luolou platform) (modified from Bagherpour et al., 2017). a—flood alluvial facies, b—shallow water siliclastic deposit, c—carbonate platform, d—slope, e—basin. Sections: 1—Qiakong, 2—Laren, 3—Shanggang, 4—Lilong, 5—Youping cascade. B Simplified palaeogeographical map of the Early Triassic (modified after the PANALESIS plate tectonic model of Vérard, 2019) South China indicated with a star
Fig. 8 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 8 Sequences of Unitary Association (UAs), Unitary Associations Zones (UAZs), lateral reproducibility and dissimilarity index (D) resulting from the biochronological analyses of the 19 sections in South China from the final run. Note the grey shades in the upper figure with rather poor lateral reproducibility and/or poor dissimilarity index of the UA2, UA3, UA4, UA5, UA6, UA7, UA9, UA10, UA11, UA12, UA13, UA14, UA15, UA16, UA17, UA18, UA19, UA20, UA21 and UA22. This 20 UAs were merged into a final total of 11 UAZs (lower figure)
Fig. 11 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 11 Faunal turnover rate for all the relying conodont UAZs from South China during the Smithian and Spathian interval. Calculated from the optimal solution given in Fig. 8. Note the early Smithian and early Spathian radiation and the late Smithian and middle/late Spathian extinction
Fig. 5 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 5 Shanggang. Detailed stratigraphic log of the studied interval of the Shanggang section showing the distribution of conodont taxa and the δ13Crecord throughout the Smithian and Spathian part of the Luolou Formation. The LMHs and UAZ are indicated. Note the gap because of low carb angle faulting in the upper part of the black shales
Fig. 6 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 6 Lilong. Detailed stratigraphic log of the studied interval of the Lilong section showing the distribution of conodont taxa and the δ13Ccarb record throughout the late Smithian and Early Spathian part of the Luolou Formation. The LMHs and UAZs are indicated
Fig. 7 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 7 Youping Cascade. Detailed stratigraphic log of the studied interval of the Youping Cascade section showing the distribution of conodont taxa and the δ13Crecord throughout the late Smithian and Early Spathian part of the Luolou Formation. The LMHs and UAZs are indicated carb
Fig. 9 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 9 Position of the UAZs in the studied sections Qiakong, Laren, Shanggang, Lilong and Youping Cascade. The lithological units are simplified and represented from unit III to unit Vc. Note the ammonoid zones recorded from Laren, Shanggang, Lilong and Youping Cascade
Fig. 4 in A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China
Fig. 4 Laren. Detailed stratigraphic log of the studied interval of the Laren section showing the distribution of conodont taxa and the δ13Ccarb record throughout the Smithian and Spathian part of the Luolou Formation. The LMHs and UAZs are indicated
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