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Obruchevella

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Journal Article

Obruchevella and other microfossils in the Burgess Shale; preservation and affinity

Carol Mankiewicz
Published: 01 October 1992
Journal of Paleontology (1992) 66 (5): 717–729.
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Journal Article

Obruchevella from the Early Cambrian Meishucun Stage of the Meishucun Section, Jinning, Yunnan, China

Song Xueliang
Published: 01 May 1984
Geological Magazine (1984) 121 (3): 179–183.
...Song Xueliang Abstract Well-preserved, silicified Obruchevella from the earliest Cambrian (Meishucun Stage) sequence from Meishucun Section in Yunnan Province, China contains distinct cross-partitioning. This suggests that this helically coiled microfossil is the remains of an oscillatorialean...
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Filamentous and coccoidal microfossils. (1) Obruchevella minor Zhang, 1984a, PB202091, thin section 18JSC-2-4, T22/2. (2) Salome svalbardense Knoll, 1982, PB202092, thin section 21LHK-1-6, J38. (3, 4) Salome hubeiensis Zhang, 1986: (3) PB202093, thin section 19TP-1-40, J33/3, (4) PB202094, thin section 19CW-6-14, J36/2. (5) Bundled filaments resembling Polytrichoides Hermann, 1974, emend. Hermann in Timofeev et al., 1976, PB202095, thin section 19HP-2-6, M40. (6) Septate trichome with cells much wider than length resembling Oscillatoriopsis Schopf, 1968, emend. Butterfield et al., 1994, PB202096, thin section 19HP-2-3, Q38/3. (7, 8) Aggregated coccoids resembling Myxococcoides Schopf, 1968: (7) PB202097, thin section 21LHK-1-10, Q43/2; (8) PB202098, thin section 21LHK-1-10, N48/3.

Filamentous and coccoidal microfossils. ( 1 ) Obruchevella minor Zhang, ...

Published: 01 November 2024
Figure 36. Filamentous and coccoidal microfossils. ( 1 ) Obruchevella minor Zhang, 1984a , PB202091, thin section 18JSC-2-4, T22/2. ( 2 ) Salome svalbardense Knoll, 1982 , PB202092, thin section 21LHK-1-6, J38. ( 3 , 4 ) Salome hubeiensis Zhang, 1986 : ( 3 ) PB202093, thin section 19TP
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Figure 15

Filamentous microfossils: ( 1, 2 ) Obruchevella parva ; ...

Published: 01 September 2016
Figure 15 Filamentous microfossils: ( 1, 2 ) Obruchevella parva ; ( 3, 10 ) Siphonophycus typicum ; ( 4 ) Cyanonema sp.; ( 5 ) S. typicum and Polythricoides lineatus ; ( 6 ) S. solidum ; ( 7 ) S. septatum ; ( 8, 14 ) R. tenuis ; ( 9 ) P
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Figure3—1–6,Wengania minuta n. sp.; 7, Obruchevella filament within Salome hubeiensisZhang, 1986 sheaths, 8, 9, Meghystrichosphaeridium chadianensis (Chen and Liu, 1986) and 10, 11, Dicrospinasphaera zhangii (Yuan and Hofmann, 1998). 1, HUHPC-64826, thin section NTC-4-8-2, coordinates 24.7 × 127.5; 2, HUHPC-64827, thin section NTC-4-1-1, coordinates 24.7 × 95.7; 3, HUHPC-64828, thin section NTC-4-5-2, coordinates 16.6 × 106; 4, HUHPC-64829, thin section NTC-4-7-4, coordinates 40.9 × 120; 5, HUHPC-64830, thin section NTC-4-7-2, coordinates 37.6 × 125; 6, holotype, HUHPC-64831, thin section NTC-4-12-1, coordinates 32.2 × 110.5. 7, arrows indicate turning points of helical filament within multiple layered sheaths. HUHPC-64832, thin section NTC-4-5-2, coordinates 13.1 × 125.5; 8, 9, two views, at different focus levels, of the same specimen of M. chadianensis. Arrows point to characteristic processes of M. chadianensis. HUHPC-64833, thin section NTC-4-7-5, coordinates 45.7 × 133.3; 10, 11, two views, at different focus levels, of the same specimen of D. zhangii. Arrows point to solid, branching processes characteristic of D. zhangii. HUHPC-64834, thin section NTC-4-7-3, coordinates 41.2 × 107.7. Scale bar in 1 represent 50 μm for 1–6 and 8–11 and 200 μm for 7

Figure 3 — 1–6, Wengania minuta n. sp.; 7 , Obruchevella filament wit...

Published: 01 February 2004
Figure 3 — 1–6, Wengania minuta n. sp.; 7 , Obruchevella filament within Salome hubeiensis Zhang, 1986 sheaths, 8, 9 , Meghystrichosphaeridium chadianensis ( Chen and Liu, 1986 ) and 10, 11 , Dicrospinasphaera zhangii ( Yuan and Hofmann, 1998 ). 1, HUHPC-64826, thin section NTC-4-8
Journal Article

Organic-Walled Microfossils from the Bedded Black Chert of the Krol Formation (Vendian), Solan Area, Himachal Pradesh, India

S. Kumar, Vibhuti Rai
Published: 01 March 1992
Jour. Geol. Soc. India (1992) 39 (3): 229–234.
DOI: https://doi.org/10.17491/jgsi/1992/390308
...S. Kumar; Vibhuti Rai Abstract Well preserved microfossils are reported from petrographic thin sections of the bedded black chert from the Krol 'A' Member of the Krol Formation near Solan. Himachal Pradesh. Filamentous forms comparable to Eomycetopsis Schopf, Siphonophycus Schopf, Obruchevella...
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Journal Article

PYRITIZED CRYOGENIAN CYANOBACTERIAL FOSSILS FROM ARCTIC ALASKA

KELSEY R. MOORE, TANJA BOSAK, FRANCIS MACDONALD, KIMBERLY DU, SHARON A. NEWMAN, DANIEL J. G. LAHR, SARA B. PRUSS
Journal: PALAIOS
Published: 19 December 2017
PALAIOS (2017) 32 (12): 769–778.
DOI: https://doi.org/10.2110/palo.2017.063
... helically coiled, straight, and curved fossils composed of fine crystalline or framboidal pyrite in limestone samples from the Ikiakpuk formation of Arctic Alaska. These structures are morphologically identical to fossils of Obruchevella , a cyanobacterial form genus reported in pre-Sturtian and post...
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Filamentous microfossils. (1, 2) Carbonized filaments identified by Sharma et al. (2021) as Botominella lineata Reitlinger, 1959; (1), DH-14-65.0-B, 18.6 × 107.0, EF-J7-3, VPIGM-4835; (2), DH-14-68.0-A-2, 4.5 × 116.2, EF-Y16-1, VPIGM-4862; (3) Obruchevella sp., S4-4-F2-5, 12.5 × 109.5, EF-Q9-2, VPIGM-4877; (4) Obruchevella sp. (arrow) and Siphonophycus spp., DH-14-68.0-B-2, 14.5 × 118.5, EF-O18-2, VPIGM-4866; (5–7) Oscillatoriopsis breviconvexa Schopf and Blacic, 1971; (5, 6), S4-4-F2-7, 11.1 × 110.8, EF-R11-3, VPIGM-4891, rectangle in (5) marks area magnified in (6); (7), DH-14-68.0-A, 12.0 × 131.2, EF-Q31-1, VPIGM-4860; (8, 9) Polytrichoides lineatus Hermann, 1974, S4-4-F2-5, 8.9 × 129.3, EF-T29-4, VPIGM-4880, same specimen at different levels, showing bundled filaments.

Filamentous microfossils. ( 1, 2 ) Carbonized filaments identified by Sharm...

Published: 01 March 2024
Figure 32. Filamentous microfossils. ( 1, 2 ) Carbonized filaments identified by Sharma et al. ( 2021 ) as Botominella lineata Reitlinger, 1959 ; ( 1 ), DH-14-65.0-B, 18.6 × 107.0, EF-J7-3, VPIGM-4835; ( 2 ), DH-14-68.0-A-2, 4.5 × 116.2, EF-Y16-1, VPIGM-4862; ( 3 ) Obruchevella sp., S4-4-F2
Journal Article

Stratigraphic setting and age of the complex Tappania -bearing Proterozoic fossil biota of Siberia

K.E. Nagovitsin, A.M. Stanevich, T.A. Kornilova
Published: 01 November 2010
Russ. Geol. Geophys. (2010) 51 (11): 1192–1198.
DOI: https://doi.org/10.1016/j.rgg.2010.10.004
... complex protists Tappania plana Yin; acritarchs Valeria lophostriata Jank., Satka sp., Lophosphaeridium sp., Pulvinosphaeridium sp., and Miroedichia sp.; porous vesicles of Tasmanites sp. and Osculosphaera sp.; vesicles with anastomosing processes, and spiral filaments of Obruchevella and Glomovertella...
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View PDF for article title, Stratigraphic setting and age of the complex Tappania -bearing Proterozoic fossil biota of Siberia
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Journal Article

Fossil Microbiota from the Vaishnodevi Limestone, Himalayan Foothills, Jammu: Age and Palaeoenvironmental Implications

B. S. Venkatachala, Ashok Kumar
Published: 01 November 1998
Jour. Geol. Soc. India (1998) 52 (5): 529–536.
DOI: https://doi.org/10.17491/jgsi/1998/520504
... spp., Sphaerocongregus sp., Obruchevella sp., Chuaria sp., Kildinosphaera sp. , Spiromorpha indet . and vase shaped microfossils (VSMs). The Muttal biota is from the topmost shale unit of Vaishnodevi Limestone and is assigned a Neoproterozoic age. It is concluded that the age of the Vaishnodevi...
View PDF for article title, Fossil Microbiota from the Vaishnodevi Limestone, Himalayan Foothills, Jammu: Age and Palaeoenvironmental Implications
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Journal Article

Assemblages of calcareous algae near the Precambrian/Cambrian boundary in Siberia and Mongolia

Robert Riding, Larissa Voronova
Published: 01 May 1984
Geological Magazine (1984) 121 (3): 205–210.
...Robert Riding; Larissa Voronova Abstract Calcareous algae make their first appearance near the base of the Tommotian. The oldest confirmed occurrences are of ?Gemma, Obruchevella and Renalcis in the Nemakit-Daldyn Horizon and late Yudomian of Siberia. A little higher in the sequence...
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Paleontology of Khesen Formation (northern Mongolia) revealed by 20% acetic acid maceration. A: Archaeophycus yunnanensis showing T cell division, Yale Peabody Museum (YPM) specimen 538070. B–C: Cavaspina ?basiconica. B: YPM 538071. C: YPM 538072. D–E: Megasphaera sp. D: YPM 538073. E: YPM 538074. F: Obruchevella magna, YPM 538075. Scale bars 100 μm.

Paleontology of Khesen Formation (northern Mongolia) revealed by 20% acetic...

Published: 19 October 2017
538073. E: YPM 538074. F: Obruchevella magna , YPM 538075. Scale bars 100 μm.
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Taxa common to the Dzhelindukon (1–9) and Debengde (10–18) biota: 1, 10, Lophosphaeridium sp. with coarse tubercular ornamentation; 2, 11, Lophosphaeridium sp. with elongate claviform processes; 3, 12, Lophosphaeridium sp. with large, short processes; 4, 13, fragment of a large filament with a claviform apex; 5, 14, Glomovertella sp.; 6, 15, Osculosphaera sp.; 7, 16, Obruchevella sp.; 8, 17, remains of large trichome-like forms with narrow cells; 9, 18, short trichomes with arcuate medial cells and lenticular terminal cells.

Taxa common to the Dzhelindukon (1–9) and Debengde (10–18) biota: 1, 10, L...

Published: 01 November 2010
filament with a claviform apex; 5, 14, Glomovertella sp.; 6, 15, Osculosphaera sp.; 7, 16, Obruchevella sp.; 8, 17, remains of large trichome-like forms with narrow cells; 9, 18, short trichomes with arcuate medial cells and lenticular terminal cells.
Journal Article

NEW DATA ON BAIKALIAN MICROFOSSILS OF THE PATOM UPLAND

M. Sh. Faizullin
Published: 01 March 1998
Russ. Geol. Geophys. (1998) 39 (3): 338–347.
... Moczydlowska et al., Trachyhystrichosphaera sp., Ooidium sp.1, O. sp. 2, Leiofusidium dubium (Jank.); and filamentous microfossils: Obruchevella sp., Elatera (?) sp., Polytrichoides lineatus Hermann, Palaeolyngbya sp., Palaeovaucheria clavata Hermann, Botuobia patomica Kolosov...
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NEW MULTICELLULAR ALGAL FOSSILS AND ACRITARCHS IN DOUSHANTUO CHERT NODULES (NEOPROTEROZOIC; YANGTZE GORGES, SOUTH CHINA)

SHUHAI XIAO
Published: 01 February 2004
Journal of Paleontology (2004) 78 (2): 393–401.
DOI: https://doi.org/10.1666/0022-3360(2004)078<0393:NMAFAA>2.0.CO;2
...Figure 3 — 1–6, Wengania minuta n. sp.; 7 , Obruchevella filament within Salome hubeiensis Zhang, 1986 sheaths, 8, 9 , Meghystrichosphaeridium chadianensis ( Chen and Liu, 1986 ) and 10, 11 , Dicrospinasphaera zhangii ( Yuan and Hofmann, 1998 ). 1, HUHPC-64826, thin section NTC-4-8...
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View PDF for article title, NEW MULTICELLULAR ALGAL FOSSILS AND ACRITARCHS IN DOUSHANTUO CHERT NODULES (NEOPROTEROZOIC; YANGTZE GORGES, SOUTH CHINA)
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Biota in ferrosiliceous deposits and metasedimentary rocks of the Lower Cambrian Tumat-Taiga Formation in the Kyzyl–Tashtyg ore field, Eastern Tuva. Fig. 1–3, 9, monocyatheans: 1, long section, 2, 3, 9, cross section, thin section KZT-9. Fig. 4, 5, Renalcis sp., thin section KZT-9. Fig. 6, Botomaella sp., thin section KZT-9. Fig. 7, 8, Tetraxonida (Fig. 7) and Hexactinellida (Fig. 8) sponge spicules, thin section KZT-11. Fig. 10, Obruchevella sp., thin section KZT-9. All measurements were made with 100 µm rulers.

Biota in ferrosiliceous deposits and metasedimentary rocks of the Lower Cam...

Published: 01 January 2014
. Fig. 6, Botomaella sp., thin section KZT-9. Fig. 7, 8, Tetraxonida (Fig. 7) and Hexactinellida (Fig. 8) sponge spicules, thin section KZT-11. Fig. 10, Obruchevella sp., thin section KZT-9. All measurements were made with 100 µm rulers.
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Geographical location, structure, and correlation of composite sections in the Baikit (1), Katanga (2), and Olenek (3) areas. 1, limestones; 2–7, dolomites: 2, micritic; 3, argillaceous; 4, a, sandy, 4, b, intraclastic; 5, a, stratiform stromatolitic, 5, b, columnar stromatolitic; 6, a, gravelstones, 6, b, conglomerates; 7, sandstones; 8, siltstones; 9, mudstones; 10, dolerites; 11–22, taxa making up the microfossil assemblage: 11, Tappania; 12, Lophosphaeridium with small processes; 13, Lophosphaeridium with claviform processes; 14, Valeria, 15; Miroedichia, 16; Pulvinosphaeridium, 17; Osculosphaera, 18; Tasmanites, 19; fragments of filaments with claviform apices; 20, Obruchevella; 21, Glomovertella; 22, short trichomes with arcuate medial cells and lenticular terminal cells.

Geographical location, structure, and correlation of composite sections in ...

Published: 01 November 2010
processes; 14 , Valeria , 15 ; Miroedichia , 16 ; Pulvinosphaeridium , 17 ; Osculosphaera , 18 ; Tasmanites , 19 ; fragments of filaments with claviform apices; 20 , Obruchevella ; 21 , Glomovertella ; 22 , short trichomes with arcuate medial cells and lenticular terminal cells.
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Filaments and acritarchs (small). (a–b) Smooth sheaths of Siphonophycus. (c) Possible fragment of Cephalonyx-type filament showing regular transverse banding. (d–g) Typical fragments of Rugosoopsis. (h–n) Specimens of Obruchevella, comprising chains of cell rings. (i, l) Show laterally displaced rings. Scale bar represents 100 µm. (a–n) 7.53 m Saarijärvi M52/3533/84/313 core. All specimen numbers have the prefix PMU 38: (a) 165/9; (b) 165/10; (c) 165/11; (d) 165/12; (e) 165/13; (f) 165/14; (g) 165/15; (h) 165/16; (i) 165/17; (j) 165/18; (k) 165/19; (l) 165/20; (m) 165/21; (n) 165/22.

Filaments and acritarchs (small). (a–b) Smooth sheaths of Siphonophycus . ...

Published: 24 August 2021
Fig. 8. Filaments and acritarchs (small). (a–b) Smooth sheaths of Siphonophycus . (c) Possible fragment of Cephalonyx -type filament showing regular transverse banding. (d–g) Typical fragments of Rugosoopsis . (h–n) Specimens of Obruchevella , comprising chains of cell rings. (i, l) Show
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Matted filaments. (a) Interwoven filamentous mat. (b) Sinuous ribbon-like filaments on surface of mat, alongside chain of pyritized trichome. (c) Mixture of Siphonophycus, Rugosoopsis and pyrite-encrusted filaments (arrow points to necridia within Rugosoopsis-type filament). (d) Dense mat of Rugosoopsis exhibiting pyrite encrustation (arrow points to prominent necridia). (e) Pyrite-encrusted filaments. (f) Coiled Obruchevella-type filament within mat. (g) Degraded mat with prominent Rugosoopsis filament (white arrow points to necridia). Scale bars represent 200 µm (a, b, d); 100 µm (c, e–g). (a–g) 72.70 m M52-Hail-04-004 core. All specimen numbers have the prefix PMU 38: (a) 164/5; (b) 163/7; (c) 163/8; (d) 163/9; (e) 164/2; (f) 163/10; (g) 164/3.

Matted filaments. (a) Interwoven filamentous mat. (b) Sinuous ribbon-like f...

Published: 24 August 2021
) Dense mat of Rugosoopsis exhibiting pyrite encrustation (arrow points to prominent necridia). (e) Pyrite-encrusted filaments. (f) Coiled Obruchevella -type filament within mat. (g) Degraded mat with prominent Rugosoopsis filament (white arrow points to necridia). Scale bars represent 200 µm (a, b
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Figure8—1, 2, Siphonophycus solidum (Golub, 1979), comb. Butterfield, 1994: 1, CSEOL-T.S. # 4285-36, Chichkan Raman specimen (Schopf et al., 2005), stage coordinates 51.2 × 110.3, S50[2]; 2, CSEOL-T. S. # 4681-68D, 3A, 34.2 × 113.4, D34[0]. 3, 3a, Jacutianema solubilaTimofeev and Hermann, 1979, emend. Butterfield, 2004, 4681-989 (74), p. 34, G46[4], GINPC 1020, the arrow in 3 pointing to the part of the specimen shown in 3a; 4a, 4b, Obruchevella exilisSergeev, 1992, 4681-255 (26), p. 13, P23[2], GINPC 154, shown in 4a and 4b at two different focal depths; 5, Siphonophycus kestronSchopf, 1968, 4681-266 (30), p. 13, S25[0], GINPC 142. Single lines for scale  =  10 µm, double lines  =  50 µm

Figure 8 — 1 , 2 , Siphonophycus solidum ( Golub, 1979 ), comb. Butter...

Published: 01 May 2010
Timofeev and Hermann, 1979 , emend. Butterfield, 2004 , 4681-989 (74), p. 34, G46[4], GINPC 1020, the arrow in 3 pointing to the part of the specimen shown in 3a ; 4a , 4b , Obruchevella exilis Sergeev, 1992 , 4681-255 (26), p. 13, P23[2], GINPC 154, shown in 4a and 4b at two different focal