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Journal Article
Published: 01 March 2014
Journal of Paleontology (2014) 88 (2): 284–298.
...James G. Gehling; Bruce N. Runnegar; Mary L. Droser A bstract Ediacara fan-shaped sets of paired scratches Kimberichnus teruzzii from the Ediacara Member of the Rawnsley Quartzite, South Australia, and the White Sea region of Russia, represent the earliest known evidence in the fossil record...
FIGURES | View All (9)
Journal Article
Journal: Geology
Published: 23 September 2019
Geology (2019) 47 (11): 1034–1038.
... at crosscutting relationships. Color-coding also corresponds to Figures 3 and 4 . Locations of photos B–G shown in Figure 3 are indicated. Unlike many other subglacial unconformities of the Karoo Basin, which typically occur as hard bedrock scratches onto crystalline basement beneath the Dwyka...
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Journal Article
Journal: Geology
Published: 01 June 1993
Geology (1993) 21 (6): 515–518.
Journal Article
Journal: PALAIOS
Published: 01 October 2001
PALAIOS (2001) 16 (5): 423–424.
FIGURES
Series: Geological Society, London, Special Publications
Published: 31 March 2023
DOI: 10.1144/SP515-2020-234
EISBN: 9781786205872
FIGURES | View All (10)
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Burrows and scratches preserved on muddy substrates. A, B) Detail of paired scratch traces; note the depth of claw penetration in burrow wall (yellow arrow), forming chevron-like structures. C) Detail of the burrow wall; note the smooth (green arrow) and sharp features (yellow arrow) of the inner burrow wall. The red arrows indicate the chevron-like structure produced during excavation. D) Detail of subtle scratch traces (yellow arrow) in a mixed mud-sand substrate. E) Detail of the different observed morphotypes and their toponomic characteristics.
Published: 29 January 2024
Fig. 4. Burrows and scratches preserved on muddy substrates. A , B ) Detail of paired scratch traces; note the depth of claw penetration in burrow wall (yellow arrow), forming chevron-like structures. C ) Detail of the burrow wall; note the smooth (green arrow) and sharp features (yellow arrow
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Trace fossils from the lower Irkut Formation. (a) Parallel scratches Monomorphichnus isp. (white arrows) in positive hyporelief on the bedding surface of reddish-grey dolomitic sandstones. Numerous (b) low- and (c) high-relief subhorizontal Palaeophycus tubularis in positive hyporelief in grey sandy dolostones. (d) Bedding-parallel sections of subvertical cylindrical Skolithos in yellowish-grey sandy dolostones. (e) Positive hyporelief Treptichnus pedum in grey sandy dolostones. (f) Aligned series of short low-relief projections in positive hyporelief (white arrows), which are assigned to Treptichnus isp. in grey sandy dolostones. (g) Series of vertical probes Treptichnus isp. in negative epirelief (white arrows) and parallel symmetrical wave ripple marks on the top of grey sandy dolostones.
Published: 02 December 2020
Fig. 4. Trace fossils from the lower Irkut Formation. (a) Parallel scratches Monomorphichnus isp. (white arrows) in positive hyporelief on the bedding surface of reddish-grey dolomitic sandstones. Numerous (b) low- and (c) high-relief subhorizontal Palaeophycus tubularis in positive
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Linear and curvilinear surficial features. (a) Linear scratches (Sc) caused by debris (Cl) falling on the outcrop. (b) Subglacial features. Curved chatter mark fractures (CM) and striations (ST) on glacially polished surfaces. These features locally superficially resemble, and must be distinguished from, veins and joints.
Published: 01 July 2019
Fig. 2. Linear and curvilinear surficial features. ( a ) Linear scratches (Sc) caused by debris (Cl) falling on the outcrop. ( b ) Subglacial features. Curved chatter mark fractures (CM) and striations (ST) on glacially polished surfaces. These features locally superficially resemble, and must
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Scratches on the surface of the detachment layer in the Katian, 87.8 m (288.1 ft).
Published: 01 November 2018
Figure 13. Scratches on the surface of the detachment layer in the Katian, 87.8 m (288.1 ft).
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Intensely weathered boulders with joints and scratches.
Published: 30 November 2017
Fig. 9. Intensely weathered boulders with joints and scratches.
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Figure 3
Published: 09 November 2015
Figure 3 Means and standard errors of the mean for total numbers of scratches (TS) and pits (TP).
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Boxplot of values for fine scratches, with the black line in the box depicting the median value and the box representing 50% of the sample. The whiskers show the highest and lowest scores for specimens which are not outliers.
Published: 01 September 2014
Fig. 6.— Boxplot of values for fine scratches, with the black line in the box depicting the median value and the box representing 50% of the sample. The whiskers show the highest and lowest scores for specimens which are not outliers.
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Kimberichnus teruzzii. 1, paired scratches made on bed top (epirelief) with pellets of sand adhering to the surface representing presumed organic rich sediment raked up by an inferred trace maker; fine-medium grained sandstone bed, 0.5–1.2 cm thick, from the Ediacara Member, Mt. Scott Range, SAM P35662; note a single groove trace, Helminthoidichnites, cutting the same surface (arrow) after scratch traces; 2, epirelief sample; 3, sketch of K. teruzzii with sand pellets and hollows from the same bed, SAM P35663. Scale bars=1 cm.
Published: 01 March 2014
Figure 4 Kimberichnus teruzzii. 1, paired scratches made on bed top (epirelief) with pellets of sand adhering to the surface representing presumed organic rich sediment raked up by an inferred trace maker; fine-medium grained sandstone bed, 0.5–1.2 cm thick, from the Ediacara Member, Mt
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Types of scratches on (a) soft sandstone and (b) hard sandstone during Cerchar test.
Published: 01 February 2013
Fig. 8. Types of scratches on ( a ) soft sandstone and ( b ) hard sandstone during Cerchar test.
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Published: 01 November 2011
TABLE 3— Tukey's post-hoc test results for small pits (above) and coarse scratches (below) by taxon.
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Published: 01 November 2011
TABLE 4— Tukey's post-hoc test results for hypercoarse scratches (above) and fine scratches (below) by taxon.
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Figure 2. Erpetopus trackway showing claw scratches, in-situ plaster cast, Lower Permian of the Orobic Alps (northern Italy).
Published: 01 September 2011
F igure 2. Erpetopus trackway showing claw scratches, in-situ plaster cast, Lower Permian of the Orobic Alps (northern Italy).
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Photomicrographs. A: Graphite clusters. B: Polishing scratches from diamonds protruding from garnet. A–C, E: Identified diamonds in garnet. D: Identified diamond in kyanite. A, C, and D are from felsic granulite, T-7 borehole. B and E are from intermediate granulites from Eger Crystalline Complex and from T-38 borehole. A–C were taken in reflected light; D and E were taken in transmitted light.
Published: 01 July 2011
Figure 2. Photomicrographs. A: Graphite clusters. B: Polishing scratches from diamonds protruding from garnet. A–C, E: Identified diamonds in garnet. D: Identified diamond in kyanite. A, C, and D are from felsic granulite, T-7 borehole. B and E are from intermediate granulites from Eger
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SEM images of additional scratches and chattermark trails on the etched surface of another quartz bead. The scratches are straight, and the grooves of the chattermark trails are straight or curved.
Published: 01 February 2011
Figure 4 SEM images of additional scratches and chattermark trails on the etched surface of another quartz bead. The scratches are straight, and the grooves of the chattermark trails are straight or curved.
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Figure 5. Histogram showing average counts of hypercoarse scratches and puncture pits per taxon with two standard deviations; star  =  P. ursinus; X  =  P. izodi; cross  =  Pp. antiquus; circle  =  Pp. jonesi; triangle  =  Pp. broomi; rectangle  =  indeterminate (indet.); X  =  P. izodi; star  =  P. ursinus; cross  =  Pp. antiquus; triangle  =  Pp. broomi; circle  =  Pp. jonesi.
Published: 01 July 2010
Figure 5. Histogram showing average counts of hypercoarse scratches and puncture pits per taxon with two standard deviations; star  =  P. ursinus ; X  =  P. izodi ; cross  =  Pp. antiquus ; circle  =  Pp. jonesi ; triangle  =  Pp. broomi ; rectangle  =  indeterminate (indet.); X  =  P. izodi