Using morphometric and analytical techniques to characterize elephant ivory

Singh, Rina; Goyal, Surendra Prakash; Khanna, P. P.; Mukherjee, Pulok K.; Sukumar, Raman

doi:10.1016/j.forsciint.2006.06.028

Cited by 45 publications

(34 citation statements)

References 10 publications

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“…Details of the measurements are provided in figure 2. Singh et al (2006) observed the Schreger angle in the range of 30° to 153° in the Asian Elephant and 32° to 145° in African Elephant, which is slightly greater as compared to result of the present study.…”

Section: Resultscontrasting

confidence: 77%

“…65% of the measurements was greater than 90° (Figure 3.). There are several different findings among the results of Trapani and Fisher (2003), Singh et al (2006), and the present study which might be because of the angle's measurements taken along different positions in the tusk. A wide range of Schreger angle observed in this study might be because of the fact that they were measured on samples taken from various unknown positions along the proximo-distal ivory axis.…”

Section: Fig 2 Schreger Angles (N=120) Distribution In the Ivory Sacontrasting

confidence: 70%

“…The intersections of Schreger lines form angles (Espinoza & Mann, 1991) which are produced when dentinal tubules, produced by odontoblasts move towards the tusk axis during dentine deposition (Miles, 1967). The Schreger angles appear in concave as well as convex forms; the concave angles have slightly concave sides and open medially (inner) and the convex angles have somewhat convex sides open towards the periphery (outer) of the tusk (Espinoza & Mann, 1991;Singh et al, 2006). Fast, easy and accurate analysis of Schreger pattern for the characterization of the ivory is of great importance for the forensic purposes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Identification and Differentiation of the Asian Elephant Ivory by Using Schreger Lines

Jha

Kshetry

Pokharel

et al. 2017

J. Inst. Sci. Tech.

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Elephant ivory is one of the highly priced, illegally traded wildlife trophies and its identification has always been a challenging task. A total of 21 Asian elephant tusks stored at the office of the Chitwan National Park, Kasara, Nepal were morphometrically studied with an aim to typify elephant ivory by using Schreger lines. The ivory samples were cleaned, their Schreger lines were photographed and their angles were measured by using a protractor. A total of 120 Schreger angles data from both outer and inner areas were obtained resulting both concave and convex appearance. The observed maximum and minimum Schreger angles values were 125° and 50° respectively. The mean Schreger angle was found to be 95.60° (±14.23). The Schreger lines were present in all studied samples. Thus, it is concluded that the presence of Schreger line is the identifying feature of an elephant tusk.

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Section: Resultscontrasting

confidence: 77%

Section: Fig 2 Schreger Angles (N=120) Distribution In the Ivory Sacontrasting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Identification and Differentiation of the Asian Elephant Ivory by Using Schreger Lines

Jha

Kshetry

Pokharel

et al. 2017

J. Inst. Sci. Tech.

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“…The Schreger pattern, firstly described as intersecting lines radiating in spiral fashion forming the Schreger angles (Miles et al 1960), has been studied to distinguish between mammoth and elephant ivory and even between Asiatic and African elephant (Espinoza and Mann 1991;Singh et al 2006;Trapani and Fisher 2003). The microstructural origin of the Schreger pattern is still not totally understood.…”

Section: Ivoriesmentioning

confidence: 99%

Informative Potential of Multiscale Observations in Archaeological Biominerals Down to Nanoscale

Reiche

Gourrier

2016

Nanoscience and Cultural Heritage

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“…16 Meanwhile, scientific investigation into the underlying structure of the material remains ongoing. 17 Publications on the visual and experimental differentiation of ivory's geographic and zoological sources has emerged from a presentist and legalistic anti-poaching framework, though its results are applicable elsewhere. 18 New techniques remain, however, under-exploited.…”

mentioning

confidence: 99%

A Tale of Two Ivories: Elephant and Walrus

Gillman

2017

ETFVII

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I propose that elephant and walrus ivory were imperfect substitutes in the medieval economy, appreciated and used as distinct substances. This argument draws upon two ongoing debates, though seemingly unrelated -one about the colonization of Greenland, one about a material known in Arabic as khutū. By reading different bodies of research against each other, I propose new avenues for research in the study of medieval art and trade networks. This uses a combination of historical, philological, artifactual, and material-based approaches. Rather than offering solutions, this essay seeks to open paths for research by specialists in various disciplines.

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Using morphometric and analytical techniques to characterize elephant ivory

Cited by 45 publications

References 10 publications

Identification and Differentiation of the Asian Elephant Ivory by Using Schreger Lines

Identification and Differentiation of the Asian Elephant Ivory by Using Schreger Lines

Informative Potential of Multiscale Observations in Archaeological Biominerals Down to Nanoscale

A Tale of Two Ivories: Elephant and Walrus

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