Skin ridges (dermatoglyphs or fingerprints) are a characteristic pattern of sulci on the skin of primates which appear on the entire hand palm and on the soles of the feet. Fingerprints are unique, irremovable and invariable which allows bio-identification of specific individuals. The aim of the study was to investigate the usefulness of the analysis of the average width of the skin ridges in archaeological research by analyzing the foot and hand prints found on 7 artifacts dating from the Middle Ages. An attempt was made to describe the preserved skin slate prints, as well as details of the construction of the prints. The fingers used in forming the pottery were recognized. Attempts were made to read the context of individual impressions. In the study, the following features were analyzed: legibility and suitability of the left imprint for the analysis, the possibility of determining the type of figures (whorls, loops, archs), the possibility of determining the minutiae, the density of the skin ridges left on the surface of the ceramics and the width of the skin ridges left on the surface of the ceramics. The classification of fingerprint minutiae proposed by Czesław Grzeszyk (1970) was used as well as classification of epidermal ridges peoposed by Lestrange (1953) and modified by Bochenska (1964) and Rogucka (1968). Analysis of the material allowed to conclude that imprints left on building ceramics can be as useful as those imprinted on utilitarian ceramics, despite differences in the composition of the raw material used in production. However, they require more skill to examine, as the impressions are often incomplete which may be related to the fillers added to the mass. Minutiae were evident on the impressions examined, and single bifurcation was the most common form. The tactile figure most commonly found on the fingertip impressions was the loop. It was not possible to delineate Galton lines due to the wiping of the triple ray. Due to the high illegibility of the prints, it was assumed with a high degree of uncertainty that the fingerprints belonged to adults, but the gender could not be determined. Noteworthy were the prints printed on the brick belonging to children. On the mentioned artifact, there is a footprint of a child aged 1–3 years and a handprint of a crawling infant, which allowed us to conclude that the children were under the care of craftsmen.
The aim of the study was to analyze a skull found in ossuary material in Płock, dated between the 16th and 19th centuries. The skull was subjected to a comprehensive anthropological analysis due to the number of pathological changes occurring to it. These changes testify to both the diseases experienced by the individual and the acquired bone injuries. The study aimed to find out whether the pathological changes on the skull appeared as a result of the injury or intentional trepanation. The examined skull shows three injuries, of which only one may resemble trepanation processes. Comparative analysis of the skull showed that the observed marks were generated ante-mortem. The presence of compact regenerated bone tissue with a significant thickness attests to this statement. Based on the trauma marks, it was determined that two of them (“A” and “B”) had been struck by a sharp-edged instrument. They do not, however, match any known trepanation techniques. They should be categorized as purposeful injuries that are not trepanations, based on the proportions and shape of the incisions, as well as the comparative study. The “C” trace, when examined and compared to the literature, appears to be an oval depression caused by an impact with a blunt-edged object rather than a healed trepanation mark.
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