Introducing 'trident': a graphical interface for discriminating groups using dental microwear texture analysis

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  • 29 September 2023
    • preprint
    • Published by HAL in HAL
Abstract
This manuscript introduces trident, an R package for performing dental microwear texture analysis and subsequently classifying variables based on their ability to separate discrete categories. The trident package comes with independent functions and a user interface, trident, enabling easy and fast proficiency. It can import .SUR files, then remove aberrant peaks and possibly polynomial surfaces in the 2 nd or 8 th order. Next, it can measure up to 384 variables corresponding to 24 parameters and their heterogeneity. It can also rank any number of variables using five different methods, display the results in multivariate analyses, and export the results in R, providing access to its large asset of libraries. We then present these features in three case studies, showing how trident helps answer questions commonly investigated by paleontologists and archaeologists. In the first case study, we separate four groups of domestic pigs based on their dietary composition. In the second case study, we identify microwear texture patterns in a large database of 15 primate species and relate these patterns to biomechanical and ecological factors. The third case study investigates the dental microwear textures of four extant ruminants to infer the diet of an extinct antelope from the Pleistocene of Greece. These case studies show how trident can leverage dental microwear texture analysis results.

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