Functional morphology of animals usually relies on observations of living specimens and/or the interpretation of morphological characters found in dead ones. In recent years, the arrival of three-dimensional (3D) imaging techniques significantly extended the pool of available methods for morphological studies. Digital models based on segmented datasets allow the analysis of both external and internal structures, and by providing a ‘‘digital copy’’ they facilitate a non-destructive examination of minute, brittle, and irreplaceable samples. Some animations of 3D data have been published recently as 2D movies.
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