CT data and 3D models of phocoenid periotic and bony labyrinth (CCNHM 1913)

High-resolution computed tomography (CT) scan data and 3D digital model of the periotic bone from phocoenid (porpoise) fossil specimen CCNHM 1913, and 3D digital model of bony labyrinth extracted from the interior of the periotic. The dataset includes raw CT scan images (TIFF stack) with scanning parameters and voxel size information, plus processed 3D models of the complete periotic and isolated bony labyrinth in STL format. The periotic bone houses the inner ear structures critical for understanding hearing capabilities, phylogenetic relationships, and evolutionary adaptations in cetacean fossils. These digital models enable detailed morphometric analyses and comparative studies without handling the original specimen, supporting research in marine mammal evolution, echolocation, and inner ear morphology.
, , # CT data and 3D models of phocoenid periotic and bony labyrinth (CCNHM 1913)

Dataset DOI: [10.5061/dryad.fttdz0967](https://doi.org/10.5061/dryad.fttdz0967)

## Description of the data and file structure

This dataset contains CT scan data and 3D models of the periotic bone from the porpoise fossil CCNHM 1913. The periotic bone houses the inner ear structures in cetaceans and is critical for understanding hearing capabilities, phylogenetic relationships, and evolutionary adaptations. The TIFF image stack contains the CT data obtained using the North Star Imaging (NSI) CT scanner located at Vanderbilt University Earth and Environmental Sciences. The TIFF stack was derived from the original NSI format using the proprietary NSI software. Using VGStudioMax, a 3D model was segmented and extracted of the complete periotic bone, and further refined in Meshlab to isolate the periotic bone by removing extraneous mesh components. Avizo was used to generate (segment) the 3D model of the bony lab...,