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Image stack, PLY-files and a NEX-file accompanying: A new symmoriiform from the Late Devonian of Morocco: novel jaw function in ancient sharks

Citation

Frey, Linda et al. (2020), Image stack, PLY-files and a NEX-file accompanying: A new symmoriiform from the Late Devonian of Morocco: novel jaw function in ancient sharks, Dryad, Dataset, https://doi.org/10.5061/dryad.qrfj6q5d2

Abstract

We describe the small chondrichthyan Ferromirum oukherbouchi n.gen. et sp. from the Famennian (Late Devonian) of the Maïder region in Morocco. This chondrichthyan is exceptionally well preserved and displays not only mineralized soft tissues but also undeformed cartilages of the head, gills, and shoulder girdle. A reconstruction of the head using 3D-prints revealed a previously unknown kind of jaw articulation. Here, we make the original cropped image stack and PLY-files of the single cartilaginous elements accessible. Additionally, a nexus-file with the character matrix used for the cladogram shown in the article is included.

Methods

Most of this text is copied from the article: The holotype of Ferromirum oukherbouchi n.gen. et sp. was scanned using an industrial computed tomography scanner (Nikon XT H 225 ST) at the University of Zurich, Switzerland. Data acquisition and image reconstruction parameters are: 224 kV, 474µA; filter: 4 mm of copper; isotropic voxel dimensions of 0.091 mm; 16-bit TIFF images were acquired; XX 8-bit TIFF images were used for reconstruction. Images were analysed and 3D models reconstructed using Mimics v.17 (http://www.biomedical.materialise.com/mimics; Materialise, Leuven, Belgium). The 3D-object was edited (smoothing, colours and lightning) in MeshLab v. 2016 (http://www.meshlab.net; 41) and blender v2.79b (https://www.blender.org; Amsterdam, Netherlands). PLY-files of the main cartilages were produced using Mimics v.17.

Funding

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Award: 200020_184894

NOW Vidi, Award: 864.14.009

NOW Vidi, Award: 864.14.009