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3D data related to the publication: A new species of Palaeopython (Serpentes) and other extinct squamates from the Eocene of Dielsdorf (Zurich, Switzerland)


Georgalis, Georgios L; Scheyer, Torsten M (2019). 3D data related to the publication: A new species of Palaeopython (Serpentes) and other extinct squamates from the Eocene of Dielsdorf (Zurich, Switzerland). MorphoMuseuM, 5(2):e93.

Abstract

INTRODUCTION
CT scanning was conducted in three different-sized snake vertebrae of Palaeopython helveticus sp. nov., including its holotype PIMUZ A/III 634, from Eocene fissure fills at Dielsdorf, near Zurich, Switzerland (e.g., Rosselet, 1991) in order to detect and evaluate ontogenetic variability in these fossils. In addition, a dentary of Palaeovaranus sp. was scanned to elucidate its internal histology and tooth implementation (Fig. 1 and Table
METHODS
The bones (snake vertebrae; dentary) from Dielsdorf were scanned with a Nikon XTH 225 ST CT Scanner housed at the Anthropological Department of the University of Zurich. The microcomputed tomography scan of the vertebrae was taken with a voltage of 91 kV and a current of 345 μA, yielding a voxel size of 0.03758 mm, with no filter used. The dentary was scanned with a voltage of 162 kV, a current of 102 μA, yielding a voxel size of 0.01654 mm, again with no filter used. Reconstruction of the digital stack for virtual 3D reconstruction was achieved using VG Studio Max 2.2. The 3D surface models are provided in .ply format and the datasets in DICOM format, and can therefore be opened with a wide range of freeware.

Abstract

INTRODUCTION
CT scanning was conducted in three different-sized snake vertebrae of Palaeopython helveticus sp. nov., including its holotype PIMUZ A/III 634, from Eocene fissure fills at Dielsdorf, near Zurich, Switzerland (e.g., Rosselet, 1991) in order to detect and evaluate ontogenetic variability in these fossils. In addition, a dentary of Palaeovaranus sp. was scanned to elucidate its internal histology and tooth implementation (Fig. 1 and Table
METHODS
The bones (snake vertebrae; dentary) from Dielsdorf were scanned with a Nikon XTH 225 ST CT Scanner housed at the Anthropological Department of the University of Zurich. The microcomputed tomography scan of the vertebrae was taken with a voltage of 91 kV and a current of 345 μA, yielding a voxel size of 0.03758 mm, with no filter used. The dentary was scanned with a voltage of 162 kV, a current of 102 μA, yielding a voxel size of 0.01654 mm, again with no filter used. Reconstruction of the digital stack for virtual 3D reconstruction was achieved using VG Studio Max 2.2. The 3D surface models are provided in .ply format and the datasets in DICOM format, and can therefore be opened with a wide range of freeware.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Paleontological Institute and Museum
Dewey Decimal Classification:560 Fossils & prehistoric life
Language:English
Date:5 June 2019
Deposited On:04 Nov 2020 16:30
Last Modified:04 Nov 2020 16:53
Publisher:Association Palaeovertebrata
ISSN:2274-0422
OA Status:Green
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.18563/journal.m3.93
Official URL:https://morphomuseum.com/articles/view/93

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