Work Description

Title: CT Data of Dolichochampsa minima, UMMP Open Access Deposited

O
Attribute Value
Methodology
  • The specimen was scanned with a Nikon XT H 225ST uCT system housed in the Department of Earth and Environmental Sciences at the University of Michigan. Scans were collected with the following settings: energy settings, 180 kV, 145 uA; source to object distance, 321.4 mm; source to detector distance, 1104.0 mm; scanned with 2000 projections; voxel size, x = 0.05822466 mm y = 0.05822466 mm z = 0.05822466 mm; slice dimension (in pixels), x = 1821, y = 1824; number of slices, 2000 16-bit TIFF images. Original floating point grey values were scaled to span the unsigned 16-bit integer range using an offset of 4936.0830078125 and a scale factor of 7.7010213735181, where 16output = SCALE * (32input + OFFSET).
Description
  • This collection includes computed tomography (CT) scans of cranial and post-cranial remains of Dolichochampsa minima (Crocodylia) from the Cretaceous of Bolivia. The specimen was collected by the auspice of Princeton University. The specimen is currently housed at the University of Michigan Museum of Paleontology.
Creator
Depositor
Contact information
Discipline
Funding agency
  • Other Funding Agency
Other Funding agency
  • Princeton University
Keyword
Date coverage
  • 2020-08-01
Citations to related material
  • Kevin I. Vélez-Rosado, Olga I. Zalles-Grebetskaya, Jeffrey A. Wilson Mantilla, Blaire Schoene, Adam Maloof, and Bolton, Howes. 2025. New material of Dolichochampsa minima (Archosauria: Crocodylia) from the Cretaceous–Paleogene El Molino Formation of Bolivia sheds light on the early evolution of Gavialinae. Unpublished manuscript.
Related items in Deep Blue Documents
  • The manuscript is under revision.
Resource type
Last modified
  • 03/05/2025
Published
  • 03/05/2025
Language
DOI
  • https://doi.org/10.7302/65y9-bf75
License
  • Usage of the associated data is restricted. The terms of use as of date of metadata creation (2019-02-25 ) are included in the file _LICENSE.txt. Please see https://umorf.ummp.lsa.umich.edu/wp/ct-terms/ for current terms, as these may have changed.
To Cite this Work:
Velez Rosado, K. I. (2025). CT Data of Dolichochampsa minima, UMMP [Data set], University of Michigan - Deep Blue Data. https://doi.org/10.7302/65y9-bf75

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Files (Count: 3; Size: 2.96 GB)

Thumbnailthumbnail-column Title Original Upload Last Modified File Size Access Actions
_LICENSE.txt 2025-02-20 2025-02-20 6.18 KB Open Access
_Readme.txt 2025-03-05 2025-03-05 2.4 KB Open Access
Bolivian_Specimen.zip 2025-03-05 2025-03-05 2.96 GB Open Access

TITLE
Bolivian crocodylian (FCGV-8178) micro Computed Tomography (CT) data

CREATED
September 15, 2020 by
Jeffrey A Wilson Mantilla
Curator, Museum of Paleontology
Professor, Department of Earth & Environmental Sciences
University of Michigan
[email protected]

TERMS
Terms of use for CT (Computed Tomography) Data from the University of Michigan Museum of Paleontology (UMMP).

These terms may have been updated since the files were deposited (see Sec 5.2). For the most up-to-date version of these terms, please see:
https://umorf.ummp.lsa.umich.edu/wp/ct-terms/

By downloading, receiving, or otherwise accessing or using CT Data provided by the UMMP and CTEES, you agree to be bound by these Terms of Use.

METHODS
Computed tomographic (CT) of Dolichochampsa minima (FCGV-8178) scans were performed at the University of Michigan Computed Tomography in Earth and Environmental Science facility (“CTEES”) in Ann Arbor, MI, USA., using a Nikon XT H 225ST uCT system with a 2.5-mm-thick copper filter. The scanner is equipped with a tungsten target and was autoconditioned to maximum capacity at 225 kV. Scans settings were as follows: voltage = 175 kV, current = 220 uA; exposure time = 2.83 s; magnification = 2.841; uniform cubic voxels were 71 μm on a side; projections = optimized; frames captured/projection = 2.

DESCRIPTION
Reconstructed CT slices for FCGV-8178 of Dolichochampsa minima (University of Michigan Museum of Paleontology, UMMP) as a series of TIFF images. Raw projections are not included in this dataset. The reconstructed slice data from the scan are offered here as a series of unsigned 16-bit integer TIFF images. The upper left corner of the first image (*_0001.tif) is the XYZ origin."

"License": "Usage of the associated data is restricted. The terms of use as of date of metadata creation ([date] are included in the file _LICENSE.txt. Please see https://umorf.ummp.lsa.umich.edu/wp/ct-terms/ for current terms, as these may have changed."

FILE LIST
The data set includes a stack of 1763 tiff images, a .mcs file, a .vgi file, and a .vol file derived from the CT imaging.

REFERENCE
Kevin I. Vélez-Rosado, Olga I. Zalles-Grebetskaya, Jeffrey A. Wilson Mantilla, Blaire Schoene, Adam Maloof, and Bolton, Howes. 2025. New material of Dolichochampsa minima (Archosauria: Crocodylia) from the Cretaceous–Paleogene El Molino Formation of Bolivia sheds light on the early evolution of Gavialinae. Unpublished manuscript.

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