TITLE
Sanajeh indicus GSI/GC/2903 braincase micro Computed Tomography (CT) data

CREATED
April 15, 2024 by
Jeffrey A Wilson Mantilla
Curator, Museum of Paleontology
Professor, Department of Earth & Environmental Sciences
University of Michigan
wilsonja@umich.edu

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.

DESCRIPTION
Specimen GSI/GC/2903 is the 'cranial block' of the holotype of Sanajeh indicus. The scan includes part of GSI/GC/2903, including the  nearly complete braincase (a partial parietal and frontal, prootics, otooccipitals, supraoccipital, supratemporal, basioccipital, and parabasisphenoid). The specimen was collected from Late Cretaceous-aged sediments near the village of Dholi Dungri, Gujarat, India. 

The specimen is housed in Geological Survey of India Palaeontology Division, Central Region, Nagpur, India. For assistance with access, please contact Dhananjay Mohabey (dinomohabey@yahoo.com) or Bandana Samant (bandanabhu@gmail.com). Casts of this and other elements of Sanajeh are available at the University of Michigan Museum of Paleontology. 

Computed tomographic (CT) scans were performed at the University of Michigan Dental School in Ann Arbor, MI, USA, using a Scanco Medical μCT100 with a 0.5-mm-thick aluminum filter. Scan settings were 90 kVp, 155 μA and exposure time 500 ms. Uniform cubic voxels were 40 μm on a side. Please see metadata embedded within dicoms for complete information.

FILE LIST
The data set includes a compressed stack of 2133 dicom files derived from CT imaging. 

REFERENCES
Wilson, J. A., D. M. Mohabey, S. E. Peters, and J. J. Head 2010. Predation on hatchling dinosaurs by a new snake from the Late Cretaceous of India. PLoS Biology 8: 1–5.

Zaher, H., D. M. Mohabey, F. Grazziotin, and J. A. Wilson Mantilla. 2023. A Cretaceous stem snake with an ossified upper temporal bar and the origin of wide-gape feeding. Zoological Journal of the Linnean Society 197:656–697. https://doi.org/10.1093/zoolinnean/zlac001.