New specimens of the early Permian apex predator Varanops brevirostris at Richards Spur, Oklahoma, with histological information about its growth pattern

Simple item page
dc.contributor.authorMaho, Ten_AU
dc.contributor.authorBevitt, JJen_AU
dc.contributor.authorReisz, RRen_AU
dc.date.accessioned2024-12-05T20:35:50Zen_AU
dc.date.available2024-12-05T20:35:50Zen_AU
dc.date.issued2023-02-15en_AU
dc.date.statistics2024-11-07en_AU
dc.description.abstractAn articulated pelvic region and additional isolated material of Varanops brevirostris, which are indistinguishable from those of the generotype from the Cacops bonebed, demonstrate the presence of this large varanopid at the Richards Spur locality. The articulated specimen includes lumbar, sacral, and anterior caudal vertebrae, partial pelvis, femur, and proximal part of tibia, confirming the autapomorphies previously suggested for this species. These include the presence of distinct blade-like shapes of the neural spines in the sacral region, the presence of deeply excavated pubis, and the presence of a distinct transverse ridge on the ventral surface of the femur distal to the intertrochanteric fossa. It has also been found that the transverse ridges and grooves become larger during ontogeny since the juvenile specimen did not exhibit a well-developed ridge. Histological analysis of isolated limb bones and neutron computed tomography (nCT) of the articulated specimen indicate that the latter likely belonged to an adult individual. This is in contrast to the other varanopid at Richards Spur, the significantly smaller, more gracile predator Mesenosaurus efremovi, which also shows the presence of growth lines and the external fundamental system with an estimated minimum age of fourteen. © PeerJ, Inc. 2012-2024 Public user content licensed CC BY 4.0 unless otherwise specified.en_AU
dc.description.sponsorshipThis work was supported by a Natural Sciences and Engineering Research Council (NSERC) scholarship to Tea Maho, an NSERC grant to Robert R. Reisz, and the Jilin University, China. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.en_AU
dc.format.mediumElectronic-eCollectionen_AU
dc.identifier.articlenumbere14898en_AU
dc.identifier.citationMaho, T.,Bevitt, J. J., & Reisz, R. R. (2023). New specimens of the early Permian apex predator Varanops brevirostris at Richards Spur, Oklahoma, with histological information about its growth pattern. New specimens of the early Permian apex predator Varanops brevirostris at Richards Spur, Oklahoma, with histological information about its growth pattern. PeerJ, 11, e14898. doi:10.7717/peerj.14898en_AU
dc.identifier.issn2167-8359en_AU
dc.identifier.journaltitlePeerJen_AU
dc.identifier.urihttps://doi.org/10.7717/peerj.14898en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15774en_AU
dc.identifier.volume11en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherPeerJen_AU
dc.subjectPermian Perioden_AU
dc.subjectFossilsen_AU
dc.subjectOklahomaen_AU
dc.subjectGrowthen_AU
dc.subjectAnimalsen_AU
dc.subjectSkeletonen_AU
dc.subjectArchaeological specimensen_AU
dc.subjectOPAL Reactoren_AU
dc.subjectANSTOen_AU
dc.subjectAustralian organizationsen_AU
dc.titleNew specimens of the early Permian apex predator Varanops brevirostris at Richards Spur, Oklahoma, with histological information about its growth patternen_AU
dc.typeJournal Articleen_AU
dcterms.dateAccepted2023-01-24en_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
peerj-14898-1.pdf
Size:
0 B
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.66 KB
Format:
Plain Text
Description:
Download
Collections
Journal Articles