Constraining the body mass range of Anzu wyliei using volumetric and extant-scaling methods
The ability to accurately and reliably estimate body mass of extinct taxa is a vital tool for interpreting the physiology and even behavior of long-dead animals. For this reason, paleontologists have developed many possible methods of estimating the body mass of extinct animals, with varying degree...
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doaj-39cd315db207433f9f862db225fba0af2021-10-06T12:07:03ZengUniversity of Alberta LibrariesVertebrate Anatomy, Morphology, Palaeontology2292-13892021-09-019110.18435/vamp29375Constraining the body mass range of Anzu wyliei using volumetric and extant-scaling methodsKyle Atkins-Weltman0Eric Snively1Patrick O'Connor2N/AOklahoma State University, College of Osteopathic Medicine-Cherokee NationDepartment of Biomedical Sciences, Ohio State Heritage College of Osteopathic Medicine The ability to accurately and reliably estimate body mass of extinct taxa is a vital tool for interpreting the physiology and even behavior of long-dead animals. For this reason, paleontologists have developed many possible methods of estimating the body mass of extinct animals, with varying degrees of success. These methods can be divided into two main categories: volumetric mass estimation and extant scaling methods. Each has advantages and disadvantages, which is why, when possible, it is best to perform both, and compare the results to determine what is most plausible within reason. Here we employ volumetric mass estimation (VME) to calculate an approximate body mass for previously described specimens of Anzu wyliei from the Carnegie Museum of Natural History. We also use extant scaling methods to try to obtain a reliable mass estimate for this taxon. In addition, we present the first digital life restoration and convex hull of the dinosaur Anzu wyliei used for mass estimation purposes. We found that the volumetric mass estimation using our digital model was 216-280kg, which falls within the range predicted by extant scaling techniques, while the mass estimate using minimum convex hulls was below the predicted range, between 159-199 kg . The VME method for Anzu wyliei strongly affirms the predictive utility of extant-based scaling. However, volumetric mass estimates are likely more precise because the models are based on comprehensive specimen anatomy rather than regressions of a phylogenetically comprehensive but disparate sample. https://journals.library.ualberta.ca/vamp/index.php/VAMP/article/view/29375Mass estimationbody densityrespiratory pneumaticityAnzuCaenagnathidaeOviraptorosauria |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kyle Atkins-Weltman Eric Snively Patrick O'Connor |
spellingShingle |
Kyle Atkins-Weltman Eric Snively Patrick O'Connor Constraining the body mass range of Anzu wyliei using volumetric and extant-scaling methods Vertebrate Anatomy, Morphology, Palaeontology Mass estimation body density respiratory pneumaticity Anzu Caenagnathidae Oviraptorosauria |
author_facet |
Kyle Atkins-Weltman Eric Snively Patrick O'Connor |
author_sort |
Kyle Atkins-Weltman |
title |
Constraining the body mass range of Anzu wyliei using volumetric and extant-scaling methods |
title_short |
Constraining the body mass range of Anzu wyliei using volumetric and extant-scaling methods |
title_full |
Constraining the body mass range of Anzu wyliei using volumetric and extant-scaling methods |
title_fullStr |
Constraining the body mass range of Anzu wyliei using volumetric and extant-scaling methods |
title_full_unstemmed |
Constraining the body mass range of Anzu wyliei using volumetric and extant-scaling methods |
title_sort |
constraining the body mass range of anzu wyliei using volumetric and extant-scaling methods |
publisher |
University of Alberta Libraries |
series |
Vertebrate Anatomy, Morphology, Palaeontology |
issn |
2292-1389 |
publishDate |
2021-09-01 |
description |
The ability to accurately and reliably estimate body mass of extinct taxa is a vital tool for interpreting the physiology and even behavior of long-dead animals. For this reason, paleontologists have developed many possible methods of estimating the body mass of extinct animals, with varying degrees of success. These methods can be divided into two main categories: volumetric mass estimation and extant scaling methods. Each has advantages and disadvantages, which is why, when possible, it is best to perform both, and compare the results to determine what is most plausible within reason. Here we employ volumetric mass estimation (VME) to calculate an approximate body mass for previously described specimens of Anzu wyliei from the Carnegie Museum of Natural History. We also use extant scaling methods to try to obtain a reliable mass estimate for this taxon. In addition, we present the first digital life restoration and convex hull of the dinosaur Anzu wyliei used for mass estimation purposes. We found that the volumetric mass estimation using our digital model was 216-280kg, which falls within the range predicted by extant scaling techniques, while the mass estimate using minimum convex hulls was below the predicted range, between 159-199 kg . The VME method for Anzu wyliei strongly affirms the predictive utility of extant-based scaling. However, volumetric mass estimates are likely more precise because the models are based on comprehensive specimen anatomy rather than regressions of a phylogenetically comprehensive but disparate sample.
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topic |
Mass estimation body density respiratory pneumaticity Anzu Caenagnathidae Oviraptorosauria |
url |
https://journals.library.ualberta.ca/vamp/index.php/VAMP/article/view/29375 |
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