Rigby, Samantha;
Poropat, Stephen;
Mannion, Philip;
Pentland, Adele;
Sloan, Trish;
Rumbold, Steven;
Webster, Carlin;
(2022)
A juvenile Diamantinasaurus matildae (Dinosauria: Titanosauria) from the Upper Cretaceous Winton Formation of Queensland, Australia, with implications for sauropod ontogeny.
Journal of Vertebrate Paleontology
, 41
(6)
, Article e2047991. 10.1080/02724634.2021.2047991.
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Mannion_A juvenile Diamantinasaurus matildae Dinosauria Titanosauria from the Upper Cretaceous Winton Formation of Queensland Australia wi.pdf Download (5MB) | Preview |
Abstract
Although sauropod dinosaur bones are the most abundant vertebrate fossils found in the Upper CretaceousWinton Formation of northeast Australia, only subadult and adult specimens have been described to date. Herein, wedescribe thefirst juvenile sauropod from Australia, derived from the Winton Formation (Cenomanian–lower Turonian).The preserved material belongs to a single individual and is sufficiently diagnostic to classify as a juvenileDiamantinasaurus matildae—the third specimen to be referred to the species. It also enables the identification of a newlocal autapomorphy forDiamantinasaurus: a distinct tuberosity on the medial surface of the scapula, posterior to thejunction of the acromion and the distal blade. Nevertheless, several morphological changes are observable between thejuvenile and the two adult skeletons ofDiamantinasaurus matildae. These include less well-defined or entirely absentmuscle attachment sites on the juvenile bones relative to the heavily scarred and rugose adult specimens. Overlappingelements between the juvenile and the two adult skeletons indicate allometric changes forDiamantinasaurus matildaethroughout ontogeny, with limb bones growing at a more rapid proportional rate than other skeletal elements. Finally, wereview the global record of juvenile sauropod remains, demonstrating that the growth patterns of sauropods vary greatlybetween taxa. Although titanosaurs display a range of isometry and allometry in the growth of individual bones, itappears that allometric growth was the primary pattern for this group.
| Type: | Article |
|---|---|
| Title: | A juvenile Diamantinasaurus matildae (Dinosauria: Titanosauria) from the Upper Cretaceous Winton Formation of Queensland, Australia, with implications for sauropod ontogeny |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1080/02724634.2021.2047991 |
| Publisher version: | https://doi.org/10.1080/02724634.2021.2047991 |
| Language: | English |
| Additional information: | © 2022. Samantha L. Rigby, Stephen F. Poropat, Philip D. Mannion,Adele H. Pentland, Trish Sloan, Steven J. Rumbold, Carlin B. Webster,and David A. Elliott.This is an Open Access article distributed under the terms of the Crea-tive Commons Attribution-NonCommercial-NoDerivatives License(http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, pro-vided the original work is properly cited, and is not altered, transformed,or built upon in any way.Color versions of one or more of thefigures in the article can be foundonline atwww.tandfonline.com/ujvp.Journal of Vertebrate Paleontology e2047991 (20 pages)Published with license by the Society of Vertebrate PaleontologyDOI: 10.1080/02724634.2021.2047991 |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10142798 |
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