The axial biomechanics of Trigonosaurus pricei (Neosauropoda: Titanosauria) and the importance of the cervical–dorsal region to sauropod high-browser feeding strategy

IF 3 2区 生物学 Q1 ZOOLOGY
Luciano S Vidal, Lílian P Bergqvist, Carlos R A Candeiro, Kamila L N Bandeira, Sandra Tavares, Stephen L Brusatte, Paulo V L G C Pereira
{"title":"The axial biomechanics of Trigonosaurus pricei (Neosauropoda: Titanosauria) and the importance of the cervical–dorsal region to sauropod high-browser feeding strategy","authors":"Luciano S Vidal, Lílian P Bergqvist, Carlos R A Candeiro, Kamila L N Bandeira, Sandra Tavares, Stephen L Brusatte, Paulo V L G C Pereira","doi":"10.1093/zoolinnean/zlae087","DOIUrl":null,"url":null,"abstract":"Trigonosaurus pricei is a small to medium-sized sauropod dinosaur (Sauropoda: Titanosauria) from the Late Cretaceous Bauru Group of Brazil that is known from a significant amount of recovered axial elements [four cervical vertebrae, 10 dorsal vertebrae, sacrum (MCT 1488-R), and 10 caudal vertebrae (MCT 1719-R)]. In this biomechanical work, we approach the hypothesis of the cartilaginous neutral pose and the range of motion of the axial series of Trigonosaurus. The results show that this sauropod could be capable of high elevation of the neck resulting from morphological adaptations of the cervicodorsal region on dorsal (D) vertebrae D2 and D3 (e.g. postzygapophyses of D2 positioned over the vertebral centrum and prezygapophyses of D3 over the anterior vertebral centrum). This implies that D2 articulates (cartilaginous neutral posture) with D3 only at a strong dorsally directed angle, resulting in a shift in the direction of the neck to a more elevated posture. Furthermore, the tail attributed to Trigonosaurus as a paratype could be oriented in the horizontal ‘direction’ and presented a sigmoidal ‘shape’. This work contributes generally to the understanding of variation in the body plan of sauropods and, more specifically, to the feeding strategy of small and medium-sized titanosaurs from semi-arid regions of Gondwana.","PeriodicalId":49333,"journal":{"name":"Zoological Journal of the Linnean Society","volume":"61 1","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zoological Journal of the Linnean Society","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1093/zoolinnean/zlae087","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ZOOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Trigonosaurus pricei is a small to medium-sized sauropod dinosaur (Sauropoda: Titanosauria) from the Late Cretaceous Bauru Group of Brazil that is known from a significant amount of recovered axial elements [four cervical vertebrae, 10 dorsal vertebrae, sacrum (MCT 1488-R), and 10 caudal vertebrae (MCT 1719-R)]. In this biomechanical work, we approach the hypothesis of the cartilaginous neutral pose and the range of motion of the axial series of Trigonosaurus. The results show that this sauropod could be capable of high elevation of the neck resulting from morphological adaptations of the cervicodorsal region on dorsal (D) vertebrae D2 and D3 (e.g. postzygapophyses of D2 positioned over the vertebral centrum and prezygapophyses of D3 over the anterior vertebral centrum). This implies that D2 articulates (cartilaginous neutral posture) with D3 only at a strong dorsally directed angle, resulting in a shift in the direction of the neck to a more elevated posture. Furthermore, the tail attributed to Trigonosaurus as a paratype could be oriented in the horizontal ‘direction’ and presented a sigmoidal ‘shape’. This work contributes generally to the understanding of variation in the body plan of sauropods and, more specifically, to the feeding strategy of small and medium-sized titanosaurs from semi-arid regions of Gondwana.
pricei 三角龙(新蜥形纲:泰坦龙科)的轴向生物力学以及颈背区对蜥形纲高眉龙进食策略的重要性
雷鬼龙(Trigonosaurus pricei)是巴西晚白垩世包鲁群的一种中小型蜥脚类恐龙(蜥脚类:泰坦龙科),目前已知的有大量复原的轴元素[4块颈椎骨、10块背椎骨、骶骨(MCT 1488-R)和10块尾椎骨(MCT 1719-R)]。在这项生物力学研究中,我们对三角龙的软骨中性姿势和轴向系列的运动范围进行了假设。研究结果表明,由于背侧(D)椎骨 D2 和 D3 上颈背区的形态适应性(例如,D2 的后颧骨位于椎体中心上方,D3 的前颧骨位于椎体中心前方),这种剑龙可能具有颈部高抬的能力。这意味着 D2 与 D3 之间的衔接(软骨中性姿态)只是以一个强烈的背向角度进行的,从而导致颈部的方向转向更高的姿态。此外,作为副样的三角龙的尾部可以朝水平 "方向",并呈现出一个乙字形的 "形状"。这项研究有助于人们全面了解蜥脚类恐龙身体结构的变化,更具体地说,有助于人们了解冈瓦纳半干旱地区中小型巨齿龙的进食策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
6.50
自引率
10.70%
发文量
116
审稿时长
6-12 weeks
期刊介绍: The Zoological Journal of the Linnean Society publishes papers on systematic and evolutionary zoology and comparative, functional and other studies where relevant to these areas. Studies of extinct as well as living animals are included. Reviews are also published; these may be invited by the Editorial Board, but uninvited reviews may also be considered. The Zoological Journal also has a wide circulation amongst zoologists and although narrowly specialized papers are not excluded, potential authors should bear that readership in mind.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信