快速开始:根据骨组织学分析,阿根廷上三叠世大陆地层中的早期鳄形目Trialestes romeri快速生长的证据。

IF 1.8 3区 医学 Q2 ANATOMY & MORPHOLOGY
Denis A Ponce, Ignacio A Cerda, Julia B Desojo
{"title":"快速开始:根据骨组织学分析,阿根廷上三叠世大陆地层中的早期鳄形目Trialestes romeri快速生长的证据。","authors":"Denis A Ponce, Ignacio A Cerda, Julia B Desojo","doi":"10.1111/joa.14230","DOIUrl":null,"url":null,"abstract":"<p><p>The palaeobiology aspects of early Crocodylomorpha during their origin in the Triassic are poorly known, despite occupying an important palaeoecological role in continental environments. In this study, we report the microstructural features of appendicular bones of two specimens of Trialestes romeri, a non-Crocodyliformes Crocodylomorpha from the Upper Triassic from the NW of Argentina. Our goals are to infer aspects of life history (i.e. age estimation and maturity events), inter-elemental variation and the growth dynamics within a phylogenetic framework. The samples include the humerus and the ulna of the holotype (PVL 2561) and the humerus and the femur of a referred specimen (PVL 3889). All elements are mostly composed by the fibrolamellar complex with a variable distribution of parallel-fibred bone in their cortex. Furthermore, they possess a uniform and homogeneous vascularisation, formed mainly by a laminar pattern. The humerus of the PVL 2561 records two lines of arrested growth (LAGs) and no cyclical growth marks were registered in the ulna. Meanwhile, the humerus and the femur of PVL 3889 exhibit a single LAG. Hence, a slight disparate inter-elemental variation is reported in both individuals. The absence of an external fundamental system (EFS) and a homogenous distribution of the bone matrix and vascularisation suggest that both specimens did not attain sexual and somatic maturity. Overall, the histological features of T. romeri indicate a rapid growth rate just like other early crocodylomorphs (Terrestrisuchus, Saltoposuchus), whereas others possess a rather moderate (Crocodylomorpha indet. BP/1/8484 specimen) or slower (Hesperosuchus) growth rate. These findings reveal that rapid growth rates were widely present among early crocodylomorphs and their early occurrence in the evolutionary history of Crocodylomorpha might suggest that it is the plesiomorphic condition.</p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":" ","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A fast start: Evidence of rapid growth in Trialestes romeri, an early Crocodylomorpha from the Upper Triassic continental beds of Argentina based on osteohistological analyses.\",\"authors\":\"Denis A Ponce, Ignacio A Cerda, Julia B Desojo\",\"doi\":\"10.1111/joa.14230\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The palaeobiology aspects of early Crocodylomorpha during their origin in the Triassic are poorly known, despite occupying an important palaeoecological role in continental environments. In this study, we report the microstructural features of appendicular bones of two specimens of Trialestes romeri, a non-Crocodyliformes Crocodylomorpha from the Upper Triassic from the NW of Argentina. Our goals are to infer aspects of life history (i.e. age estimation and maturity events), inter-elemental variation and the growth dynamics within a phylogenetic framework. The samples include the humerus and the ulna of the holotype (PVL 2561) and the humerus and the femur of a referred specimen (PVL 3889). All elements are mostly composed by the fibrolamellar complex with a variable distribution of parallel-fibred bone in their cortex. Furthermore, they possess a uniform and homogeneous vascularisation, formed mainly by a laminar pattern. The humerus of the PVL 2561 records two lines of arrested growth (LAGs) and no cyclical growth marks were registered in the ulna. Meanwhile, the humerus and the femur of PVL 3889 exhibit a single LAG. Hence, a slight disparate inter-elemental variation is reported in both individuals. The absence of an external fundamental system (EFS) and a homogenous distribution of the bone matrix and vascularisation suggest that both specimens did not attain sexual and somatic maturity. Overall, the histological features of T. romeri indicate a rapid growth rate just like other early crocodylomorphs (Terrestrisuchus, Saltoposuchus), whereas others possess a rather moderate (Crocodylomorpha indet. BP/1/8484 specimen) or slower (Hesperosuchus) growth rate. These findings reveal that rapid growth rates were widely present among early crocodylomorphs and their early occurrence in the evolutionary history of Crocodylomorpha might suggest that it is the plesiomorphic condition.</p>\",\"PeriodicalId\":14971,\"journal\":{\"name\":\"Journal of Anatomy\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2025-01-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Anatomy\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1111/joa.14230\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ANATOMY & MORPHOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Anatomy","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1111/joa.14230","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ANATOMY & MORPHOLOGY","Score":null,"Total":0}
引用次数: 0

摘要

尽管在大陆环境中扮演着重要的古生态角色,但在三叠纪起源时期早期鳄形动物的古生物学方面所知甚少。本文报道了阿根廷西北部上三叠统非鳄形目Trialestes romeri的两具附属骨的显微结构特征。我们的目标是在系统发育框架内推断生命史的各个方面(即年龄估计和成熟事件),元素间变化和生长动态。样本包括全型标本(PVL 2561)的肱骨和尺骨,以及参考标本(PVL 3889)的肱骨和股骨。所有元素主要由纤维板层复合体组成,其皮质中平行纤维骨的变化分布。此外,它们具有均匀的血管化,主要由层流模式形成。PVL 2561肱骨有两条生长阻滞线(lag),尺骨无周期性生长标记。pvl3889的肱骨和股骨表现为单一的LAG。因此,在两个个体中都有轻微的元素间差异。外部基本系统(EFS)的缺失以及骨基质和血管化的均匀分布表明,这两个标本都没有达到性成熟和体细胞成熟。总体而言,romeri T. romeri的组织学特征与其他早期鳄形目(Terrestrisuchus, Saltoposuchus)一样具有快速的生长速度,而其他鳄形目(Crocodylomorpha index)具有相当温和的生长速度。BP/1/8484标本)或较慢的(Hesperosuchus)生长速率。这些发现表明,早期鳄形动物普遍存在快速生长的现象,它们在鳄形动物进化史上的早期出现可能表明这是一种多形状态。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A fast start: Evidence of rapid growth in Trialestes romeri, an early Crocodylomorpha from the Upper Triassic continental beds of Argentina based on osteohistological analyses.

The palaeobiology aspects of early Crocodylomorpha during their origin in the Triassic are poorly known, despite occupying an important palaeoecological role in continental environments. In this study, we report the microstructural features of appendicular bones of two specimens of Trialestes romeri, a non-Crocodyliformes Crocodylomorpha from the Upper Triassic from the NW of Argentina. Our goals are to infer aspects of life history (i.e. age estimation and maturity events), inter-elemental variation and the growth dynamics within a phylogenetic framework. The samples include the humerus and the ulna of the holotype (PVL 2561) and the humerus and the femur of a referred specimen (PVL 3889). All elements are mostly composed by the fibrolamellar complex with a variable distribution of parallel-fibred bone in their cortex. Furthermore, they possess a uniform and homogeneous vascularisation, formed mainly by a laminar pattern. The humerus of the PVL 2561 records two lines of arrested growth (LAGs) and no cyclical growth marks were registered in the ulna. Meanwhile, the humerus and the femur of PVL 3889 exhibit a single LAG. Hence, a slight disparate inter-elemental variation is reported in both individuals. The absence of an external fundamental system (EFS) and a homogenous distribution of the bone matrix and vascularisation suggest that both specimens did not attain sexual and somatic maturity. Overall, the histological features of T. romeri indicate a rapid growth rate just like other early crocodylomorphs (Terrestrisuchus, Saltoposuchus), whereas others possess a rather moderate (Crocodylomorpha indet. BP/1/8484 specimen) or slower (Hesperosuchus) growth rate. These findings reveal that rapid growth rates were widely present among early crocodylomorphs and their early occurrence in the evolutionary history of Crocodylomorpha might suggest that it is the plesiomorphic condition.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of Anatomy
Journal of Anatomy 医学-解剖学与形态学
CiteScore
4.80
自引率
8.30%
发文量
183
审稿时长
4-8 weeks
期刊介绍: Journal of Anatomy is an international peer-reviewed journal sponsored by the Anatomical Society. The journal publishes original papers, invited review articles and book reviews. Its main focus is to understand anatomy through an analysis of structure, function, development and evolution. Priority will be given to studies of that clearly articulate their relevance to the anatomical community. Focal areas include: experimental studies, contributions based on molecular and cell biology and on the application of modern imaging techniques and papers with novel methods or synthetic perspective on an anatomical system. Studies that are essentially descriptive anatomy are appropriate only if they communicate clearly a broader functional or evolutionary significance. You must clearly state the broader implications of your work in the abstract. We particularly welcome submissions in the following areas: Cell biology and tissue architecture Comparative functional morphology Developmental biology Evolutionary developmental biology Evolutionary morphology Functional human anatomy Integrative vertebrate paleontology Methodological innovations in anatomical research Musculoskeletal system Neuroanatomy and neurodegeneration Significant advances in anatomical education.
×
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:604180095
Book学术官方微信