Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology最新文献_第7页

Morphological characteristics of the unique periodontal structure in dolphins 海豚独特牙周结构的形态特征。

IF 2.1 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-11-12 DOI: 10.1002/ar.25601

Ryo Kodera, Yukiko Kajinishi, Yasuhiro Uekusa, Kai Ito, Haruto Kodera, Misao Ishikawa, Noriyuki Kuroda, Kazunari Shiozaki, Hideki Endo

{"title":"Morphological characteristics of the unique periodontal structure in dolphins","authors":"Ryo Kodera, Yukiko Kajinishi, Yasuhiro Uekusa, Kai Ito, Haruto Kodera, Misao Ishikawa, Noriyuki Kuroda, Kazunari Shiozaki, Hideki Endo","doi":"10.1002/ar.25601","DOIUrl":"10.1002/ar.25601","url":null,"abstract":"Although toothed whales have dentition peculiar to mammals, little attention has been paid to the periodontal tissues that support these characteristic teeth. In this study, we clarified the anatomical characteristics of the periodontal tissue in several species of Delphinidae through three-dimensional observation using micro-computed tomography, histological observations using decalcified sections, and immunohistochemical analysis. The results indicated that the teeth and the periodontal tissues of dolphins are morphologically unique among mammals. The alveolar bone was both crude and spongy. The lamina dura, a radiopaque line observed in the alveolar bone of common mammals, was thin in dolphins, and the teeth were attached to the trabeculae with the periodontal ligament (PDL). The alveolar sockets were massive for the size of the teeth. The PDL, a collagen fiber that fills the periodontal space, was well-developed and peculiarly divided into two layers. The inner layer fibers radially spread out from the cementum, similar to the PDL in common mammals. However, the outer layer fibers penetrate the spongy bone in a complicated manner. The interstitial space between the inner and outer layers contained nerve fiber bundles that were thicker than those found in the PDL of other mammals. Sensory receptor-like structures were observed at the terminal ends of the nerve fibers. These findings indicated that the dolphin PDL is more sensitive to dental stimuli than those of other mammals, suggesting that the dolphin dentition plays a functional role as a sensory receptor, similar to tactile hair.","PeriodicalId":50965,"journal":{"name":"Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology","volume":"308 5","pages":"1438-1451"},"PeriodicalIF":2.1,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142631828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mandible composition and properties in two selected praying mantises (Insecta, Mantodea). 两只螳螂（昆虫纲，螳螂目）的下颚组成和特性。

IF 1.8 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-11-07 DOI: 10.1002/ar.25602

Malo Roze, Stanislav N Gorb, Timo Zeimet, Wencke Krings

{"title":"Mandible composition and properties in two selected praying mantises (Insecta, Mantodea).","authors":"Malo Roze, Stanislav N Gorb, Timo Zeimet, Wencke Krings","doi":"10.1002/ar.25602","DOIUrl":"https://doi.org/10.1002/ar.25602","url":null,"abstract":"Insects process their food with their cuticle-based mouthparts. These feeding structures reflect their diversity and can, in some cases, showcase adaptations in material composition, mechanical properties, and shape to suit their specific dietary preferences. To pave the way to deeply understand the interaction between mouthparts and food and to determine potential adaptations of the structures to the food, this study focuses on the mandibles of two praying mantis species. Gongylus gongylodes feeds mainly on Diptera, and Sphodromantis lineola forages on larger prey. Employing scanning electron microscopy, the mandibular morphologies were analyzed. The degree of the cuticle tanning was tested using confocal laser scanning microscopy. Furthermore, the contents of transition and alkaline earth metals in the mandible cuticle were studied using energy-dispersive X-ray spectroscopy and the mechanical properties tested by nanoindentation. We found that S. lineola mandibles show pronounced gradients of Young's modulus and hardness from the basis to the tip, which might be an adaptation against high stresses during biting and chewing. G. gongylodes, in contrast, did not show pronounced gradients, which may indicate that there is less stress involved in feeding-necessary to test in future studies. The mechanical properties of manidibles in both species are related to the degree of cuticle tanning but also positively correlate with the content of magnesium. These findings enrich our understanding of insect cuticle biology but also present new sets of data on praying mantis structures.","PeriodicalId":50965,"journal":{"name":"Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142606856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of respiratory anatomy adaptations in whales 鲸鱼呼吸解剖适应性回顾。

IF 2.1 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-11-01 DOI: 10.1002/ar.25597

Joy S. Reidenberg, Jeffrey T. Laitman

引用次数: 0

Arrangements of intramembranous muscles of wings are influenced by body mass across the radiation of phyllostomid bats 翅膀膜内肌肉的排列受整个蝙蝠群体重的影响。

IF 2.1 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-10-23 DOI: 10.1002/ar.25594

Alana Conceição-da-Silva, Nathália Siqueira Veríssimo Louzada, William Corrêa Tavares

{"title":"Arrangements of intramembranous muscles of wings are influenced by body mass across the radiation of phyllostomid bats","authors":"Alana Conceição-da-Silva, Nathália Siqueira Veríssimo Louzada, William Corrêa Tavares","doi":"10.1002/ar.25594","DOIUrl":"10.1002/ar.25594","url":null,"abstract":"Extensive research into bat flight mechanisms has highlighted the complex functional and evolutionary dynamics of their wing structures, yet the anatomical details of certain wing muscles remain elusive. In particular, the intramembranous plagiopatagiales proprii muscles, located within the plagiopatagium—an area of the wing lacking direct joint connections—exhibit remarkable variation across bat families. These muscles, which extend anteroposteriorly in macroscopic bundles, play a crucial role in wing stiffening, modulating membrane tension, and reducing wing curvature during flight. Since larger bats tend to have higher wing loading (WL; the ratio of body mass [BMa] to wing area) and may therefore experience increased patagial curvature and resultant drag, we hypothesized that body size significantly influences the evolutionary development of the plagiopatagiales proprii muscles. This study investigates the relationship between BMa and the morphology of the plagiopatagiales proprii in New World leaf-nosed bats (Phyllostomidae), employing bivariate allometry, multivariate analysis, and comparative phylogenetic methods across 24 species from eight phyllostomid subfamilies. Our findings reveal a significant phylogenetic signal in muscle architecture, along with positive evolutionary allometry in muscle area. This suggests an adaptive increase in muscle size in larger species, likely to counterbalance the increased WL, reduce wing curvature, and minimize drag. This research enhances our understanding of the functional and adaptive morphological evolution of intramembranous wing muscles in phyllostomid bats, underscoring their evolutionary significance.","PeriodicalId":50965,"journal":{"name":"Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology","volume":"308 8","pages":"2194-2211"},"PeriodicalIF":2.1,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nuclear parcellation of pontine catecholaminergic and cholinergic neurons in gray parrots and pied crow brains 灰鹦鹉和鹡鸰大脑中的脑桥儿茶酚胺能神经元和胆碱能神经元的核区分布。

IF 2.1 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-10-23 DOI: 10.1002/ar.25593

Pedzisai Mazengenya, Paul R. Manger

{"title":"Nuclear parcellation of pontine catecholaminergic and cholinergic neurons in gray parrots and pied crow brains","authors":"Pedzisai Mazengenya, Paul R. Manger","doi":"10.1002/ar.25593","DOIUrl":"10.1002/ar.25593","url":null,"abstract":"Employing immunohistochemical procedures with antibodies raised against tyrosine hydroxylase (TH) and choline acetyltransferase we identified and mapped the locus coeruleus complex (LoC) and the pontine laterodorsal tegmental (LDT) and pedunculopontine tegmental (PPN) cholinergic nuclei in the brains of a Congo gray parrot, a timneh gray parrot, and a pied crow. The LoC and LDT/PPN are centrally involved in the regulation and generation of different sleep states, and as all birds studied to date show both REM and non-REM sleep states, like mammals, we investigated whether these noradrenergic and cholinergic nuclei in the avian pons shared anatomical features with those in the mammalian pons. The LoC was parcellated into 3 distinct nuclei, including the locus coeruleus (A6), subcoeruleus (A7), and the fifth arcuate nucleus (A5), while distinct LDT and PPN nuclei were revealed. Several similarities that allow the assumption of homology of these nuclei between birds and mammals were revealed, including their location relative to each other and other structures within the pontine region, as well as a specific degree of topographical overlap of the noradrenergic and cholinergic neurons. Despite this, some differences were noted that may be of interest in understanding the differences in sleep between birds and mammals. Further anatomical and physiological studies are needed to determine whether these pontine nuclei in birds play the same role as in mammals, as while the homology is apparent, the functional analogy needs to be revealed.","PeriodicalId":50965,"journal":{"name":"Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology","volume":"308 9","pages":"2433-2449"},"PeriodicalIF":2.1,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12329394/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bone microstructure analyses in ontogenetic series of Mesosaurus tenuidens from the early Permian of Brazil 巴西二叠纪早期中龙（Mesosaurus tenuidens）个体发育系列的骨骼显微结构分析。

IF 2.1 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-10-21 DOI: 10.1002/ar.25591

Thiago Carlisbino, Brodsky Dantas Macedo de Farias, Fernando Antonio Sedor, Cesar Leandro Schultz

{"title":"Bone microstructure analyses in ontogenetic series of Mesosaurus tenuidens from the early Permian of Brazil","authors":"Thiago Carlisbino, Brodsky Dantas Macedo de Farias, Fernando Antonio Sedor, Cesar Leandro Schultz","doi":"10.1002/ar.25591","DOIUrl":"10.1002/ar.25591","url":null,"abstract":"Osteohistological evidence is widely used to infer paleobiological traits of fossil vertebrates, such as ontogeny and growth rates. Mesosaurs, an enigmatic group of aquatic reptiles from the early Permian, are the most well-known Paleozoic amniotes from Africa and South America. Their fossils are abundant in South America, ranging from the central-west region of Brazil to the southernmost areas, as well as parts of Paraguay and Uruguay. In this contribution, we examined the bone microstructure of Mesosaurus tenuidens by analyzing thin sections of axial and appendicular elements of several specimens collected from various Brazilian sites. The microstructure of the bones showed minimal histological variability among elements, predominantly composed of parallel-fibered tissues, indicating slow growth rhythm, along with increased bone density attributed to pachyosteosclerosis. The cortical area consists of poorly vascularized parallel-fibered bone tissue, which was interrupted by multiple cyclical growth marks, some of them being supernumerary, suggesting a strong influence of seasonality. Moreover, the organization of growth marks suggests distinct life history trajectories among individuals collected from different outcrops, reflecting environmental heterogeneity throughout the basin. Internally, the endosteal domain exhibits greater vascularization compared to the cortices and frequently contained calcified cartilage. In the ontogenetic series, there was a progressive filling of the medullary region from small to large individuals. The presence of the External Fundamental System (a proxy indicating somatic maturity) was observed in femora and ribs, suggesting that determinate growth was already occurring in Permian mesosaurs and may not be an exclusive specialization of crown amniotes.","PeriodicalId":50965,"journal":{"name":"Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology","volume":"308 8","pages":"2113-2140"},"PeriodicalIF":2.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142480035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects and phenotypic consequences of transient thyrotoxicosis and hypothyroidism at different stages of zebrafish Danio rerio (Teleostei; Cyprinidae) skeleton development 一过性甲状腺毒症和甲状腺功能减退对斑马鱼Danio rerio (Teleostei; Cyprinidae) 骨骼发育不同阶段的影响和表型后果。

IF 2.1 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-10-21 DOI: 10.1002/ar.25592

Vasily Borisov, Fedor Shkil

{"title":"Effects and phenotypic consequences of transient thyrotoxicosis and hypothyroidism at different stages of zebrafish Danio rerio (Teleostei; Cyprinidae) skeleton development","authors":"Vasily Borisov, Fedor Shkil","doi":"10.1002/ar.25592","DOIUrl":"10.1002/ar.25592","url":null,"abstract":"The effects and consequences of changes in thyroid hormones (THs) level are among the actively studied topics in teleost developmental and evolutionary biology. In most of the experimental models used, the altered hormonal status (either hypo- or hyperthyroidism) is a stable characteristic of the developing organism, and the observed phenotypic outcomes are the cumulative consequences of multiple TH-induced developmental changes. Meanwhile, the influence of the transient fluctuations of TH content on skeleton development has been much less studied. Here, we present experimental data on the developmental effects and phenotypic consequences of transient, pharmacologically induced thyrotoxicosis and hypothyroidism at different stages of ossified skeleton patterning in zebrafish. According to the results, the skeleton structures differed in TH sensitivity. Some showed a notable shift in the developmental timing and rate, while other demonstrated little or no response to changes in TH content. The developmental stages also differed in TH sensitivity. We identified a relatively short developmental period, during which changes in TH level significantly increased the developmental instability and plasticity, leading to phenotypic consequences comparable to those in fish with a persistent hypo- or hyperthyroidism. These findings allow this period to be considered as a critical developmental window.","PeriodicalId":50965,"journal":{"name":"Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology","volume":"308 8","pages":"2250-2274"},"PeriodicalIF":2.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142480036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pancreatic inflammation induced by hypothyroidism in female rabbits is associated with cholesterol accumulation and a reduced expression of CYP51A1, FXRβ, and PPARβ/δ 甲状腺功能减退症诱发的雌兔胰腺炎症与胆固醇积累以及 CYP51A1、FXRβ 和 PPARβ/δ 的表达减少有关。

IF 2.1 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-10-15 DOI: 10.1002/ar.25590

Rubicela Rojas-Juárez, Julia Rodríguez-Castelán, Ismael Cuatecontzi-Fuentes, Maribel Mendez-Tepepa, Rosalía Cruz-Lumbreras, Jorge Rodríguez-Antolín, Omar Elind Arroyo-Helguera, Estela Cuevas-Romero

{"title":"Pancreatic inflammation induced by hypothyroidism in female rabbits is associated with cholesterol accumulation and a reduced expression of CYP51A1, FXRβ, and PPARβ/δ","authors":"Rubicela Rojas-Juárez, Julia Rodríguez-Castelán, Ismael Cuatecontzi-Fuentes, Maribel Mendez-Tepepa, Rosalía Cruz-Lumbreras, Jorge Rodríguez-Antolín, Omar Elind Arroyo-Helguera, Estela Cuevas-Romero","doi":"10.1002/ar.25590","DOIUrl":"10.1002/ar.25590","url":null,"abstract":"In women and animal models, hypothyroidism induces hypercholesterolemia, pancreatitis, and insulitis. We investigated whether lipids are involved in the effects of hypothyroidism in the pancreas. Control (n = 6) and hypothyroid (n = 6) adult female rabbits were used. We quantified serum and pancreatic triacylglycerol and total cholesterol levels, the oxidative and antioxidant status, and the expression of low-density lipoprotein cholesterol receptor (LDLR) in the pancreas. Inflammation of the pancreas was evaluated by infiltration of immune cells positive to CD163 and α-farnesoid receptor (FXRα). Other lipid players involved in both inflammation and insulin secretion of the pancreas, such as lanosterol 14-α-demethylase (CYP51A1), β-farnesoid receptor (FXRβ), 3β-hydroxysteroid dehydrogenase (3β-HSD), and peroxisome proliferator-activated receptor β (PPARβ/δ), were quantified. Groups were compared by t-Student or U-Mann–Whitney tests (p ≤ 0.05). Hypothyroidism induced hypercholesterolemia and a high cholesterol accumulation in the pancreas of female rabbits, without affecting oxidative or antioxidative status nor the expression of LDLR. The pancreas of hypothyroid females showed inflammation identified by a great infiltration of immune cells, macrophages CD163+, and loss of expression of FXRα+ in immune cells. Moreover, a reduced expression of CYP51A1, FXRβ, and PPARβ/δ, but not 3β-HSD, in the hypothyroid pancreas was found. Pancreatitis and insulitis promoted by hypothyroidism may be related to the accumulation of cholesterol, lanosterol actions, and the activation of PPARβ/δ. All inflammatory markers evaluated in this study are related to glucose regulation, suggesting the link between hypothyroidism and diabetes.","PeriodicalId":50965,"journal":{"name":"Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology","volume":"308 5","pages":"1517-1528"},"PeriodicalIF":2.1,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142480038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring elbow kinematics in the central bearded dragon (Pogona vitticeps) using XROMM: Implications for the role of forearm long-axis rotation in non-avian reptile posture and mobility 利用 XROMM 探索中胡须龙（Pogona vitticeps）的肘关节运动学：前臂长轴旋转在非鸟类爬行动物姿势和活动性中的作用。

IF 2.1 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-10-14 DOI: 10.1002/ar.25588

Matthew F. Bonnan, Lexi Moore Crisp, Ashley Barton, Jenna Dizinno, Kelly Muller, Justine Smith, Jenna Walker

{"title":"Exploring elbow kinematics in the central bearded dragon (Pogona vitticeps) using XROMM: Implications for the role of forearm long-axis rotation in non-avian reptile posture and mobility","authors":"Matthew F. Bonnan, Lexi Moore Crisp, Ashley Barton, Jenna Dizinno, Kelly Muller, Justine Smith, Jenna Walker","doi":"10.1002/ar.25588","DOIUrl":"10.1002/ar.25588","url":null,"abstract":"The functional morphology and kinematics of the elbow joint remain relatively understudied in squamates. Previous investigations of lizard elbow morphology and kinematics suggest long-axis rotation (LAR) of the radius and ulna during stance allows the manus to remain pronated during forelimb retraction. Using XROMM (X-ray Reconstruction of Moving Morphology), we explored the range of 3D movements and kinematics of the humerus, radius, and ulna in three adult male Central bearded dragons (Pogona vitticeps) during trackway walking. Our data indicate that the elbow joint of P. vitticeps experiences significant rotations in all three dimensions and that the radius and ulna adduct and rotate laterally on their long axes relative to the elbow joint and to one another during stance. These movements allow the distal ends of the radius and ulna to remain in a configuration necessary for manus pronation. These data support previous inferences that the radius and ulna of lizards move independently at the wrist joint. We suggest that independent LAR of the radius and ulna relative to the elbow joint and to one another may be an ancestral mechanism in lizards and perhaps more broadly across non-avian reptiles.","PeriodicalId":50965,"journal":{"name":"Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology","volume":"308 8","pages":"2173-2193"},"PeriodicalIF":2.1,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142480037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First record of rhynchosaurs (Archosauromorpha: Rhynchosauria: Hyperodapedontinae) from the early Late Triassic Santacruzodon Assemblage Zone of the Santa Maria Supersequence, Brazil 巴西圣玛丽亚超序晚三叠世 Santacruzodon 组合区的第一条雷龙（Archosauromorpha: Rhynchosauria: Hyperodapedontinae）记录。

IF 2.1 4区医学

Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology Pub Date : 2024-10-11 DOI: 10.1002/ar.25589

Francesco Battista, Agustín G. Martinelli, Ana Maria Ribeiro, Marco Brandalise de Andrade, Cesar L. Schultz

{"title":"First record of rhynchosaurs (Archosauromorpha: Rhynchosauria: Hyperodapedontinae) from the early Late Triassic Santacruzodon Assemblage Zone of the Santa Maria Supersequence, Brazil","authors":"Francesco Battista, Agustín G. Martinelli, Ana Maria Ribeiro, Marco Brandalise de Andrade, Cesar L. Schultz","doi":"10.1002/ar.25589","DOIUrl":"10.1002/ar.25589","url":null,"abstract":"Rhynchosauria is a group of extinct, exclusively Triassic, terrestrial, and herbivorous archosauromorphs, characterized by a peculiar maxillary-mandibular apparatus. They reached global distribution during the Carnian, with the Hyperodapedontinae clade. The rhynchosaurian record from South America is included in the Ladinian-?earliest Carnian Dinodontosaurus Assemblage Zone (Pinheiros-Chiniquá Sequence, Brazil) and Tarjadia Assemblage Zone (Chañares Formation, Argentina), and for strictly Carnian Hyperodapedon Assemblage Zone (Lower Candelária Sequence, Brazil) and Ischigualasto Formation (Argentina). Here, we present the first record of Hyperodapedontinae from the Brazilian Early Carnian Santacruzodon Assemblage Zone (Santa Cruz Sequence). The most diagnostic elements belong to a nearly complete left pes, which presents a combination of hyperodapedontine traits. The presence of a second individual of cf. Hyperodapedontinae is based on a fragmentary, isolated left metatarsal IV. An isolated fragment of premaxilla could belong to the second specimen (based on preservation mode) or to a third individual. This new report fills a gap within the South American rhynchosaurian distribution, strengthening biostratigraphic correlation with other regions from Gondwana (i.e., Madagascar), where similar and coeval faunas are known. The inclusion of these specimens in a phylogenetic dataset resulted in low resolution results, due to missing data because postcranial characters for rhynchosaurs are still poorly explored.","PeriodicalId":50965,"journal":{"name":"Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology","volume":"308 8","pages":"2141-2159"},"PeriodicalIF":2.1,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142401870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0