Anatomical record (Hoboken, N.J. : 2007)最新文献_第3页

An elastic segment of the whisker shaft enables coding of the whisking phase via whisker torsion in rats and mice. 须轴的弹性段可以通过大鼠和小鼠的须扭转来编码须相。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-09-09 DOI: 10.1002/ar.70051

Sebastian Haidarliu, Guy Nelinger, Luka Gantar, Ehud Ahissar, Inbar Saraf-Sinik

引用次数: 0

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications. 描述Moschognathus whaitsi （Dinocephalia, Tapinocephalia）的头骨、脑壳和牙列，及其古生物学和行为学意义。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-09-08 DOI: 10.1002/ar.70038

Tristen Lafferty, Luke A Norton, Aliénor Duhamel, Julien Benoit

{"title":"Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications.","authors":"Tristen Lafferty, Luke A Norton, Aliénor Duhamel, Julien Benoit","doi":"10.1002/ar.70038","DOIUrl":"https://doi.org/10.1002/ar.70038","url":null,"abstract":"A subadult Moschognathus whaitsi from the Eastern Cape Province, South Africa, was scanned using synchrotron radiation X-ray computed tomography (SRXCT). Its subadult state allowed the cranial bones and teeth to be identified and individually reconstructed in 3D. A complete description of every preserved cranial bone is here produced, with special attention given to the braincase. An evaluation of a frontal abscess has provided insight into the potential behavior of Moschognathus, regarding the long-standing hypothesis of dinocephalian headbutting. The first 3D description of tapinocephalian dentition shows the unique talon-and-heel tooth morphology and expands our understanding of the replacement patterns in the dentition of basal therapsids. We report evidence of at least three successive replacement generations developing in the incisiform dentition of M. whaitsi simultaneously. The arrangement of these successive generations of replacement incisiform teeth is reminiscent of the complex dental batteries described in sauropod dinosaurs. Furthermore, an alternating pattern of replacement is apparent and suggests that the upper and lower rows of functional teeth were comprised of at least two tooth generations.","PeriodicalId":520555,"journal":{"name":"Anatomical record (Hoboken, N.J. : 2007)","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145025109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Additional material of Jiucaiyuangnathus confusus (Therocephalia) from the Lower Triassic Jiucaiyuan Formation, Xinjiang, China. 新疆下三叠统酒菜园组酒菜园nathus confusus （Therocephalia）的补充资料。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-08-29 DOI: 10.1002/ar.70039

Jun Liu, Fernando Abdala

{"title":"Additional material of Jiucaiyuangnathus confusus (Therocephalia) from the Lower Triassic Jiucaiyuan Formation, Xinjiang, China.","authors":"Jun Liu, Fernando Abdala","doi":"10.1002/ar.70039","DOIUrl":"https://doi.org/10.1002/ar.70039","url":null,"abstract":"A new baurioid therocephalian, Jiucaiyuangnathus confusus, was recently described from the Lower Triassic Jiucaiyuan Formation of Jimusar, Xinjiang, China. Here, two or three newly collected specimens from the same horizon of Turpan, Xinjiang, including a complete skull with lower jaw and partial skeletons, are referred to this species. The new skull is slightly larger than that of the holotype. Histological features, in conjunction with other anatomical characters, indicate known specimens should be early juveniles with an overall rapid osteogenesis and probably less than 1 year old at death. Different from the holotype, the new specimen has six upper incisors, a short diastema between the last incisor and first maxillary tooth, more distinct canines (and canine boss), and 15 dentary teeth. The new finding indicates that reduced size and/or absence of canine in the juvenile would not be a useful phylogenetic character for therocephalian. The prootics of the new specimen show unreported features from other therocephalians: a prominent medial process (may be present in Olivierosuchus) and strongly folded dorsal margin of the lateral surface. After the description of the new material, the following diagnostic features are proposed for the taxon: maxillary palatal process contacts the premaxillary vomerine process and the vomer; five to six upper incisors. Jiucaiyuangnathus confusus is the best known Baurioidea from Pangea North, and although resembling several features to Ericiolacerta parva of Pangea South, it seems quite likely that most of the similarities are related to both taxa being represented by specimens of early ontogenetic age.","PeriodicalId":520555,"journal":{"name":"Anatomical record (Hoboken, N.J. : 2007)","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144985914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel cartilage type in the sclera of Chelonia mydas: First report. 甲鱼巩膜中一种新的软骨类型：首次报道。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-08-29 DOI: 10.1002/ar.70041

A L M Souza, H Jerdy, L M Conti, R A Hauser-Davis, E C Q Carvalho

引用次数: 0

Bone microstructure records complete growth history of captive springbok (Antidorcas marsupialis). 圈养跳羚（Antidorcas marsupialis）的骨骼显微结构记录了其完整的生长历史。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-08-29 DOI: 10.1002/ar.70042

Christian T Heck, Maha A Elturki, Holly N Woodward

{"title":"Bone microstructure records complete growth history of captive springbok (Antidorcas marsupialis).","authors":"Christian T Heck, Maha A Elturki, Holly N Woodward","doi":"10.1002/ar.70042","DOIUrl":"https://doi.org/10.1002/ar.70042","url":null,"abstract":"Bone microstructure contains records of life history events, growth patterns, and biomechanical function. Physiologically stressful events such as birth, weaning, and the onset of unfavorable seasons can result in the formation of cortical growth lines. Osteohistological examination of modern taxa with known life histories aids in interpreting bone microstructure of wild and extinct animals. Despite this utility, in-depth evaluations of mammalian bone histology remain relatively scarce. Here, we describe forelimb and hindlimb long bone microstructure of a limited ontogenetic series of captive-raised springbok (Antidorcas marsupialis). Our sample consists of animals of known age for directly comparing cortical growth mark counts to age at death. The bone cortices of springbok long bones generally consist of an inner cortex of endosteal lamellar tissue with regions of coarse compacted cancellous bone. The mid-cortex is fibrolamellar bone with laminar to plexiform vascularity interrupted by annual growth marks, though coarse compacted cancellous bone extends into the mid-cortex regionally. The outer cortex is an external fundamental system composed of avascular parallel-fiber tissue. This outer lamellar tissue marks the attainment of skeletal maturity. Birth lines, weaning lines, and lines of arrested growth are present throughout most of the sample, though medullary cavity expansion and remodeling processes have obliterated growth marks in some areas. Growth marks are found within the mid-cortical fibrolamellar tissue and the external fundamental system. The onset of the EFS aligns with the attainment of skeletal maturity based on mid-cortical growth mark counts. Mid-cortical growth marks in springbok appear to be a reliable indicator of age prior to skeletal maturity.","PeriodicalId":520555,"journal":{"name":"Anatomical record (Hoboken, N.J. : 2007)","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144985834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Relationship between localization of annexins and dentinogenesis during rat tooth development. 大鼠牙齿发育过程中膜联蛋白定位与牙本质形成的关系。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-08-29 DOI: 10.1002/ar.70043

Toru Shibui, Akihiro Hosoya, Masami Takahashi, Hiroaki Takebe, Shunichi Shibata, Kazuharu Irie

{"title":"Relationship between localization of annexins and dentinogenesis during rat tooth development.","authors":"Toru Shibui, Akihiro Hosoya, Masami Takahashi, Hiroaki Takebe, Shunichi Shibata, Kazuharu Irie","doi":"10.1002/ar.70043","DOIUrl":"https://doi.org/10.1002/ar.70043","url":null,"abstract":"Annexins (ANXAs) are a calcium-dependent, membrane-bound protein superfamily involved in the transport of matrix vesicle ion channels and Ca2+ ions, which are essential for early hard tissue calcification. However, the localization of ANXAs in dentin calcification is unknown. To analyze the localization and function of ANXA1, 2, 5, and 6 in odontoblast differentiation and dentin calcification, we examined the immunohistochemical localization of ANXAs in developing rat molars. During the bud (E15) and cap (E17) stages, ANXA-positive cells were not observed in the dental mesenchyme or dental papillae. In the early bell stage (E20), many ANXA1-, 2-, 5-, 6-, and CD31-positive cells were observed around the blood vessels of the dental papillae. In the late bell stage (P2), CD31, ANXA1, and ANXA2 immunoreactivity was observed around blood vessels in the vicinity of odontoblasts, but little ANXA5 and ANXA6 immunoreactivity was observed. ANXA2 immunoreactivity was observed in the cytoplasm and plasma membrane of the odontoblast. Furthermore, the immunoreactivity of plasma membrane calcium-ATPase (PMCA-ATPase), one of the Ca2+ ion efflux systems in odontoblasts, was observed to be co-localized with ANXA2. On postnatal Day 7 (P7), PMCA-ATPase immunoreactivity in odontoblasts decreased compared with P2. At P7 and 5 weeks of age (P35), little immunoreactivity for ANXAs was observed in odontoblasts and perivascular areas close to odontoblasts. ANXA1-, 2-, 5-, and 6-positive cells may be involved in vascular induction in the developing dental papillae, and ANXA2 may be involved in early dentin calcification.","PeriodicalId":520555,"journal":{"name":"Anatomical record (Hoboken, N.J. : 2007)","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144985872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inside a duck-billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia. 鸭嘴恐龙内部：巴塔哥尼亚上白垩纪华龙（鸭嘴龙科）的椎骨微结构。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-08-28 DOI: 10.1002/ar.70040

Tito Aureliano, Aline M Ghilardi, Jonatan Kaluza, Agustín G Martinelli

{"title":"Inside a duck-billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia.","authors":"Tito Aureliano, Aline M Ghilardi, Jonatan Kaluza, Agustín G Martinelli","doi":"10.1002/ar.70040","DOIUrl":"https://doi.org/10.1002/ar.70040","url":null,"abstract":"Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post-Carnian saurischians, it remains absent within Ornithischia, challenging phylogenetic predictions. We used computed tomography to examine the internal vertebral microanatomy of three Huallasaurus australis specimens, a saurolophine hadrosaur from the Late Cretaceous of Patagonia, Argentina. The internal structure reveals a relatively dense trabecular architecture lacking evidence of invasive pneumaticity across the centra, neural arches, and neural spines, contrasting with the condition in post-Carnian saurischians. The internal vertebral pattern of Huallasaurus resembles that of silesaurs more than other apneumatic archosauriforms. These observations are consistent with the hypothesis that invasive air sac diverticula did not evolve in Ornithischia and align with the previously proposed \"pelvic bellows\" ventilation model for the group. The internal vertebral architecture in this hadrosaur shows superficial similarities to the trabecular structure seen in some large mammals, although functional equivalence remains speculative. The absence of invasive air sacs in Huallasaurus, combined with dense trabecular matrix and thin cortical walls, may have supported large body sizes or accommodated intraosseous fat reserves, though this requires further testing. This stock of fatty tissues could have provided energy for these hadrosaurs during regional migration, as observed in modern migratory mammals.","PeriodicalId":520555,"journal":{"name":"Anatomical record (Hoboken, N.J. : 2007)","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144985842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From womb to maturity: Prenatal and postnatal cranial growth in goat (Capra hircus). 从子宫到成熟：山羊（Capra hircus）的产前和产后颅骨生长。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-08-13 DOI: 10.1002/ar.70032

Valentina Segura, David Flores, Marcelo R Sánchez Villagra

{"title":"From womb to maturity: Prenatal and postnatal cranial growth in goat (Capra hircus).","authors":"Valentina Segura, David Flores, Marcelo R Sánchez Villagra","doi":"10.1002/ar.70032","DOIUrl":"https://doi.org/10.1002/ar.70032","url":null,"abstract":"The skull is a key marker of morphological diversity in terms of ontogeny and phylogeny; however, prenatal growth patterns in mammals remain poorly understood. Changes in skull growth from embryonic to postnatal stages are influenced by multiple factors, including the maturity of offspring at birth within the altricial-precocial continuum, dietary transitions during the postnatal period, and the development of secondary cranial structures such as horns. In this study, we analyzed pre- and postnatal skull growth in goat (Capra hircus) using three-dimensional geometric morphometrics and linear allometry. Our results indicate that the cranial growth pattern exhibited a developmental shift between the prenatal and postnatal stages in which it deviated from a single continuous trajectory, thus revealing marked differences that became accentuated in adulthood. Prenatal and postnatal ontogenetic allometry differed significantly, with the prenatal phase displaying a comparatively higher growth rate in cranial variables associated with the splanchnocranium and neurocranium. These findings suggest that goats exhibit prenatal and postnatal growth strategies that are consistent with those of precocial mammals. Stage-specific allometric changes in the neurocranium and splanchnocranium align with different functional roles throughout development. The development of horns alters cranial morphology, thereby placing adults in a distinct position within the multivariate morphospace.","PeriodicalId":520555,"journal":{"name":"Anatomical record (Hoboken, N.J. : 2007)","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144850320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphological and morphometric aspects of the equine aortic valve: New insights for comparative studies in mammals. 马主动脉瓣的形态学和形态学方面：哺乳动物比较研究的新见解。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-08-12 DOI: 10.1002/ar.70036

Vitor Pires Pereira, Victoria Brondani de Oliveira, Carlos Eduardo Seyfert, Luciano de Morais-Pinto

{"title":"Morphological and morphometric aspects of the equine aortic valve: New insights for comparative studies in mammals.","authors":"Vitor Pires Pereira, Victoria Brondani de Oliveira, Carlos Eduardo Seyfert, Luciano de Morais-Pinto","doi":"10.1002/ar.70036","DOIUrl":"https://doi.org/10.1002/ar.70036","url":null,"abstract":"New data on the equine aortic valve obtained using advanced techniques is especially important given the greater availability of animal models for translational research. Here we characterized the morphological and morphometric aspects of the equine aortic valve from 60 healthy hearts collected at equine abattoirs. The valve cusps were analyzed by light and scanning electron microscopy, and the morphometric data were analyzed using ImageJ software in Fiji version 1.51 J. The aortic semilunar cusps were partially translucent and white with grayish nuances. As revealed under light microscopy, both sides of the valve cusps were coated with endothelial cells, and the body was composed of a fibromolecular arrangement of type I and III collagen and elastin, as well as an extracellular matrix rich in cells. The mean total area of the left semilunar valve was 8.9 cm2 and the valve contained a mean of eight tendinous bundles; the mean total area of the right semilunar valve was 10.1 cm2 and it contained six tendinous bundles. The septal semilunar valve was, on average, 9.9 cm2 and contained nine tendinous bundles. In both cusps, the relative elastin ranged from 10.9% to 12.6%, and collagen from 41.5% to 48.8%, with no significant differences between the cusps. The morphological and morphometric aspects of the equine aortic valve are similar among the previously described mammalian species, indicating that the characteristics observed in this study are remarkably conserved among genera throughout the evolutionary process. This has contributed to an increased availability of viable animal models for translational studies.","PeriodicalId":520555,"journal":{"name":"Anatomical record (Hoboken, N.J. : 2007)","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144839738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation and rapid identification of later stages during embryonic development of the oviparous lizard Sceloporus aeneus (Squamata: Phrynosomatidae). 卵生蜥蜴Sceloporus aeneus胚胎发育后期的估计和快速鉴定（鳞目：蜥蜥科）。

IF 2.1

Anatomical record (Hoboken, N.J. : 2007) Pub Date : 2025-08-08 DOI: 10.1002/ar.70033

Nivia Rocio Antonio-Rubio, Maricela Villagrán-SantaCruz, Martha Elena Díaz-Hernández, Norma Moreno-Mendoza

{"title":"Estimation and rapid identification of later stages during embryonic development of the oviparous lizard Sceloporus aeneus (Squamata: Phrynosomatidae).","authors":"Nivia Rocio Antonio-Rubio, Maricela Villagrán-SantaCruz, Martha Elena Díaz-Hernández, Norma Moreno-Mendoza","doi":"10.1002/ar.70033","DOIUrl":"https://doi.org/10.1002/ar.70033","url":null,"abstract":"Stages of embryonic development for reptiles have been presented in tables that may include all or part of embryonic development. When oviposition occurs in some lizards, embryos are already in the later stages of development; likewise, the size of the eggs increases as incubation time progresses. However, it is unclear whether there is a relationship between the size of the egg and embryo development. Therefore, the objective of this study was to define whether there is a correlation between the size and volume of eggs and the embryonic stage of the lizard Sceloporus aeneus (Squamata: Phrynosomatidae). This study described the most relevant morphological changes in embryogenesis, from the moment of oviposition until shortly before hatching. Our results showed a statistically significant correlation between the stage of embryo development and the size and volume of eggs. Eleven development stages were characterized, initiating at the moment eggs were laid. Each developmental stage was mainly identified according to the morphological characteristics of the limbs and the body pigmentation. Our study links the growth of eggs with the developmental stage of embryos, which can provide a useful tool to those studies that require specific stages of the embryos and in those that undertake analysis of biological processes, such as organogenesis. The S. aeneus lizard manifests similar morphological and skeletal limb development to that documented for other species. Thus, analysis of limbs represents a quick and easy way to establish stages of embryonic development in S. aeneus, allowing us to compare their development with other species.","PeriodicalId":520555,"journal":{"name":"Anatomical record (Hoboken, N.J. : 2007)","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144805514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0