Zoological Journal of the Linnean Society最新文献_第4页

Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth 突破蛋壳：Lacerta agilis（有鳞类：单体动物）前下颌牙齿的胚胎发育，特别强调卵齿

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-08-09 DOI: 10.1093/zoolinnean/zlae096

Paweł Kaczmarek, Brian Metscher, Magdalena Kowalska, Weronika Rupik

{"title":"Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth","authors":"Paweł Kaczmarek, Brian Metscher, Magdalena Kowalska, Weronika Rupik","doi":"10.1093/zoolinnean/zlae096","DOIUrl":"https://doi.org/10.1093/zoolinnean/zlae096","url":null,"abstract":"The egg tooth of squamates is a true tooth that allows them to break, tear, or cut the eggshell during hatching. In this clade there are some uncertainties concerning the egg tooth implantation geometry, the number of germs, and their fates during embryonic development. Here, we used X-ray microtomography and light microscopy, focusing on the egg tooth and remaining premaxillary teeth of the sand lizard (Lacerta agilis, Squamata: Unidentata). The developing egg tooth of this species passes through all the classic stages of tooth development. We did not find any evidence that the large size of the egg tooth is related to the merging of two egg tooth germs, which has recently been suggested to occur in snakes. Instead, this feature can be attributed to the delayed formation of the neighbouring regular premaxillary teeth. This might provide more resources to the developing egg tooth. At the last developmental stage, the egg tooth is a large, midline structure, bent forward as in most oviparous Unidentata. It is characterized by pleurodont implantation, and its base is attached to the pleura and a peculiar ridge of the alveolar bone. The attachment tissue contains periodontal ligament-like tissue, acellular cementum-like tissue, and alveolar bone.","PeriodicalId":49333,"journal":{"name":"Zoological Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141910295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The radiation of Austral teals (Aves: Anseriformes) and the evolution of flightlessness 澳凫的辐射（鸟类：凫形目）与不会飞的进化

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-08-08 DOI: 10.1093/zoolinnean/zlae036

Hanna S Rosinger, Olga Kardailsky, Martyn Kennedy, Hamish G Spencer, Florian M Steiner, Birgit C Schlick-Steiner, Nicolas J Rawlence, Michael Knapp

{"title":"The radiation of Austral teals (Aves: Anseriformes) and the evolution of flightlessness","authors":"Hanna S Rosinger, Olga Kardailsky, Martyn Kennedy, Hamish G Spencer, Florian M Steiner, Birgit C Schlick-Steiner, Nicolas J Rawlence, Michael Knapp","doi":"10.1093/zoolinnean/zlae036","DOIUrl":"https://doi.org/10.1093/zoolinnean/zlae036","url":null,"abstract":"The origin and evolution in the Southern Hemisphere of the Austral teals, consisting of the grey-teal and brown-teal species complexes, remains poorly understood owing to limited molecular data. With the group containing multiple independent examples of flight loss, understanding the evolutionary history of the group is of significant interest for functional genomic studies into the evolution of flightlessness. Here, we present the first whole-mitogenome-based phylogeny of the Austral teals. We show that the group diverged from a common ancestor with mallards in the late Miocene and soon after radiated into the brown-teal and grey-teal lineages, in addition to the widely distributed pintails and green-winged teals. The brown-teal species complex, which includes the volant brown teal, the flight-impaired, sub-Antarctic Auckland Island teal, and the flightless, Chatham Island and sub-Antarctic Campbell Island teals, radiated within the past 0.9–1.8 Myr. The divergence of the extinct Chatham Island teal and the colonization of the Auckland and Campbell Islands occurred from mainland New Zealand. Morphological changes towards flightlessness are also present in the volant brown teal on mainland New Zealand, suggesting that this group was on the pathway to flightlessness, a trend that accelerated in some insular island lineages.","PeriodicalId":49333,"journal":{"name":"Zoological Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New insights into the evolution and biogeography of freshwater planarians on islands in the Tyrrhenian Sea, Western Mediterranean Basin, with the integrative description of a new endemic species from Corsica (Platyhelminthes: Tricladida: Dugesia) 对西地中海盆地第勒尼安海岛屿淡水浮游动物的进化和生物地理学的新认识，以及对科西嘉岛新特有物种的综合描述（扁形动物：Tricladida: Dugesia）

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-08-08 DOI: 10.1093/zoolinnean/zlae080

Daniel Dols-Serrate, Giacinta Angela Stocchino, Paula Nuin-Villabona, Ronald Sluys, Marta Riutort

{"title":"New insights into the evolution and biogeography of freshwater planarians on islands in the Tyrrhenian Sea, Western Mediterranean Basin, with the integrative description of a new endemic species from Corsica (Platyhelminthes: Tricladida: Dugesia)","authors":"Daniel Dols-Serrate, Giacinta Angela Stocchino, Paula Nuin-Villabona, Ronald Sluys, Marta Riutort","doi":"10.1093/zoolinnean/zlae080","DOIUrl":"https://doi.org/10.1093/zoolinnean/zlae080","url":null,"abstract":"A recent study on the freshwater planarian fauna of Corsica and Sardinia established that the formerly presumed single species Dugesia benazzii subsumed a complex of species. In that study, a thorough integrative taxonomic approach, combining molecular, morphological, and karyological data, uncovered the presence of two new endemic species. For the present study, additional samplings were conducted on Corsica, covering several new localities. The data obtained were added to our previous datasets, which included information on specimens collected from both islands. By taking a similar integrative approach to the prior study, we here describe another new endemic species from Corsica, Dugesia xeropotamica. Although our results support the separate status of this new species, it also turned out that the evolutionary relationships among species of the Corso-Sardinian clade remain unclear, because the relationships are not well resolved. Additionally, we corroborate the presence of Dugesia mariae on the Tyrrhenian islets of Montecristo and Molara, representing new records for this group of Dugesia species in the region of the Tyrrhenian Sea. In all, our findings indicate that the evolutionary and biogeographical history of Dugesia species in this region of the Western Mediterranean is more intricate than previously thought.","PeriodicalId":49333,"journal":{"name":"Zoological Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular phylogeny of Trictenotomidae (Coleoptera: Tenebrionoidea): insights into species validation and biogeography of genus Autocrates Trictenotomidae (Coleoptera: Tenebrionoidea) 的分子系统学：对 Autocrates 属物种验证和生物地理学的启示

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-08-08 DOI: 10.1093/zoolinnean/zlae092

Seunghyun Lee, Alain Drumont, Dmitry Telnov, Seunghwan Lee, Ming Bai

{"title":"Molecular phylogeny of Trictenotomidae (Coleoptera: Tenebrionoidea): insights into species validation and biogeography of genus Autocrates","authors":"Seunghyun Lee, Alain Drumont, Dmitry Telnov, Seunghwan Lee, Ming Bai","doi":"10.1093/zoolinnean/zlae092","DOIUrl":"https://doi.org/10.1093/zoolinnean/zlae092","url":null,"abstract":"Trictenotomidae, one of the most charismatic and enigmatic groups of beetles, known for their large size and distinctive mandibles, is widely distributed throughout tropical and subtropical Asia. New species are continually being discovered, and the known range of the group has been expanded considerably by the discovery of Autocrates maqueti Drumont in the Korean Peninsula, ~2,000 km from its previously known distribution in the Chinese mainland highlands. A comprehensively sampled multigene phylogenetic tree of Trictenotomidae, including all six species of Autocrates and five species of Trictenotoma, was reconstructed using multigene data. Using the resulting phylogeny, we performed divergence time estimation, biogeographical assessments, and molecular species delimitation. All six known species of the genus Autocrates were found to be valid in all four molecular species delimitation scenarios, indicating the need for further taxonomic research on these poorly understood taxa. The A. maqueti population in South Korea forms a genetically distinct clade in all genetic analyses, suggesting that it is a natural distribution rather than a result of anthropogenically driven spread. The Korean A. maqueti population is likely to have been isolated since ~1.8 Mya, when the Yellow Sea was still a landmass, highlighting the need for targeted conservation measures in South Korea.","PeriodicalId":49333,"journal":{"name":"Zoological Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Taxonomy and trans-Beringian biogeography of the pond snails (Gastropoda: Lymnaeidae) of East Asia: an integrative view 东亚池塘蜗牛（腹足纲：蜗牛科）的分类学和跨白令海生物地理学：综合观点

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-08-03 DOI: 10.1093/zoolinnean/zlae083

Olga V Aksenova, Maxim V Vinarski, Tadashi Itagaki, Yuma Ohari, Tatsuo Oshida, Sang Ki Kim, Jin Hee Lee, Alexander V Kondakov, Irina S Khrebtova, Alena A Soboleva, Oksana V Travina, Svetlana E Sokolova, Dmitry M Palatov, Yulia V Bespalaya, Ilya V Vikhrev, Mikhail Yu Gofarov, Ivan N Bolotov

{"title":"Taxonomy and trans-Beringian biogeography of the pond snails (Gastropoda: Lymnaeidae) of East Asia: an integrative view","authors":"Olga V Aksenova, Maxim V Vinarski, Tadashi Itagaki, Yuma Ohari, Tatsuo Oshida, Sang Ki Kim, Jin Hee Lee, Alexander V Kondakov, Irina S Khrebtova, Alena A Soboleva, Oksana V Travina, Svetlana E Sokolova, Dmitry M Palatov, Yulia V Bespalaya, Ilya V Vikhrev, Mikhail Yu Gofarov, Ivan N Bolotov","doi":"10.1093/zoolinnean/zlae083","DOIUrl":"https://doi.org/10.1093/zoolinnean/zlae083","url":null,"abstract":"In this work, we present an integrative revision of the Lymnaeidae from the northeastern margin of Asia (Far East Russia, Japan, and Korea) and Alaska. According to our results, 14 native species inhabit this region, belonging to eight genera in two subfamilies (Lymnaeinae: Dallirhytis, Galba, Walhiana, Ladislavella, and Lymnaea; and Amphipepleinae: Kamtschaticana, Orientogalba, and Radix). Four of these species are new to science and three of them are described in this paper. Additionally, three established alien species are recorded from Japan (Pseudosuccinea columella, Galba schirazensis, and Galba humilis). The Japanese Archipelago represents an evolutionary hotspot of pond snail diversity, encompassing seven native species, three of which are endemic. The faunal connections between North America and northeastern Asia are discussed in the context of historical biotic interchange across the Beringian Land Bridge. Two cold-tolerant pond snails share high-latitude but localized ranges, being endemic to the Beringian Arctic: Dallirhytis atkaensis (Chukchi Peninsula, Alaska, and Aleutian Islands) and Walhiana arctica comb. nov. (Alaska). Our findings indicate that the Beringian Land Bridge has played a role in freshwater faunal exchanges between northeastern Asia and western North America.","PeriodicalId":49333,"journal":{"name":"Zoological Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141887414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular phylogeny of Chinese raspy crickets (Orthoptera: Gryllacrididae) reveals incongruences in current classification 中国蟋蟀（直翅目：蝼蛄科）的分子系统发育揭示了当前分类的不一致性

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-08-01 DOI: 10.1093/zoolinnean/zlae051

Shi-Yu Li, Yi-Jiao Liu, Jing-Yi Xu, Zi-Xu Yin, Zhu-Qing He

{"title":"Molecular phylogeny of Chinese raspy crickets (Orthoptera: Gryllacrididae) reveals incongruences in current classification","authors":"Shi-Yu Li, Yi-Jiao Liu, Jing-Yi Xu, Zi-Xu Yin, Zhu-Qing He","doi":"10.1093/zoolinnean/zlae051","DOIUrl":"https://doi.org/10.1093/zoolinnean/zlae051","url":null,"abstract":"The current classification system of the family Gryllacrididae primarily relies on morphological characteristics, with limited molecular studies conducted. In this study, we sequenced five genes (COI, COII, Cytb, 18S, and 28S) from a total of 46 gryllacridid individuals mainly from China. Subsequently, we utilized both the maximum likelihood method and the Bayesian inference method to construct a phylogenetic tree, aiming to elucidate the phylogenetic relationships within Gryllacrididae from China. Our results indicate that the genera Phryganogryllacris Karny, Capnogryllacris Karny, and Eugryllacris Karny are not monophyletic. Thus, we redescribe these genera, resurrect two genera (Marthogryllacris Karny stat. resurr. and Borneogryllacris Karny stat. resurr.), erect six new genera (Dracogryllacris gen. nov., Magnigryllacris gen. nov., Radigryllacris gen. nov., Sericgryllacris gen. nov., Bicornisgryllacris gen. nov., and Tenuigryllacris gen. nov.), and described two new species (Tenuigryllacris huanglianensis Li, Yin & He sp. nov. and Tenuigryllacris yingjiangensis Li, Yin & He sp. nov.). Besides, subgenus Bianigryllacris Cadena-Castañeda is a synonym of Apterolarnaca Gorochov.","PeriodicalId":49333,"journal":{"name":"Zoological Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141877506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of fossoriality in microteiid lizards 微体蜥蜴的化石进化

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-07-25 DOI: 10.1093/zoolinnean/zlae089

Bruno Halluan S Oliveira, Guarino R Colli, Laurie J Vitt, Daniel O Mesquita

引用次数: 0

Four-toed sengi (Petrodromus tetradactylus, Afrotheria, Mammalia) museomics reveals a crucial role of East African forests in macroscelidean diversification 四趾猿猴（Petrodromus tetradactylus，非洲猿类，哺乳纲）缪斯组学揭示了东非森林在大型蛛形纲动物多样化中的关键作用

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-07-17 DOI: 10.1093/zoolinnean/zlae081

Justus Hagemann, Luis Victoria Nogales, Michael Hofreiter, Patrick Arnold

{"title":"Four-toed sengi (Petrodromus tetradactylus, Afrotheria, Mammalia) museomics reveals a crucial role of East African forests in macroscelidean diversification","authors":"Justus Hagemann, Luis Victoria Nogales, Michael Hofreiter, Patrick Arnold","doi":"10.1093/zoolinnean/zlae081","DOIUrl":"https://doi.org/10.1093/zoolinnean/zlae081","url":null,"abstract":"Sengis (Macroscelidea) are members of the Afroinsectivora, a group of mammals belonging to the supercohort Afrotheria. Sengis’ low population densities and their distribution, which includes politically unstable regions with ongoing armed conflicts, hinder contemporary sampling of comprehensive datasets. We overcome this obstacle for the species Petrodromus tetradactylus, one of the most widely distributed sengi species, by utilizing 44 historical museum samples from multiple natural history museums. These historical samples were combined with newly generated or published data of 11 modern samples, thus creating a dataset of 55 P. tetradactylus individuals covering most of the species’ distribution. Phylogenetic reconstruction with 11 nuclear loci in conjunction with mostly complete mitochondrial genomes reveals multiple deeply divergent and formerly unknown lineages within this monotypic genus, highlighting the need for a taxonomic revision. Furthermore, we can show that the assumed allopatric distribution of P. tetradactylus in Central Africa most likely represents a sampling artifact. Biogeographic character mapping indicates that the African forest system and its dynamics through climate fluctuations shaped the evolutionary and biogeographic history of this taxon. We show that lineages within Petrodromus that were able to adapt to dryer woodland ecosystems are much more widely distributed than lineages restricted to moist forest systems. The evolution and radiation of the four-toed sengi (P. tetradactylus) mirrors the patterns of its distant relative, the giant sengis (Rhynchocyon) in both ecotype variation and overall distribution, implying a significant influence of climate and landscape features in shaping diversification.","PeriodicalId":49333,"journal":{"name":"Zoological Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141725939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The taxonomic status of Artemia monica (Crustacea: Anostraca) Artemia monica（甲壳纲：无尾目）的分类地位

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-07-16 DOI: 10.1093/zoolinnean/zlae088

Alireza Asem, Gonzalo Gajardo, D Christopher Rogers, Patrick Sorgeloos

{"title":"The taxonomic status of Artemia monica (Crustacea: Anostraca)","authors":"Alireza Asem, Gonzalo Gajardo, D Christopher Rogers, Patrick Sorgeloos","doi":"10.1093/zoolinnean/zlae088","DOIUrl":"https://doi.org/10.1093/zoolinnean/zlae088","url":null,"abstract":"Species are fundamental units of nature that need proper identification in order to assess and conserve biodiversity. Artemia is a model crustacean for population analysis and comparison in regionally endemic sexual species and parthenogenetic lineages distributed in hypersaline lakes, lagoons, and solar saltworks scattered in arid and semi-arid areas worldwide. The taxonomy of two American Artemia species has been controversial: Artemia monicaVerrill, 1869, adapted to the carbonate-rich conditions of Mono Lake (CA, USA), and Artemia franciscanaKellogg, 1906, a species broadly distributed in the Americas. The former species has been studied little, despite being listed as threatened in the IUCN Red List. In contrast, the latter has been studied extensively, is broadly distributed in the Americas, and has become established as a non-native invasive species in Europe, Asia, Africa, and Australia. Given the need to conserve A. monica, the intraspecific diversity of invasive A. franciscana, and the local species in areas invaded by this species, we reconsider their biodiversity and taxonomic status currently threatened by synonymization. In conclusion, A. monica and A. franciscana should be treated as two separate species that are isolated both ecologically and reproductively.","PeriodicalId":49333,"journal":{"name":"Zoological Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141631549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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

IF 2.8 2区生物学

Zoological Journal of the Linnean Society Pub Date : 2024-07-16 DOI: 10.1093/zoolinnean/zlae087

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":"https://doi.org/10.1093/zoolinnean/zlae087","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":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141631551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0