Cretaceous Research最新文献

Two new species of the extinct subfamily Alitrepaninae (Coleoptera: Bostrichidae) from the Upper Cretaceous (Cenomanian) Kachin amber in northern Myanmar

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-20 DOI: 10.1016/j.cretres.2024.106051

Huan Wang, Yuan Peng, Qianhui Lin, Ruiqing Tao, Zirui Zhang, Shuo Wang

引用次数: 0

A new palynological assemblage of the Nantun Formation in the Huhehu Sag, Hailar Basin, NE China: Implications for paleoenvironments

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-19 DOI: 10.1016/j.cretres.2024.106054

Yan Zhang , Yun-fei Xue , Chuan-biao Wan , Wen-chun Ge

{"title":"A new palynological assemblage of the Nantun Formation in the Huhehu Sag, Hailar Basin, NE China: Implications for paleoenvironments","authors":"Yan Zhang , Yun-fei Xue , Chuan-biao Wan , Wen-chun Ge","doi":"10.1016/j.cretres.2024.106054","DOIUrl":"10.1016/j.cretres.2024.106054","url":null,"abstract":"<div><div>The Cretaceous period, recognized as one of the warmest in Earth's geological timeline, is crucial for understanding paleoclimatic conditions. Palynological analyses, focusing on spores and pollen, play a vital role in reconstructing paleoenvironmental. This study emphasizes the relationship between climate and plant distribution through detailed palynological analyses. It reports the first discovery of abundant and diverse palynomorphs from the lower Nantun Fm in the Hailar Basin, Inner Mongolia, China. The identified palynological assemblage, termed the <em>Protoconiferus flavus</em>—<em>Pinuspollenites</em> sp.—<em>Quantouendinium</em> sp. (PPQ) assemblage, provides significant insights into the Early Cretaceous flora of northeastern China. The PPQ assemblage can be chronologically attributed to the Hauterivian–early Barremian interval, consistent with the LA–ICP–MS zircon U–Pb isotope ages of the Nantun Fm volcanic rocks. Paleovegetation reconstruction reveals a prevailing dominance of coniferous vegetation in the region represented by the PPQ assemblage, indicative of a characteristic of mid-to high-latitude mountain coniferous forest landscape. The climatic was mainly humid or semi-humid. This conclusion is supported by the abundance of freshwater dinocyst and green algae fossils, suggesting that sedimentation occurred in a shallow, freshwater hydrostatic environment with an estimated water temperature of approximately 20–25 °C. The environment was also nutrient-rich, which facilitated the proliferation of green algae such as <em>Scenedesmus</em>, <em>Pediastrum</em>, and <em>Tetraedron</em>. Identifying this assemblage is important for determining the age of the lower Nantun Fm, reconstructing paleovegetation and paleoclimate, and analyzing the lacustrine water conditions during the sedimentary period in the Hailar Basin.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106054"},"PeriodicalIF":1.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exceptional preservation in mayfly nymphs (Insecta: Ephemeroptera) from the Early Cretaceous of the Las Hoyas fossil site

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-19 DOI: 10.1016/j.cretres.2024.106052

Ángela D. Buscalioni , Raman Umamaheswaran , Alba Sánchez-García , Ana Isabel López-Archilla , Jaime Joaquim Dias , Ismar de Souza Carvalho , Candela Blanco-Moreno , Jesús Marugán-Lobón

{"title":"Exceptional preservation in mayfly nymphs (Insecta: Ephemeroptera) from the Early Cretaceous of the Las Hoyas fossil site","authors":"Ángela D. Buscalioni , Raman Umamaheswaran , Alba Sánchez-García , Ana Isabel López-Archilla , Jaime Joaquim Dias , Ismar de Souza Carvalho , Candela Blanco-Moreno , Jesús Marugán-Lobón","doi":"10.1016/j.cretres.2024.106052","DOIUrl":"10.1016/j.cretres.2024.106052","url":null,"abstract":"<div><div>The present study focuses on a group of macroinvertebrates that have played an important role in past and present lentic ecosystems: the Ephemeroptera. The study analyses the diversity, relative abundance, taphonomic alterations and fossilisation patterns of the Las Hoyas nymphs. The objective is to investigate the factors that may contribute to the presence of soft tissues in fossils with poor corporeal preservation. In accordance with this, only three morphotypes of the Leptophlebiidae family and one of the Euthyplociidae family have been characterised. However, the ultrastructural details of digestive and respiratory tissues have been documented, including the digestive canal, the shape of the gills, tracheoles, chloride cells, and importantly, in situ bacteria in cytokinetic stages located at the hindgut. The nymphs were fossilised in a variety of ways, including carbonaceous films, mineralised casts, and impressions. The nymphs that have been fossilised as composite moulds (Type III) and carbon films (Type II) tend to be larger in size. However, their bodies are rather well-preserved and show less soft tissue remains than those of the nymphs that have been preserved as impressions (Type I) and mineralised phosphorus casts (Type IV). These latter nymphs are smaller in size, and their bodies are poorly preserved. However, they show a greater variety of soft tissue details. This bias suggests an interesting link to environmental factors differentiating watered and flooding from microbial mat binding conditions.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106052"},"PeriodicalIF":1.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reassessment of an azhdarchid pterosaur specimen from the Mifune Group, Upper Cretaceous of Japan 重新评估日本上白垩世三船组的阿兹达克翼龙标本

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-16 DOI: 10.1016/j.cretres.2024.106046

Xuanyu Zhou , Naoki Ikegami , Rodrigo V. Pêgas , Toru Yoshinaga , Takahiro Sato , Toshifumi Mukunoki , Jun Otani , Yoshitsugu Kobayashi

{"title":"Reassessment of an azhdarchid pterosaur specimen from the Mifune Group, Upper Cretaceous of Japan","authors":"Xuanyu Zhou , Naoki Ikegami , Rodrigo V. Pêgas , Toru Yoshinaga , Takahiro Sato , Toshifumi Mukunoki , Jun Otani , Yoshitsugu Kobayashi","doi":"10.1016/j.cretres.2024.106046","DOIUrl":"10.1016/j.cretres.2024.106046","url":null,"abstract":"<div><div>The Japanese pterosaur record is relatively scarce and represented by a limited number of fragmentary specimens from Cretaceous deposits, including a partial cervical vertebra of an azhdarchid from the “Upper Formation” (Turonian-Coniacian) of the Mifune Group in Kumamoto Prefecture, on the island of Kyushu, Japan. Here, we redescribe this notable Japanese pterosaur specimen and test its phylogenetic position. We interpret it as a sixth cervical vertebra and identify diagnostic features that enable its recognition as a new taxon, <em>Nipponopterus mifunensis</em> gen. et sp. nov. It is noteworthy that this represents the first nominal species of pterosaur from Japan and that this new taxon shows numerous quetzalcoatline features, being strikingly similar to the unnamed Burkhant azhdarchid from the Turonian–Coniacian of Mongolia. Our phylogenetic analysis places <em>Nipponopterus</em> as a sister taxon to the Burkhant azhdarchid and nested within the clade of Quetzalcoatlinae.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106046"},"PeriodicalIF":1.9,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Palaeoenvironmental inferences of a Mexican Konservat-Lagerstätte (Tlayúa Quarry; Lower Cretaceous) based on the geochemistry of rare earth elements 基于稀土元素地球化学的墨西哥 Konservat-Lagerstätte（Tlayúa 采石场；下白垩统）古环境推论

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-15 DOI: 10.1016/j.cretres.2024.106045

E. Aldrin Juárez-Aguilar , Francisco Sánchez-Beristain , Juan Pablo Bernal , Ofelia Morton-Bermea , Pedro García-Barrera

{"title":"Palaeoenvironmental inferences of a Mexican Konservat-Lagerstätte (Tlayúa Quarry; Lower Cretaceous) based on the geochemistry of rare earth elements","authors":"E. Aldrin Juárez-Aguilar , Francisco Sánchez-Beristain , Juan Pablo Bernal , Ofelia Morton-Bermea , Pedro García-Barrera","doi":"10.1016/j.cretres.2024.106045","DOIUrl":"10.1016/j.cretres.2024.106045","url":null,"abstract":"<div><div>The Tlayúa Quarry is considered one of the most important Cretaceous outcrops in Mexico. Its well-preserved palaeobiota has allowed this outcrop to be considered a <em>Konservat-Lagerstätte</em>. Geochemical proxies such as major, minor and trace elements were evaluated from selected Zones of the Tlayúa Quarry, in order to infer some features of the depositional environment in which Tlayúa limestones originated. Aluminum, Thorium and Zirconium concentrations in addition to a low Phosphorous content evidence little terrigenous contamination, as well as a phosphate-free environment. Additionally, proxies such as Fe vs ΣREE, Mn vs ΣREE, Al vs ΣREE, Fe vs Nd<sub>SN</sub>/Yb<sub>SN</sub>, Al vs Nd<sub>SN</sub>/Yb<sub>SN</sub>, and Ce/Ce∗ vs Eu/Eu∗ show low correlation values (r<sup>2</sup> less than 0.25 in all cases with n = 128 and p < 0.05), thus suggesting a negligible influence of diagenetic effects or terrigenous contamination. These conditions are necessary for carrying out reliable palaeoenvironmental interpretations. Rare Earth Elements + Yttrium (REE+Y) concentrations were normalised to the Post-Archean Australian Shale standard to evaluate REE+Y patterns and anomalies. Following traits were identified: a slightly enrichment of heavy REE relative to light REE and moderate REE; positive La/La<sub>SN</sub>, Gd/Gd<sub>SN</sub> and Y/Y<sub>SN</sub> anomalies; negative/positive Ce/Ce<sub>SN</sub> anomalies; superchondritic and chondritic Y/Ho ratios. Here, we described that most of our limestone samples show the influence of marine waters and well oxidising conditions. However, freshwater signals that have been reported for some regions of the Tlayúa Quarry were also verified. Geochemical data are in agreement with the depositional environment evidenced by microfacies.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106045"},"PeriodicalIF":1.9,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selected regular echinoids (Echinoidea) from the upper Campanian–Maastrichtian along the western borders of the Northern Oman Mountains, with description of a new species 来自北阿曼山脉西部边界上元-马斯特里赫特统的部分常规棘皮动物（Echinoidea），并描述了一个新物种

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-09 DOI: 10.1016/j.cretres.2024.106037

Marouf Abdelaty Mohamed Abdelhamid , Osman Abdelghany , Mahmoud Abu Saima , Anhar Asan

{"title":"Selected regular echinoids (Echinoidea) from the upper Campanian–Maastrichtian along the western borders of the Northern Oman Mountains, with description of a new species","authors":"Marouf Abdelaty Mohamed Abdelhamid , Osman Abdelghany , Mahmoud Abu Saima , Anhar Asan","doi":"10.1016/j.cretres.2024.106037","DOIUrl":"10.1016/j.cretres.2024.106037","url":null,"abstract":"<div><div>Thirteen species of regular echinoid, in ten genera, are recorded from the upper Campanian–Maastrichtian Qahlah and Simsima formations of two sections located along the western borders of the Northern Oman Mountains. Twelve of these are from the Simsima Formation in the Jebel El Rawdah section, four from the Qahlah and Simsima formations in the Jebel Huwayyah section. One new species, <em>Hattopsis muradi</em>, is described from the Jebel El Rawdah section. The status of the genus <em>Pseudorthopsis</em> is confirmed; differences between it and <em>Orthopsis</em> are discussed and <em>Orthopsis sanfilippoi</em> is transferred to <em>Pseudorthopsis</em>, here being recorded for the first time from the Arabian Gulf region. Revision of three species referred to <em>Hattopsis</em> and nine species ascribed to <em>Protechinus</em> (=<em>Noetlingia</em>, <em>Noetlingaster</em>) has elucidated the relationship between these two genera and affirmed the distinctiveness of <em>Hattopsis</em>. <em>Hattopsis sphericus</em> and <em>Echinotiara perebaskinei</em> are recorded for the first time from Jebel Huwayyah. All species identified are compared with other related taxa, and their stratigraphical ranges, affinities, palaeobiogeography and palaeoecology discussed.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106037"},"PeriodicalIF":1.9,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First deciphering of large pterosaur footprints and their trackmaker in the Junggar Basin, China 首次破译中国准噶尔盆地大型翼龙足迹及其足迹制造者

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-08 DOI: 10.1016/j.cretres.2024.106036

Yang Li , Xiaolin Wang , Shunxing Jiang , Junyi Song

{"title":"First deciphering of large pterosaur footprints and their trackmaker in the Junggar Basin, China","authors":"Yang Li , Xiaolin Wang , Shunxing Jiang , Junyi Song","doi":"10.1016/j.cretres.2024.106036","DOIUrl":"10.1016/j.cretres.2024.106036","url":null,"abstract":"<div><div>Pterosaur footprints are important trace fossils for understanding the ecological habits of pterosaurs, and they are extremely rare worldwide. Within the Lower Cretaceous of the Junggar Basin of Xinjiang, hundreds of large pterosaur footprints have been unearthed. These imprints underwent a meticulous examination encompassing their dimensions, length-to-width ratio, proportions of digital and metatarsal parts, and divarication between digits of the manus imprints. A new ichnospecies, <em>Pteraichnus junggarensis</em> isp. nov., has been proposed based on these detailed analyses. By comparing these footprints with the anatomical characteristics of local larger pterosaur pedal bone fossils, it is suggested that the large-sized <em>P. junggarensis</em> footprints were produced by <em>Dsungaripterus weii</em>. The successful correlation between pterosaur fossils and their footprints within the Wuerho Pterosaur Fauna marks a momentous stride in deducing trackmakers based on their footprints. Moreover, estimates of pterosaur pes length and hip height were, for the first time, derived from a comprehensive scrutiny of 54 non-pterodactyloid and pterodactyloid specimens. A salient discovery was the markedly reduced ratio of hip height to pes length in non-pterodactyloid pterosaurs in comparison to their pterodactyloid counterparts. By employing fitted linear equations grounded on footprint dimensions, it is posited that the hip height for <em>Noripterus complicidens</em> ranges from 0.10 to 0.20 m, while for <em>D. weii</em>, it ranges from 0.28 to 0.46 m. Additionally, based on the ratio of stride length to hip height in the trackways, it is inferred that the trackmakers exhibited a typical walking gait, with speeds of 0.33 and 0.25 m/s, respectively.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106036"},"PeriodicalIF":1.9,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ichnotaxonomic and morphological differentiation in pterosaur tracks using Geometric Morphometric analysis: A case study on Pteraichnus manus tracks from Cretaceous East Asia 利用几何形态计量分析对翼龙足迹进行分类和形态分化：白垩纪东亚翼龙足迹案例研究

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-08 DOI: 10.1016/j.cretres.2024.106033

Jongyun Jung , Hyemin Jo , Minguk Kim , Min Huh

{"title":"Ichnotaxonomic and morphological differentiation in pterosaur tracks using Geometric Morphometric analysis: A case study on Pteraichnus manus tracks from Cretaceous East Asia","authors":"Jongyun Jung , Hyemin Jo , Minguk Kim , Min Huh","doi":"10.1016/j.cretres.2024.106033","DOIUrl":"10.1016/j.cretres.2024.106033","url":null,"abstract":"<div><div><em>Pteraichnus</em> is the most reported pterosaur ichnotaxa and the taxon with the largest number of reported ichnospecies. However, most ichnospecies of <em>Pteraichnus</em> are restricted to the type locality and type specimens and have not been expanded. This study employs two-dimensional landmark-based Geometric Morphometric analyses (GMA) to investigate the manus tracks of four ichnotaxa of <em>Pteraichnus</em> (<em>P. koreanensis, P. nipponensis, P. wuerhoensis</em>, and <em>P. gracilis</em>) from the Early Cretaceous of East Asia. These analyses are the first attempt to perform GMA on pterosaur ichnofossil and reveal that the morphological characteristics of these ichnotaxa are significantly distinguishable. In addition to traditional descriptive criteria, features such as the width of the digits and the metacarpal-phalangeal joint area were identified as valid criteria for numerical comparison. The results suggest that GMA can enhance the ichnotaxonomic classification of invalid or questionable ichnotaxa and provide taxonomic estimation for manus-only tracks. This approach highlights the potential for spatiotemporal comparisons between disparate pterosaur footprints. The distinct morphological features observed in tracks from relatively close localities suggest the presence of diverse pterosaur faunas across East Asia. Further research with an expanded dataset of pterosaurian ichnotaxa is recommended to refine ichnotaxonomic classifications and enhance our knowledge of pterosaur paleogeography.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106033"},"PeriodicalIF":1.9,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Persistence of a shallow-marine environment in the western Kunlun area (northwestern Tibet) until the early Maastrichtian: Evidence from radiolitid rudist bivalves 昆仑西部地区（西藏西北部）浅海环境一直持续到马斯特里赫特早期：来自放射虫类原生双壳类的证据

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-08 DOI: 10.1016/j.cretres.2024.106035

Bintao Gao , Qinghai Zhang , Xin Rao , Lin Ding

{"title":"Persistence of a shallow-marine environment in the western Kunlun area (northwestern Tibet) until the early Maastrichtian: Evidence from radiolitid rudist bivalves","authors":"Bintao Gao , Qinghai Zhang , Xin Rao , Lin Ding","doi":"10.1016/j.cretres.2024.106035","DOIUrl":"10.1016/j.cretres.2024.106035","url":null,"abstract":"<div><div>The closing of the Tethys Ocean during the Mesozoic and Cenozoic dramatically affected the palaeogeography, palaeoenvironment and biotic evolution of the Tibetan Plateau and surrounding areas. The timing of closure of the Tethys Ocean in different areas is recorded by the youngest marine deposits. In the western Kunlun area of northwestern Tibet, the Tielongtan Group represents the youngest marine deposits, and is rich in rudist bivalves; however, its depositional age, particularly the age of final deposition, is poorly constrained. Systematic and palaeobiogeographic analyses were conducted on rudists from the Tielongtan Group in the eastern Loqzung Mountains. Four genera and two species were identified: <em>Biradiolites boldjuanensis</em>, <em>Gorjanovicia acuticostata</em>, <em>Durania</em> sp. and <em>Radiolites</em> sp. The occurrence of the lower Maastrichtian index fossil, <em>Biradiolites boldjuanensis</em>, indicates that deposition of the Tielongtan Group continued until the early Maastrichtian. Therefore, the results of this and previous studies indicate that deposition of the Tielongtan Group spanned from at least the Turonian to the early Maastrichtian. Palaeobiogeographical analyses show that <em>B</em>. <em>boldjuanensis</em> was endemic in Central Asia, whereas <em>G</em>. <em>acuticostata</em> might have extended beyond the Mediterranean region. During the Late Cretaceous, the shallow ocean in the western Kunlun area contained both cosmopolitan and endemic rudists.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106035"},"PeriodicalIF":1.9,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A beetle-like minute litter bug trapped in 99 million-year-old Kachin amber (Hemiptera, Dipsocoromorpha, Schizopteridae) 被困在距今 9,900 万年前的克钦琥珀中的甲虫状微小垃圾虫（半翅目，二角目，裂翅虫科）

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-11-07 DOI: 10.1016/j.cretres.2024.106034

Jun Chen , De Zhuo , Guangying Ren , Fei Yang , Baizheng An

{"title":"A beetle-like minute litter bug trapped in 99 million-year-old Kachin amber (Hemiptera, Dipsocoromorpha, Schizopteridae)","authors":"Jun Chen , De Zhuo , Guangying Ren , Fei Yang , Baizheng An","doi":"10.1016/j.cretres.2024.106034","DOIUrl":"10.1016/j.cretres.2024.106034","url":null,"abstract":"<div><div>Minute litter bugs (Dipsocoromorpha) constitute one of the most ancient and specialized lineages of Heteroptera. This infraorder displays an array of deviant body structures, such as dramatically varying tarsal formula, asymmetrical male abdominal terminal segments, and beetle-like appearance with elytriform tegmina. Most these unusual morphological traits have been reported in early dipsocoromorphans, except the stunning coleopteroid wings. Herein, a new minute litter bug, <em>Qiaoia menghaoae</em> Chen and Zhuo, gen. et sp. nov. is described from middle Cretaceous Kachin amber, northern Myanmar, representing the first beetle-like dipsocoromorphan in the Mesozoic. The new genus and species is characterized by three pairs of extremely strong spine-like trichobothria on vertex and pronotum, thoracic legs densely covered with tiny setae and long spines, hemelytra generally dark-stained and with a narrow bright transverse stripe in middle. Our new find further confirms that the grotesque morphological characteristics displayed in modern minute litter bugs have evolved and likely prevalent in their Cretaceous ancestors. Additionally, morphological analyses suggest some Mesozoic dipsocoromorphans including <em>Qiaoia menghaoae</em> Chen and Zhuo, gen. et sp. nov. probably lived in relatively open areas like arboreal habitats and were more mobile and active than their recent descendants, which are commonly with cryptic life style.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106034"},"PeriodicalIF":1.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0