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1.
Two new species of wasps belonging to the family Ephialtitidae,Praeproapocritusflexus sp.nov.and Proapocritus parallelus sp.nov.,from the Middle Jurassic Jiulongshan Formation of southeastern Inner Mongolia,China,are described and illustrated.Praeproapocritus vulgates Rasnitsyn ＆ Zhang,2010 and six species of Proapocritus,P.densipediculus,P.sculptus,P.longantennatus,P.formosus,P.atropus,and P.elegans,all described by Rasnitsyn and Zhang in 2010,are first record from the Middle Jurassic of China.These two new findings supplement the morphological understanding of ephialtitids in the Middle Jurassic of China and broaden the diversity of ephialtitids in their by-gone ecosystems. 相似文献
2.
<正>One new genus and five new species of the family Evaniidae are described from the Early Cretaceous (Albian)Spanish amber of Penacerrada-Ⅰ(Province of Burgos),San Just and Arroyo de la Pascueta(both in the Province of Teruel):Cretevania alonsoi sp.nov.,C.montoyai sp.nov.,C.alcalai sp.nov.,C.rubusensis sp.nov.,and Iberoevania roblesi gen.and sp.nov.Taxonomic changes include Cretevania pristina(Zhang and Zhang,2000) comb.nov.,C.exquisita(Zhang,Rasmtsyn,Wang and Zhang,2007)comb.nov.,C.vesca(Zhang,Rasnitsyn,Wang and Zhang,2007)comb.nov.,and C.cyrtocerca(Deans,2004)comb.nov.,as a result of the reinterpretation of the genera Procretevania and Eovernevania.The new well preserved specimens of the genus Cretevania,together with the characters shown by the type specimens of the synonymized genera,give new information about their anatomical characters of taxonomical importance,and the genus Cretevania Rasnitsyn,1975 is re-diagnosed.The holotypes of the Russian species in amber have been revised.A cladistic analysis of fossil and extant groups of the superfamily Evanioidea is included.Cretevania had a wide palaeogeographic distribution,with the highest diversity known from Spain.The 13 known Cretevania species show a high interspecific variation mainly in wing characteristics,and a wide range of body and wing size. 相似文献
3.
Thirteen new species referable to four genera, of which one is new, from the Cretaceous of Russia and Mongolia are established herein and assigned to the family Pelecinidae. Among the four genera, Protopelecinus gen. nov., including four new species, is referred to the subfamily Pelecininae, while Iscopinus Kozlov, including three new species, Eopelecinus Zhang, Rasnitsyn and Zhang, including five new species, and Scorpiopelecinus laetus sp. nov. are assigned to the subfamily Iscopininae. Of these new taxa, eight, namely Protopelecinus regularis, P. furtivus, Iscopinus simplex, ?I. suspectus, Eopelecinus exquisitus, E. scorpioideus, E. rudis and Scorpiopelecinus laetus, are from the Lower Cretaceous Zaza Formation of Baissa, Transbaikalia, Russia; two, E. minutus and E. fragilis, are from the basal Lower Cretaceous Tsagan-Tsab Formation of Khutel-Khara, Mongolia; two, P. dubius and P. deformis, are from the Lower Cretaceous (Aptian?) of Bon Tsagan, Mongolia; and one, I. separatus, is from the Upper Cretaceous (Cenomanian) Ola Formation of Obeshchayushchiy, Russia. A key to fossil pelecinid wasps is provided and a morphological analysis shows that the Pelecinidae might be paraphyletic with respect to the Proctotrupidae. The Chinese insect fauna from both the Yixian and Laiyang formations is dominated by Eopelecinus and Sinopelecinus whereas the Siberian + Mongolian fauna from the Zaza and Tsagan-Tsab formations is dominated by Eopelecinus and Iscopinus. Hence, Eopelecinus is common to both. The differences between the two faunas are likely to be the result of geographical variation in populations. 相似文献
4.
A new species of wasp from the Laiyang Formation in Shandong, China is described and named Cretaproscolia asiatica sp. nov. It is the second record of the genus Cretaproscolia Rasnitsyn and Martínez-Delclòs, 1999, and extends the distribution of the genus from the Lower Cretaceous of South America into the upper Mesozoic of East Asia. The diagnosis of Cretaproscolia is emended based on the new material. 相似文献
5.
New fossil genus with a new species, Stellularis longirostris Chen, Yao and Ren, gen. et sp. nov., from the family Procercopidae, are described. New specimens were collected from the Lower Cretaceous non-marine sedimentary strata from the Yixian Formations of northeast China. The exceptionally well-preserved materials reveal fine details of the body structure and morphology including rostrum, legs, abdomen, anteclypeus and ovipositor. The genera Luanpingia Hong, 1983 and Cathaycixius Ren, Lu, and Guo, 1995 are discussed. 相似文献
6.
A new genus with a new species, Sinohelorus elegans gen. et sp. nov., is described and assigned to the subfamily Mesohelorinae, Heloridae. In addition, two new species, Gurvanhelorus beipiaoensis sp. nov. and Spherogaster saltatrix sp. nov., are also described. The diagnoses of Gurvanhelorus Rasnitsyn, 1986 and Spherogaster Zhang and Zhang, 2001 are emended based on new materials and findings. These well-preserved specimens were collected from the Jehol Biota, Early Cretaceous Yixian Formation of Huangbanjigou Village in Liaoning, China. These new species broaden the diversity of this family and enhance our understanding of evolutionary trend of helorid’s metasomal structure, antenna, and forewing venation from the Middle Jurassic to extant. 相似文献
7.
Three well-preserved fossil Pelecinids from the Late Mesozoic Yixian Formation, Liaoning Province, China are described and assigned to two new species, Eopelecinus huangi sp. nov. and Eopelecinus tumidus sp. nov. in Eopelecinus Zhang, Rasnitsyn and Zhang, 2002. As of now, 17 species have been included in this genus, which is the most diverse in the Pelecinidae family. With new information and characters obtained from these new specimens, the diagnosis of Eopelecinus Zhang, Rasnitsyn and Zhang, 2002 is emended. 相似文献
8.
The diversity of serphitid wasps (Proctotrupomorpha: Serphitoidea) in Early Cretaceous (Albian) amber from Spain is described. Four new species have been found representing the genera Serphites Brues 1937, Aposerphites Kozlov and Rasnitsyn 1979, and Microserphites Kozlov and Rasnitsyn 1979. From the Peñacerrada I (Moraza) outcrop two species are described as Aposerphites angustus Ortega-Blanco, Delclòs, Peñalver and Engel, new species and Serphites lamiak, new species. A single species was found at the San Just (Teruel) outcrop and is described as S. silban, new species. Another single specimen was found in El Soplao (Cantabria) outcrop, described as Microserphites soplaensis, new species. This last specimen is especially interesting in sharing typical serphitid and mymarommatoid characters, giving additional support to the apparent close relationship of both groups. 相似文献
9.
瓮安生物群中海绵化石的新证据 总被引：5，自引：0，他引：5
近年来笔者依据现存的瓮安生物群中一些海绵及动物胚胎化石标本的研究，对那些可能的球形海绵体及有争议的海绵幼虫标本进行了简略的评述。本文提供的保存完好的具单轴骨针的球形海绵体化石及可能的海绵幼虫标本，对于陡山沱期出现海绵动物的推测提出了新的证据。 相似文献
10.
Current Knowledge of Mesozoic Coleoptera from Daohugou and Liaoning (Northeast China) 总被引：4，自引：1，他引：3
Alexander G. KIREJTSHUK Alexander G. PONOMARENKO Alexander A. PROKIN CHANG Huali Georgy V. NIKOLAJEV and REN Dong 《《地质学报》英文版》2010,84(4):783-792
<正>The present paper is devoted to an overview on fossil Coleoptera studied from Inner Mongolia, Daohugou(Middle Jurassic,Jiulongshan Formation)and Liaoning(Upper Jurassic-Lower Cretaceous,Yixian Formation)deposited in Chinese collections.As a result,species of the tribe Sperchopsini and Hydrophilini from Hydrophilidae,families and subfamilies Silphidae,Syndesinae from Lucanidae,Pleocomidae,Trogidae, Trogissitidae,Pyrochroidae,Diaperinae from Tenebrionidae,and Cerambycidae were first registered in the Mesozoic and some families were defined as new.It was shown that many superfamilies represented in the Recent Fauna were formed within the Middle Jurassic and Lower Cretaceous.The materials examined confirm the hypothesis that Cucujiformian beetles are a younger group than other infraordera of Polyphaga(Staphyliniformia and Elateriformia)and,therefore,they appeared in the fossil record only in the late Mesozoic.It was shown and confirmed that most superfamilies appeared in the fossil records before Cucujoidea.The synonymy of Notocupes Ponomarenko,1964;Sinocupes Lin,1976,syn.nov.;Amblomma Tan,Ren et Liu 2005,syn.nov.;Euryomma Tan, Ren et Shih,2006,syn.nov.,non Stein,1899 and Ovatocupes Tan et Ren,2006,syn.nov.;synonymy of Tetraphalerus Waterhouse,1901 and Odontomma Tan,Ren et Ge 2006,syn.nov.;and synonymy of Priacmopsis Ponomarenko,1966 and Latocupes Tan et Ren,2006,syn.nov.are proposed.Sinorhombocoleus papposus Tan et Ren,2009 is transferred from the family Rhombocoleidae to Schizophoridae.Cervicatinius complanus Tan,Ren et Shih,2007 and Forticatinius elegans Tan,Ren et Shih,2007 are transferred from the family Catiniidae(suborder Archostemata)to superfamily Cleroidea(suborder Polyphaga:first among the family Peltidae and second as a closely related group to the latter family).The family Parandrexidae is transferred from the superfamily Cucujoidea to Cleroidea.The ecological circumstances of the past ecosystems and hypotheses of historical development of the order Coleoptera are discussed.The age of faunas examined is considered.The list of the taxa described from Daohugou and Liaoning is compiled. 相似文献
11.
Tong Bao Xuesong Zhang Katarzyna S. Walczyńska Bo Wang Jes Rust 《Proceedings of the Geologists' Association. Geologists' Association》2019,130(2):247-256
Within this study the subfamily Praemordellinae is reviewed and the holotype of Praemordella martynovi Scegoleva-Barovskaja, 1929 is re-described. The genera Cretanaspis Huang and Yang, 1999, Mirimordella Liu et al., 2007, Bellimordella Liu et al., 2008 and Wuhua Wang and Zhang, 2011 is attributed to Praemordellinae. One new species, Wuhua peregrina sp. nov., is erected based on two well-preserved specimens from the Middle Jurassic Daohugou Biota (Inner Mongolia, China). The morphological characters of Praemordellinae are given and a key to genera of Praemordellinae is presented. Praemordellinae is closely related to extant Mordellidae in having humpbacked body, strongly deflexed head, filiform antennae and pectinate tarsal claws, but it is differing in that the pygidium absent and hind femora not well developed. It is also similar to Ripiphoridae in having a convex body and simple tarsi, but differs Ripiphoridae in having filiform antennae. Praemordellinae is probably a stem group including the ancestor of Mordellidae and Ripiphoridae. Also, within this paper, the fossil record of Mordellidae is summarized. 相似文献
12.
Three new species of the extinct genus of Eoptychopterina from the Eoptychopteridae 相似文献
13.
以陕南粉质黏土地区某住宅楼施工现场为试验场地,开展了灌注桩和载体桩复合地基的现场静载试验,结合经验法理论计算,从承载力和建设成本两个方面,对比分析了两种地基基础方案的优劣。结果显示:灌注桩和载体桩复合地基荷载-沉降曲线均为缓变型,两种方案均能提供较高的抗压承载力;当载体桩桩长超过10 m,且作为复合地基增强体时,经验法计算过程未考虑桩端阻力的扩大头效益,计算结果明显低于现场试验结果;在相同桩身用料投入条件下,载体桩复合地基较灌注桩能够提供更高承载力。在陕南的类似粉质黏土地区,建议优先考虑选用载体桩复合地基方案。 相似文献
14.
Qianqi Zhang Jacek Szwedo Daran Zheng Bo Wang Haichun Zhang 《Proceedings of the Geologists' Association. Geologists' Association》2021,132(2):199-206
A planthopper originally assigned to the genus Boreocixius in Surijokocixiidae (Surijokocixioidea, Fulgoromorpha) from the Ladinian (Middle Triassic) of Tongchuan in Shaanxi, northwestern China is described as Boreocixius tongchuanensis Zhang et al. sp. nov. As the third species ascribed to the genus, it differs from its congeners in having the much larger tegmen with postnodal veinlets and pigmented bands, providing new morphological information for Boreocixius. The establishment of the new species further increases the diversity of Boreocixius and Surijokocixiidae as well. 相似文献
15.
Early Evolution of Apocrita(Insecta,Hymenoptera)as Indicated by New Findings in the Middle Jurassic of Daohugou,Northeast China 总被引：2，自引：1，他引：1
<正>The classification and phytogeny of the basal Vespina(=Orussoidea+Apocrita)are reconsidered based primarily on rich and well preserved material from the Middle Jurassic of Daohugou in Inner Mongolia,China. Comparatively smooth morphological transitions are traced from a Xiphydriidae-like ancestor toward Orussoidea via the Jurassic family Karatavitidae,and through Karatavitidae and the Jurassic and Early Cretaceous family Ephialtitidae independently to Stephanidae,to Evanioidea,and,via the extinct Jurassic Kuafuidae fam.nov.to the remaining Apocrita.New hypothesis is proposed concerning development of the characteristic wasp-waist of Apocrita,which is supposed to appear independently and in different ways in Evanioidea and in the rest of Apocrita.As a result,six infraorders are proposed for the suborder Vespina with the following taxonomic structure:infraorder Orussomorpha including the only superfamily Orussoidea(Karatavitidae+Paroryssidae + Orussidae),infraorder Stephanomorpha with the only superfamily Stephanoidea(Ephialtitidae+Stephanidae), infraorder Evaniomorpha with the only superfamily Evanioidea of traditional composition,infraorder Ceraphronomorpha with the superfamilies Ceraphronoidea s.str.and monotypical Megalyroidea and Trigonaloidea,and the infraorders Proctotrupomorpha,Ichneumonomorpha,and Vespomorpha of traditional composition.The family Kuafuidae is unplaced to infraorder because it is putatively paraphyletic with respect to Ceraphronomorpha,Proctotrupomorpha,Ichneumonomorpha and Vespomorpha.Described as new are Karatavites junfengi sp.nov,Praeratavites wuhuaensis sp.nov.,P.perspicuus sp.nov.,Postxiphydria daohugouensis gen.et sp.nov.,P.ningchengensis gen.et sp.nov.,Postxiphydroides strenuus gen.et sp.nov.,Praeratavitoides amabilis gen.et sp.nov.,Proapocrtius densipediculus sp.nov.,P.sculptus sp.nov.,P.longantennatus sp.nov., P.formosus sp.nov.,P.atropus sp.nov.,P.elegans sp.nov.,Stephanogaster pristinus sp.nov.,Asiephialtites lini sp. nov.,Praeproapocritus vulgatus gen.et sp.nov.,Sinaulacogastrinus solidus gen.et sp.nov.,Sinevania speciosa gen. et sp.nov.,Eonevania robusta gen.et sp.nov.,Kuafua polyneura gen.et sp.nov.(all from the Middle Jurassic of Daohugou),as well as Kuafuidae fam.nov.including Kuafua gen.nov.as well as Arthrogaster Rasnitsyn,1975,and Leptogastrella Rasnitsyn,1975 from the Upper Jurassic of Karatau in Kazakhstan. 相似文献
16.
A. Paone 《Mineralogy and Petrology》2006,87(1-2):53-80
Summary This work integrates new geochemical data with the numerous published analyses on rocks from the Mt. Somma-Vesuvius volcano.
New quantitative models for the evolution of magma source regions and magma at different depths are proposed. The origin of
the Somma-Vesuvius parental magma is modeled as 0.05–0.1 melt fractions of a MORB-type source composed of 54% olivine, 30%
orthopyroxene, 10% clinopyroxene, 1% garnet, and 4% amphibole, and 1–5% sediment introduced through the adjacent arc system.
The excess concentrations of Rb, Ba, K, and Sr are attributed to a subduction-related fluid phase. Major and trace element
concentrations, coupled with Sr–Nd–Pb isotope signatures suggest that the bulk composition of sediments being subducted below
southern Italy is similar to that of the carbonate rich sediment columns described by Plank and Langmuir (1998) and Vroon et al. (1995). Furthermore, it appears that the sediment contribution was introduced as a partial melt, which would account
for some geochemical patterns, such as 143Nd/144Nd versus Th/Ce. The EC–AFC model (Spera and Bohrson, 2001) is then used to track the evolution of Somma-Vesuvius magmas. The results are consistent with the melting of crustal
Hercynian basement at depths of 12 and >20 km (De Natale et al., 2001). Such a model is also consistent with the thermal model of Annen and Sparks (2002) for the evolution of magmatic provinces. Here, magmas from the upper mantle form a melt intrusion and storage zone
at 12 to >20 km allowing for crustal melting to take place. At Vesuvius, Plinian eruptions involve the first magma withdrawn
from a deep magma reservoir. Interplinian eruptions involve reduced volumes of magma stored over a larger depth range until
the volcanic activity stops. This suggests that little magma is left in the melt intrusion and storage zone. A new cycle is
started by a Plinian event when new magma rises from the upper mantle and is emplaced in the lower crust. 相似文献
17.
Fabio Bellatreccia Giancarlo Della Ventura Luisa Ottolini Eugen Libowitzky Anton Beran 《Physics and Chemistry of Minerals》2005,32(1):65-76
A well-characterized suite of vesuvianite samples from the volcanic ejecta (skarn or syenites) from Latium (Italy) was studied by single-crystal, polarized radiation, Fourier-transform infrared (FTIR) spectroscopy and secondary-ion mass-spectrometry (SIMS). OH-stretching FTIR spectra consist of a rather well-defined triplet of broad bands at higher-frequency (3,700–3,300 cm–1) and a very broad composite absorption below 3,300 cm–1. Measurements with E//c or Ec show that all bands are strongly polarized with maximum absorption for E//c. They are in agreement with previous band assignments (Groat et al. Can Mineral 33:609, 1995) to the two O(11)–H(1) and O(10)–H(2) groups in the structure. Pleochroic measurements with changing direction of the E vector of the incident radiation show that the orientation of the O(11)–H(1) dipole is OHc~35°, in excellent agreement with the neutron data of Lager et al. (Can Mineral 37:763, 1999). A SIMS-based calibration curve at ~10% rel. accuracy has been worked out and used as reference for the quantitative analysis of H2O in vesuvianite by FTIR. Based on previous SIMS results for silicate minerals (Ottolini and Hawthorne in J Anal At Spectrom 16:1266, 2001; Ottolini et al. in Am Mineral 87:1477, 2002) the SiO2 and FeO content of the matrix were assumed as the major factors to be considered at a first approximation in the selection of the standards for H. The lack of vesuvianite standards for quantitative SIMS analysis of H2O has been here overcome by selecting low-silica elbaite crystals (Ottolini et al. in Am Mineral 87:1477, 2002). The resulting integrated molar absorption FTIR coefficient for vesuvianite is i=100.000±2.000 l mol–1 cm–2. SIMS data for Li, B, F, Sr, Y, Be, Ba REE, U and Th are also provided in the paper. 相似文献
18.
With the decrease of gloal temperature,glacial epoch came over the earth and global climate fluctuated over a great range since the beginning of Quatenary .Paleoclimotologists of various countries have focussed attention to the periodic characteristics and dynamics of climation flucturation in the past many years(Berger,1977;Imbrie and Hays,1984:ding zhongli et al.,1990;Yu zhiwei et al.,1992:Liu Youmei et al.,1996),Although some of the workers have paid their attention to the nonlinear characteristics of the global Quaternary environmental evolution(Nicolis and Nicolis,1984,Lu Houyuan et al.,1993)_,it is worth while to do this kind of work in some special areas in the world,for example the Qinghai-Tibet Plateau.Using R/S analysis,the authors calculated the Hurst indexes H of some geochemical proxies,including organic carbon,FeO,Fe2O3 and FeO/Fe2O3,from the Tianshuihai Lake core in West Kunlun Mountain of the Qinghai-Tibet Plateau,The proxies satisfy the Hurst law with Honrg.carbon=0.735,HFe2O3=0.757,HFeO=0.848and HFeO/Fe2O3=0./646,All the indexs are greater than 0.5,meaning that from 240 to 15ka B.P.,there were some long-run dependencies-persistence in the climatic and environmental evolution around the Tianshuihai Lake area.This is in accordance with the climate there from 240 to 15ka B.P.(Yu Suhua et al.,1996),The paleo-climate and paleo-environment evolution around the Tianshuihai Lake area is of persistence as well as of fluctuation and is a combination of these two components,There are some differences between the four Hurst indexes,Which Probably resulted from the differnet intensitites of Persistence of the four proxies,organic carbon.FeO,Fe2O3 and FeO/Fe2O3,or from the change of drainage system around the Tianshuihai Lake area from opemness to closeness(Li Bingyuan et al.,1991;Sun Honglie,1996:Shi Yafeng et al.1998_).The Qinghai-Tibet plateau was the starter and sensor of the climatic and environmental variation of the surrounding areas(Yao Tandong et al.,1991;Feng Song et al., 1998) and some other scientists even regarded it as the driver and amplifier of global climatic variations (Pan Baotian and Li Jijun,1996).The persistence in which the climate and environment around the Tianshuihai Lake area evolved from 240 to 15ka B.P.is probably a function of the continuous uplift of the palteau in the same period of time. 相似文献
19.
《Proceedings of the Geologists' Association. Geologists' Association》2021,132(5):597-604
Christophus myanmarensis gen. et sp. nov., Christophus ohmkuhnlei gen. et sp. nov., and Mintara parva gen. et sp. nov., three new species and two new genera of belytine wasps (Diapriidae: Belytinae) are described and figured from males preserved in mid-Cretaceous Kachin (Burmese) amber. These new fossils enrich the fossil record of Cretaceous diapriids, summarized here, demonstrating the diversity of the family before the K/Pg extinction and suggesting an older origin for the family. 相似文献
20.