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新疆拜城阿合组、阳霞组及克孜勒努尔组的孢粉组合 总被引：6，自引：0，他引：6
拜城地区中生代陆相地层非常发育.作者在阿合组、阳霞组和克孜勒努尔组中获得了不少的孢粉化石,共鉴定有58属,93种,其中2新种和2新联合种. 相似文献
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本文以表格的形式列举了经国际矿物学协会(IMA)新矿物与矿物命名委员会(CNMNC)批准、并于2007年度正式发表的新矿物共25种。其中硅酸盐7种,磷酸盐2种,硒酸盐1种,硫酸盐2种,碳酸盐2种,钨酸盐1种,硼酸盐2种,砷化物1种,硫盐5种,氢氧化物2种。文中表格依次列出了矿物的中外文名称及化学式、晶系及晶胞参数、主要粉晶数据、物理性质、光学性质、产状及共生(伴生)组合等。 相似文献
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描述的菊石标采自江西安福乐平系，计有2新属，2新种和1个未定种。根据这些资料对晚二叠世早期华南海域的生态环境作了初步探讨。 相似文献
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新矿物（2005.1～2005.12） 总被引：1，自引：1，他引：0
本文以表格的形式列举了经国际矿物学协会(IMA)新矿物与矿物命名委员会(CNMMN)批准、并于2005年度正式发表的新矿物共43种.其中硅酸盐有14种,磷酸盐5种,砷酸盐2种,硫酸盐2种,亚硒酸盐1种,碳酸盐1种,硫化物2种,硫盐5种,硒化物1种,硒锑化物1种,锑化物2种,氧化物和氢氧化物5种,复杂卤化物2种.文中表格依次列出了矿物名称及化学式、晶系及晶胞参数、主要粉晶数据、物理性质、光学性质、产状及共生(伴生)组合等. 相似文献
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本文以表格的形式列举了经国际矿物学协会(IMA)新矿物与矿物命名委员会(CNMMN)批准、并于2006年度正式发表的新矿物共17种.其中硅酸盐8种,磷酸盐2种,砷酸盐2种,碳酸盐有1种,硫盐2种,硅化物1种,氯化物1种.文中表格依次列出了矿物的中外文名称及化学式、晶系及晶胞参数、主要粉晶数据、物理性质、光学性质、产状及共生(伴生)组合等. 相似文献
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本文以表格的形式列举了经国际矿物学协会(IMA)新矿物与矿物命名委员会(CNMMN)批准、并于2003年度正式发表的新矿物共55种,其中硅酸盐31种,磷酸盐5种,砷酸盐2种,硫酸盐4种,硫化物3种,碳酸盐2种,钒酸盐2种,硼酸盐1种,硒化物1种,硫盐1种,氧化物1种,氢氧化物1种,复杂卤化物1种.文中表格依次列出了矿物的中外文名称及化学式、晶系及晶胞参数、主要粉晶数据、物理性质、光学性质、产状及共生(伴生)组合等. 相似文献
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本文以表格的形式列举了经国际矿物学协会(IMA)新矿物与矿物命名委员会(CNMMN)批准、并于2004年度正式发表的新矿物共45种.其中硅酸盐19种,磷酸盐4种,砷酸盐4种,硼酸盐3种,钒酸盐2种,锗酸盐1种,碲酸盐1种,硒酸盐1种,硫化物2种,硫盐2种,锑碲化物1种,硅化物1种,氧化物和氢氧化物3种,复杂卤化物1种.文中表格依次列出了矿物名称及化学式、晶系及晶胞参数、主要粉晶数据、物理性质、光学性质、产状及共生(伴生)组合等. 相似文献
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本文以表格的形式列举了经国际矿物学协会（IMA）新矿物与矿物命名委员会（CNMMN）批准、并于2004年度正式发表的新矿物共45种。其中硅酸盐19种,磷酸盐4种,砷酸盐4种,硼酸盐3种,钒酸盐2种,锗酸盐1种,碲酸盐1种,硒酸盐1种,硫化物2种,硫盐2种,锑碲化物1种,硅化物1种,氧化物和氢氧化物3种,复杂卤化物1种。文中表格依次列出了矿物名称及化学式、晶系及晶胞参数、主要粉晶数据、物理性质、光学性质、产状及共生（伴生）组合等。 相似文献
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Novelaria, a new genus of rhagionid of late Albian age with three new species, is the first record of this family from Charentes amber (southwestern France). The new genus is probably closely related to the recent genus Chrysopilus. However its relationship with the other fossils in amber is discussed. A key for separation of the new species is provided and the diversity of the family during the Cretaceous is also briefly discussed. 相似文献
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描述的菊石产自江西宜春、安福两地,计有1新科、5新属、8新种和一个未定种。根据花桥菊石科(新科)和宜春菊石属(新属),阐述了菊石的演化,并对国际地层对比作了探讨。 相似文献
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Eighteen echinoid species (seven regular and eleven irregular) belonging to twelve genera have been described from the Turonian-Santonian succession of two sections located in the northern part of Wadi Qena, Eastern Desert. The diversity of the recorded species is low in the Turonian (six species), but comparatively high in the Coniacian-Santonian (twelve species). Of the recorded species, Most of these species (72%) are recorded for the first time from Wadi Qena area, one left in open nomenclature, Mecaster sp., represents a new species, and two, Phymosoma microtuberculatum and Thylechinus (T.) said, represent new records for Egypt. The taxonomic rank of Parapygus sudrensis has been changed. Phymosoma microtuberculatum which is known from the ‘Senonian’ of southwest Europe is recorded herein in the lower Turonian. Two echinoid assemblage zones are recognizable in each of the studied two sections. They are correlated with other fossil assemblage zones in Egypt. Faunal affinity and paleobiogeography of the species are discussed. A new arrangement of apical disc plating in spatangoids is described and discussed. 相似文献
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The fossil specimens discussed in this paper were collected from the grayish green mudstone and shale in the upper part of Lower Member of Middle Triassic Tongchuan Formation (T2t) in Shaanxi Province, China. Venationary feature correlation with old families and taxonomic discussion show that, among them, one specimen can be assigned to a new family - Sunopteridae fam. nov., which includes a new genus and species and can be referred to Order Protorthoptera Handlirsch, 1906 in taxonomic position, thus belonging to a new member of the Tongchuan Entomoassemblage of Shaanxi Entomofauna (belonging to Shaanxi Biota). The discovery of the new family and its new genus and species has certain reference values as follows: ① The discovery of the new family and its new genus and species fills firstly the vacancy in the protorthopterous field of China; ② In the meantime, it fills also the gaps of the valuable Middle Triassic protorthopterous fossil specimens between Late Carboniferous and Late Triassic Epochs in the world; ③ Judging from venationary features and taxonomic position, especially in the course of the formation of the merged vein of M and Cu, it formed a new unique and particular style of merged vein M+Cu. It not only is unique and simple, but also can be distinguished from the above mentioned 10 old families, thus providing important taxonomic evidence. 相似文献
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湘西北和鄂西云台观组孢子组合及其地层意义 总被引：3，自引：0，他引：3
通过对孢子组合的研究,确定云台观组属中泥盆统(季维特阶)。该地层不仅产出有丰富并保存完好的孢子,而且还有一些疑原类、虫颚和几丁虫碎片。文中描述的孢子包括19个属、30个种和变种,其中新种2个、新联合种1个,即小刺凸刺弓形脊三缝孢、多刺冠环三缝孢以及大刺剑刺三缝孢(新联合)。与北半球同类组合对比表明:湘西北和鄂西云台观组孢子组合主要为季维特阶的属种,从整个组合特征看,可能属晚季维特阶。文中还讨论了云台观组的沉积环境和地层意义。 相似文献
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The orthopteran Parahagla sibirica Sharov, 1968 is reported based on a male forewing for the first time from the Lower Cretaceous Chijinbao Formation of the Jiuquan Basin, Gansu Province, Northwest China. The diagnosis of the species is revised based on the new specimen. Its palaeogeographic and stratigraphic distributions are discussed, based on which two possible migration paths of the species are indicated as follows: (1) This species initially appeared in northern Hebei and western Liaoning, China at latest in the earliest Aptian, and further migrated northwestwards to Transbaikalia and westwards to Gansu Province soon later (early-middle Aptian). (2) Or alternatively, it originally occurred in Transbaikalia earlier than the Aptian and further migrated southwards to northern China during the Aptian. 相似文献
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A new species of the extinct ant genus Baikuris Dlussky, 1987 (Formicidae: Sphecomyrminae) is described and figured from a male preserved in a piece of ∼100 Myr amber from Charentes, in southwestern France. Baikuris maximus sp. nov., is distinguished from other species notably by its larger size, its forewing with vein 2M+Cu absent and vein 3Cu tubular, and the presence of a subpetiolar process. The diagnosis of the genus is emended, and its distribution during the Cretaceous is briefly discussed. 相似文献