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本文报道了辽东苏子河盆地中生代各门类化石,其中植物、双壳、腹足各3属3种;叶肢介6属12种(包括3个新种);介形虫7属10种;昆虫2属2种(包括一新属新种);硅化木1属1种,还有鱼类等,新命1新属4个新种。据此将苏子河盆地的小东沟组、小岭组、梨树沟组、聂尔库组和打石沟组的时代归属为早白垩世,并将小东沟组和小岭组与辽西的义县组及安徽的毛坦厂组进行对比;梨树沟组和聂尔库组与辽西的阜新组及安徽大别山区的黑石渡组进行对比。 相似文献
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本区炒米店组上部出现了厚达几十米的白云岩夹灰岩层段,按地层清理对“三山子组”的定义—以连续的大套白云岩出现为其底界［１］,这段地层不属三山子组,应归炒米店组。然而,不但这里的三山子组白云岩均含燧石结核,炒米店组顶部的灰岩也含大量的燧石结核和条带。于白云岩夹灰岩之层段发现大量的头足类化石,其时代属早奥陶世。该段地层可与区域上的三山子组ａ段下部和ｂ段相对比。这是鲁西地区寒武—奥陶系剖面的一种新类型。 相似文献
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西宁-民和盆地上第三系十分发育,皆为中新统陆相红层。该统自下而上划分为谢家组、车头沟组、咸水河组和“临夏组”,每组分为二个岩性段。含哺乳动物化石28属37种,介形虫化石15属43种,轮藻化石7属10种及3个孢粉组合;最大出露厚度1595.85m。该统与渐新统马哈拉沟组整合接触,其上被第四系不整合覆盖。哺乳动物呈草原型鼠兔类为主→草原型鼠类与森林型长鼻类、鹿类混生→森林型长鼻类等大量出现并伴生鼠兔类→草原型三趾马动物群的群体演化特征。介形虫为古中国大陆生物区中新世常见属种,轮藻为我国第三纪常见组合;孢粉为草原—森林型组合。 相似文献
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贵州早石炭世异珊瑚化石,目前仅见报导产于黔西威宁一属种。我们于1981年夏在黔南惠水摆金地区发现了两个异珊瑚化石,一个定为新种Hexahpyllia baijinensis sp.nvo.,另一个为Hexaphyllia sp.,暂未定种名,两个化石保存在一块灰岩上,采自下石炭统大塘组上司段。在这块灰岩上还有皱纹珊瑚、有孔虫等类化石。该新种与本属其他种不同点:林径微小,隔壁加厚明显;体腔呈花朵状。 相似文献
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笔者近年从事河南二叠系山西组地质工作，分析鉴定孢粉化石１４７３个。计６２个属，８９个种，６个近似种，６２个未定种，２个疑源类属。其中，三缝孢占５９．４％，单缝孢占３３．１％，花粉占４．７％，疑源类占２．８％。通过综合分析对比，笔者认为：山西组孢粉组合特征与国内、外同时代地层中的孢粉组合特征基本一致；孢粉的属、种变化与山西组所产动、植物化石有相关性，并进一步佐证了山西组煤层的成煤环境属滨海潮坪和三角洲分支流间湾环境。 相似文献
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《广东海洋大学学报》2021,(4)
【目的】综述硬组织微化学技术研究头足类洄游分布的现状和趋势。【方法】通过微化学技术研究头足类硬组织中所包含的重要信息,重点分析头足类的耳石、角质颚、眼睛晶体和内壳等硬组织在其洄游分布中的应用。【结果与结论】头足类的硬组织具有结构稳定、耐腐蚀、易获取、蕴含丰富生态信息的特点,已被广泛应用于年龄鉴定、生长估算、种群划分及摄食生态评估等领域;硬组织的微化学在头足类洄游分布研究中已取得一定的进展,但目前对于洄游路径的研究大多以推测等定性分析为主。 相似文献
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本文描述了百色盆地第三系沉积中１个花粉新属：爵床粉属（Ａｃａｎｔｈａｃｅａｅｐｏｌｌｉｓ）和３个新种：百色爵床粉（Ａｃａｎｔｈａｃｅａｅｐｏｌｌｓｈｏｓｅｅｎｓｉｓ）、百色厚壁三孔沟粉（Ｔｒｉｃｏｌｐｏｒｏｐｏｌｌｅｎｉｔｅｓｂｏｓｅｐａｃｈｙｄｅｒｍｕｓ）、平滑四孔沟粉（Ｔｅｔｒａｃｏｌｐｏｒｉｔｅｓｌａｅｖｉｇａｔｕｓ）。同时对新属中的３个未定种也作了简要描述。新属种化石分别产自上新统长蛇岭组、渐新统伏中组、始新统那读组。 相似文献
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山东莱阳盆地的昆虫化石最早为A.W.Grabau(1923)和C.Ping(1928)所描述,计6属8种。最近,洪友崇(1984)又描述了3属3种。这样,共计发表了9属11种。实际上,这个地区的昆虫化石极为丰富。本文所描述的6目12科16属19种只是最新采集的昆虫化石的一部分,其中有11新属13新种,4已知属新种和2已知种。张生、刘德正和上官义宁等同志帮助采集了标本;中国科学院南京地质古生物研究所胡 相似文献
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辽宁地区木化石丰富,现已发现早侏罗世松柏类硅化木材 5属 8种,其中包括 2个新种, 2个修订种, 3个已知种及 1个未定种,即： Protophyllocladoxylon chaoyangense Zhang et Zheng sp. nov.,P. franconicum Vogellehner, Protosciadopityoxylon liaoxiense Zhang et Zheng sp. nov., P. jeholense (Ogura) Zhang et Zheng comb. nov., Sciadopityoxylon heizyoense(Shimakura) Zhang et Zheng comb. nov., Protocedroxylon dibneri (Shilkina) Shilkina et Chudajb., Xenoxylon latiporosum Gothan, X.? sp.。本文对新种作了描述,对前人鉴定有误的属种进行了修订,并概述了 5个产地木材化石组合特征及其古气候环境。 相似文献
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A new member of Sphenopsida,Neolobatannularia gen. nov. from Late Triassic of western Liaoning,China
WANG Junyou LI Tao LIU Zhiping GUO Bin KANG Ai NA Yuling LI Yunfeng WANG Hongshan BO Junchen SUN Chunlin 《世界地质(英文版)》2019,22(1)
A new genus Neolobatannularia Sun et Li gen. nov. with the type species Neolobatannularia liaoningensis Sun et Li sp. nov. from the Upper Triassic Yangcaogou Formation of Beipiao, Liaoning, China, is described in this paper. The new taxon is attributed to Equisetales of Sphenopsida based on its branch with internodes, node and leaves borne in whorls on nodes. It is a new member of the Mesozoic Sphenopsida. Although the new taxon shares some morphological characters with the genus Lobatannularia Kawasaki, a genus widely distributed in the Permian Cathaysia flora in East Asia, and the genus Lobatannulariopsis Yang from the Late Triassic of southwestern China, its unique branching pattern is markedly distinguished from the two known genera. Some Triassic known species of Lobatannularia may belong to the present new genus Neolobatannularia. 相似文献
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1 INTRODUCTION The first published records of genus Batra-chospermum Roth in China are from Jao (1941), when eleven taxa were reported. Since then, Shi, Hu and Kumano (1993), Shi (1994a, 1994b), Hua and Shi (1996), Xie et al. (1999, 2003), Xie and Shi (2003) have described in more detail the species from China. To date, 23 taxa of Batrachospermum Roth in China have been reported, of which, B. yunnanense, B. nothocladoideum and B. transito-rium are new species of this genus, and are… 相似文献
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罗桂昌 《地球科学与环境学报》1993,(4)
本文报道的Palaeoweichselia tianjuensis sp.nov.产于甘肃天祝红土洼组。它是继P.yuani sze之后,在我国所报道的又一个纳缪尔期杂羊齿属化石,Palaeoweichselia 属可能是我国西北地区特有的一个晚石炭世早期标准化石属。 相似文献
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A new muricid gastropod species,L ataxiena lutescena sp. nov.,is described and illustrated. The new species was recognized during reidentification of the Muricidae collection in the Marine Biological Museum,Chinese Academy of Sciences,Qingdao. The specimens of the new species were collected from the East and South China Seas off Fujian,Guangdong,and Hainan Provinces. Lataxiena lutescena sp. nov. is similar to Lataxiena blosvillei(Deshayes,1832) in general shape,but can be distinguished from the latter by the shell sculpture and radular characteristics. Lataxiena lutescena sp. nov. also resembles Lataxiena bombayana(Melvill,1893),but differs from that species in the shell shape and anal notches and in lacking short spines on the shell. 相似文献
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Serge V.Naugolnykh 《世界地质(英文版)》2017,(1)
The paper deals with the Lower Kungurian( Philippovian Horizon; Lower Permian) biota of the Middle Cis-Urals,Russia.The biota is characterized on the basis of four representative localities( Philippovskoe Bus-stop,Philippovskian Quarry,Kamai and Kiselevo-Suksun Highway),which are situated in the stratotype area of the Kungurian stage.All the localities can be regarded as Lagersttten,but of authentically low biodiversity,since they represent oligotrophic lagoons of abnormal fluctuating salinity.General reconstruction of the Philippovian near-shore shallow-water ecosystem is given.Two new species of algae Algites philippoviensis sp.nov.,A.shurtanensis sp.nov.,and a new species of the limulids Paleolimulus kunguricus sp.nov.are described for the first time. 相似文献
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徐凤山 《中国海洋湖沼学报》1992,10(2):153-155
The present paper deals with 4 species of Family Lyonsiidae , collected from the China Seas : one new genus and new species, Sinolyonsia sinica gen . et sp. nov, one species, Lyonsia kawamurai recorded for the first time from the China Seas , and 2 species L . ventricosa Gould and Agriodesma navicula (Adams et Reeve) reported previously from the Yellow Sea by the author . 相似文献
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《中国海洋湖沼学报》2021,(5)
Sea pens are a highly specialized and morphologically distinct group of octocorallians,but many taxa were poorly described and their phylogenetic relationships are still poorly known.We describe two species of sea pens collected from the tropical Western Pacific:Alloptilella splendida gen.et sp.nov.and Scytalium veneris(Thomson Henderson,1906).Alloptilella splendida gen.et sp.nov.accords with the definition of the recently resurrected genus Ptilella Gray,1870 in most characters,but differs from the latter in the arrangement of autozooids and the location of mesozooids.The new species mostly resembles Pennatula naresi K(o|")lliker(1880),but differs by the location of me sozooids and the reddish color of sclerite s surrounding siphonozooids.The generic separation is also well supported by their genetic distances and the molecular phylogenetic trees constructed by the concatenated mtMutS-COI-28 S,where Alloptilella clustered with Scytalium Herklots,1858 and formed a clade with the cluster of Ptilella and Distichoptilum.Scytalium veneris,usually considered as a junior synonym of Scytalium sarsii Herklots,1858,is resurrected by recognizing their distinctive differences.This is the first record of Scytalium veneris outside its type locality,and the phylogenetic analysis indicates that Scytalium is a monophyletic group.Both the families Pennatulidae and Virgulariidae are polyphyletic,and more morphological and molecular data are needed to clarify the phylogenetic positions of pennatulacean families and genera. 相似文献