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1.
Two monotypic genera of coccosteoid eubrachythoracid arthrodires are described from the Upper Devonian Gogo Formation of Western Australia as Compagopiscis gen. nov. and Gogopiscis gen. nov. They are most closely related to Torosteus Gardiner & Miles, also from the Gogo Formation, and all three are placed in the family Plourdosteidae Vezina, 1990; Compagopiscis and Gogopiscis are jointly the sister-group of Torosteus.  相似文献   

2.
A new genus of long-snouted, eubrachythoracid arthrodire, Camuropiscis gen. nov., is described from the Upper Devonian Gogo formation of Western Australia. It is represented by two species, the type C. concinnus sp. nov. and C. laidlawi sp. nov. These species are interchangeable with Coccosteus spp. in a sketch cladograin for arthrodires; their phylogenetic relationships are not known in any detail. C. concinnus has a well-preserved pelvic girdle and throws new light on the structure of this element in arthrodires.  相似文献   

3.
New durophagous arthrodires from Gogo, Western Australia   总被引:1,自引:0,他引:1  
Three new monotypic genera of eubrachythorarid arthrodires with crushing toothplates are described from the Upper Devonian Gogo Formation of Western Australia as Bruntonichthys multidens gen. et sp. nov., Bullerichthysfascidens gen. et sp. nov. and Kendrickkhthys cavemosus gen. et sp. nov. Their structure and relationships are discussed within the framework provided by a sketch cladogram. All three are interchangeable with Coccosteus spp. but their phylogenetic relationships are not known in any detail. However, Kendrickkhthys does appear to be immediately related to Dinomylostoma from North America.  相似文献   

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6.
A new eubrachythoracid arthrodire, Simosteus tuberculatus gen. et sp. nov., is described from the Upper Devonian Gogo Formation of Western Australia and its structure and relationships are discussed. It is related to the trematosteids, leiosteids and hadrosteids on the evidence of 'fused' preorbital and postnasal bones.  相似文献   

7.
A pachyosteomorph arthrodire from Gogo, Western Australia   总被引:2,自引:0,他引:2  
A new monotypic genus of eubrachythoracid arthrodire is described from die Upper Devonian Gogo Formation of Western Australia as Incisoscutum ritchiei gen. et sp. nov. It is at die pachyosteomorph level of organization, having no contact between the plates of die flank and those of the ventral shield behind the pectoral fin. It is interchangeable widi Coccosteus spp. and a number of earlier described Gogo forms in a sketch dadogram for arthrodires, but its phylogenedc relationships are unknown. Well preserved material of die scapulocoracoid throws new light on die structure of this element in arthrodires, particularly widi respect to variations in die pattern of canals and foramina.  相似文献   

8.
A primitive eubrachythoracid arthrodire from Gogo, Western Australia   总被引:2,自引:0,他引:2  
A new eubrachythoracid arthrodire, Hanytoombsia elegans gen. et sp. nov., is described from the Upper Devonian Gogo formation of Western Australia. Its structure and relationships are discussed within the framework provided by a new sketch cladogram for arthrodires. H. elegans is morphologically similar to Coccosteus cuspidatus , but its relationships among primitive eubrachythoracids are unknown.  相似文献   

9.
A new eurypterid, Rhenopterus waterstoni sp. nov., is described from the Gogo Formation (Frasnian, Upper Devonian) of Western Australia. This species is distinguished from related forms by the tuberculation of the anteriormost tergite and crenulated posterior margins of the carapace and opisthosomal segments. It is the only eurypterid specimen known from the Gogo Formation, the most complete eurypterid from Australia, and also the youngest representative of Rhenopterus in the fossil record. Structures retrieved from between the prosomal-opisthosomal juncture comprise polygonal tubes 30–40 μm in diameter, which are interpreted as sarcomeral sheaths of muscular tissue. Rhenopterus is reviewed: R. latus Størmer, 1936 is synonymized with R. diensti Størmer, 1936 as it is here recognized as a female sexual dimorph; R. maccarthyi (Kjellesvig-Waering, 1934) is an orthocone nautiloid.  相似文献   

10.
A new camuropiscid arthrodire, Latocamurus coulthardi gen. et sp. nov., is described from the Upper Devonian Gogo Formation, Western Australia. Latocamurus , known from two complete specimens, is recognized as a camuropiscid by its narrow, spindle-shaped armour, deep postnasal plates participating in the orbits, preorbital plates which meet mesially, cheek unit firmly sutured to skull roof, posterior check plates tightly interconnected and much reduced, and the robust durophagous dentition. It is characterized by its downturned snout, broad, flat rostral plate, and narrow, deep parasphenoid. It is placed phyletically as the plesiomorphic sister taxon to all other camuropiscids which are more derived in having, inter alia , an anterior lateral plate which anteriorly contacts the anterior ventrolateral plate and pointed rostral plates. The family Camuropiscidae Dennis & Miles 1979b is redefined to incorporate features of the new genus. Camuropiscids and Incisoscutum are closely related by features of the postnasal plate and cheek.  相似文献   

11.
Cuticles of two fossil cycads and seven epiphytic fungi are described in this paper. They are Nilssonia sinensis Yabe et Oishi, Ctenis lyrata Li et Ye; Perisporiacites shaheziensis sp. nov., Notothyrites haizhouensis sp. nov., Microthyriacites pilcatus sp. nov., M. fuxinensis sp. nov., Stigmateacites polymorphus gen. et sp. nov., S. simplex gen. et sp. nov., Liaoningnema multinoda gen. et sp. nov. Materials were collected from the Shahezi Formation of Changtu district and the Haizhou Formation in Haizhou mine-field of Li- aoning Province, China. The age of these tossils is Early Cretaceous.  相似文献   

12.
本文描述古蝉科化石2新属、6新种,即Liaocossushuegen.etsp.nov.,L.beipiaoensisgen.etsp.nov,L.exiguusgen.etsp.nov,L.fengningensisgen.etsp.nov,L.Pingquanensisgen.etsp.nov.,Miracossusingentiusgen.etsp.nov.。这批化石保存有完整的虫体标本,使作者能够进一步研究古蝉类化石的虫体特征。化石采于冀北和辽西晚侏罗世义县组地层中,保存在中国地质博物馆。  相似文献   

13.
辽西义县组细蜂总科(昆虫纲,膜翅目)昆虫化石   总被引:4,自引:0,他引:4  
描述了产自辽宁北票上园地区黄半吉沟上株罗统义县组下部细蜂总科(Proctotrupoidea)昆虫化石10属12种,其中8属12新种,这些化石分属于3科,其中Gurvanotrupes stolidus sp.nov.,Gurvanotrupes exiguus sp.nov.,Liaoserphus perarus gen.et sp.no.,alloserphus saxosus gen.et sp.nov.,Scalprogaster fossilis gen.et sp.nov.,steleoserphus beipiaoensis gen.et sp.nov.,Saucrotrupes decorosus gen.et sp.nov和Ocnoserbphous sculptus gen.et sp.nov.归入细蜂科(Serphidae=Proctotrupidae);Protocyrtus validus sp.nov.和Spherogaster cornoata gen.et sp,nov。归入柄腹细蜂科(heloridae);Liaoropronia leonina gen.et sp.nov和Liaoropronia regia gen.et sp.nov.归入窄腹细蜂科(Roproniidae),对我们中生代细蜂总科化石的研究状况作了回顾。  相似文献   

14.
A new species of Eastmanosteus Obruchev is described from the Upper Devonian Gogo Formation of Western Australia as E. calliaspis sp. nov. It is at the pachyosteomorph level of organization having no contact between the plates of the flank and those of the ventral shield behind the pectoral fin. Well preserved material of the parasphenoid and scapulocoracoid throws further light on the structure of these elements in arthrodires. The genus Eastmanosteus is reviewed.  相似文献   

15.
Nymphs of fossil grylloblattid insects are revised. Newly described taxa are Lemmatonympha gracilissima gen. et sp. nov. and Kaltanympha vorcutensis sp. nov. from the Verkhne-Syr’yaginsk locality (Ufimian, Lek-Vorkuta Formation in the Vorkuta Coal Basin), genera Sylvalitoralis gen. nov. and Tshebardanympha gen. nov. from the Tshekarda locality (Kungurian, Koshelevka Formation, Middle Urals), Tataronymphakamensis gen. et sp. nov. from the Tikhie Gory locality (Lower Kazanian, linguloid beds of the Baitugan Formation, Tatarstan), and Kaltanympha ornata sp. nov. from the Kerbo locality (Upper Tatarian, lower part of the Degali Formation, Evenki Autonomous Region). Liomopterites (?) gracilis Sharov, 1961 from Lower Kazanian deposits of the Kuznetsk Formation in the Kuznetsk Basin is transferred to the genus Kaltanympha Sharov, 1961; Permonympha arcuata Sharov, 1957 from the same locality is synonymized under Permonympha gracile Sharov, 1957; the nymph described from the Karatau locality (Upper Jurassic, Karabastau Formation in southern Kazakhstan) as Blattogryllus karatavicus Rasnitsyn, 1976 is excluded from grylloblattids. Keys to extinct grylloblattid nymphs are provided.  相似文献   

16.
辽西义县组长节锯蜂科(昆虫纲,膜翅目)昆虫化石   总被引:4,自引:0,他引:4  
描述产自辽宁西部北票上园地区和凌源大王杖子义县组长节锯蜂科(Xyelidae)巨长节锯蜂亚科(Macroxyelinae)昆虫化石12种,归于4族8属,其中6新属12新种,包括Angaridyela robusta sp.nov.,Angaridyela exculpta sp.nov.,Angaridyela suspecta sp.nov.,Angaridyela endemica sp.no  相似文献   

17.
湖北宜昌黄花场早奥陶世疑源类的新类型   总被引:7,自引:3,他引:7  
该文报道了湖北宜昌黄花场下奥陶统大湾组下段的疑源类(海洋微体浮游植物化石)新类型,描述和建立3新属:Papilliferumgen.nov.,1gen.nov.和Yichangiagen.nov.;2新种:Papilliferumirregularegen。etsp.nov.,Yichangiabiporosagen;etsp。nov。及重新修改和组合的3属、种:Papilliferumrhabdocladium(Lu)comb.etemend.nov.,P。striatum(Lu)comb.etemend。nov。和Stelomorphaerchunensis(Fang)comb;etemend.nov.这些疑源类新类型目前仅见于我国西南的部分地区的早奥陶世地层。它们为探讨早奥陶世海洋微体浮游植物的区域分布及扬子地台的古地理位置,提供了重要的证据.  相似文献   

18.
中国内蒙古中侏罗世脉翅目昆虫化石—新科(英文)   总被引:1,自引:0,他引:1  
建立脉翅目昆虫化石新科———Grammolingiidaefamnov .,并描述该科化石 3新属 6新种 :Grammolingiaboigen .nov .ofsp .nov .,Litholingiarhoragen .nov .ofsp .nov .,Litholingiaeumorphagen .nov .ofsp .nov .,Litholing iapolychotomagen .nov .ofsp .nov .,Leptolingiajurassicagen .nov .ofsp .nov .,Leptolingiatianyiensisgen .nov .etsp .nov ..给出了新科的属级检索表 ,描述的所有模式标本均采自于内蒙古自治区宁城县中侏罗世九龙山组地层中。标本分别保存在义县博物馆和首都师范大学生物系。本次发现再次表明目前关于脉翅目昆虫的认识仍然十分贫乏。  相似文献   

19.
河南叶县下寒武统辛集组单板类和腹足类化石的研究   总被引:5,自引:3,他引:5  
本文描述和讨论了河南叶县杨寺庄下寒武统辛集组单板类13种,腹足类2种,未定类1种。其中包括2新属6新种:Repenoconus xinjiensis gen.nov.,Scenella pycna sp.nov.,Securiconus vulgaris sp.nov.,Obtusocnus grossicostus sp.nov.,Igorellina proboscis sp.nov.,Gal  相似文献   

20.
Abstract  A new family, Grammolingiidae of fossil lacewings is erected, of which 3 new genera and 6 new species are described and illustrated: Grammolingia boi . gen. nov. et sp. nov., Lithlingia rhra gen. nov. et sp. nov., Litholingia eumopha gen. nov. et sp. nov. and Litholingiu polychotom gen. nov. et sp. nov., Leptolingia jurassica gen. nov. et sp. nov. and Leptolingia tianyiensis gen. noc. et sp. nov. A key to genera within this new family is provided. All specimens described were collected from the Middle Jurassic Jiulongshan Formation of Eastern Inner Mongolia, China. The present discovery demonstrates that present knowledge of the Jurassic Neuropetra fauna remains very poor. The fossil specimens are deposited in Yizhou Fossil Museum and Department of Biology, Capital Normal University, respectively.  相似文献   

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