首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献，搜索用时 406 毫秒
1.
The newly recognized extant Asian conifer genus Cathaya is represented by fossil material in Europe. Female cones from the Oligocene of Saxony are assigned to C. europaea n. sp. ; these are distinguishable from the cones of the extant species of Cathaya. Cathaya abchasica n. sp. is based on foliar remains from the Pliocene of Abkhazia; the generic assignment is validated by comparison of the stomatal characteristics. The one previous fossil record of Cathaya in Europe is not considered valid. — J. A. Wolfe  相似文献   

2.
《International Geology Review》2012,54(12):2102-2104
Rozman, describing in 1960 the Famennian deposits of Mugodzhar, mentioned a new genus Pseudonudirostra to which were assigned Pseudonudirostra uralica (Nalivkin, 1947), P. posturalica sp. nov. and P. planoovalis (Nalivkin, 1937). Sartenaer in 1961 distinguished the genus Trifidorostellum with the type species Leiorhynchus dunbarense Haynes, 1916. A year later Rozman (1962) described the new genus Pseudoleiorhynchus (= Pseudonudirostra), with the type species Leiorhynchus uralicus Nalivkin. Sartenaer in 1963 visited Russia and both authors concluded that Pseudoleiorhynchus was a junior synonum of Trifidorostellum. The early Famennian T. dunbarense of America and the late Famennian T. uralicum of Russia form a single group of species of stratigraphic value for intercontinental correlation of Famennian deposits.--A.W. Norris.  相似文献   

3.
Tabulate corals, including new species of Cyrtophyllum (C. elegantum, C. altaicum, C. vulgaris), Propora (P. proheliolitoides), and Plasmoporella (P. altaica) aid in defining Upper Ordovician strata of Gornyy Altay region; in addition, new species of Heliolites (H. pachycanaliculoides), Favosites (F. karagemensis), Pachyfavosites (P. bazhenovae), Squameofavosites (S. karagemensis, S. altaicum), and Hexismia (H. asiatica) form part of a rich Late Silurian fauna within the same region.—T. E. Bolton  相似文献   

4.
This short section of Skarlato's monograph, Bivalve Mollusks of the Far Eastern Seas of the U. S. S. R. (Order Dysodonta), discusses the genus Arvella Bartsch, 1940 ms. The genus includes the species formerly assigned to Crenella. Diagnostic features of the species included in genus Arvella Bartsch are given. Vilasina Bartsch, 1940 ms is discussed, also The author states that the hinges of Vilasina clearly assign the species to the genus Crenella. The form and position of the umbo relate the species closely to the genus Arvella, though. The almost entirely smooth laminated surface distinguishes Vilasina from both genera, as does the finely serrated ventral edge of the shell. The last section discusses the genus Modiolus Lamarck, 1799. — A. W. Bellais.  相似文献   

5.
A new species of Caytonia, C. orientale, and a new genus and species Chankanella vachrameevi are described from Neocomian-Aptian coal bearing strata in the Primor'ye Territory, Suifun basin. The new species of Caytonia is differentiated from C. sewardii Thomas and C. canadensis (Berry) Bell on the basis of size and slight morphological variances. Only one specimen of a megasporophyll was available for study. Leaves found in the same stratum and attributed to the new species differ from other species of Sagenopteris chiefly in the greater length of the petioles of the leaflets. Chankanella vachrameevi is described as a Sagenopteris-like leaf. It differs from Sagenopteris in having a larger number of leaflets and in lacking anastomoses of veins in the leaflets. It is compared with Lesleva Lesquereux. Its leaflets are compared with Thinnfeldia pinnae, and the leaves of Tersiella Radczenko, Linquifolium and Protophyllocladus. — F. M. Hueber.  相似文献   

6.
Ammonoids of early Upper Scythian age are described from three localities in the Northern Caucasus. No data on relative stratigraphic position is given, but some forms are common to the different exposures and the author concludes that all the ammonoids are Upper Scythian (Olenekian). Affinites with Pacific faunas are stressed and the faunules are correlated with the Owenites zone of North America. Two new genera (Parinyoites and Subowenites) and three new species (Dieneroceras caucasicum, Parinyoites ,mastykensis, Subovvenites slavini)are proposed. Flemingites pulcher Waagen, Wyomingites aplanatus (White), Parussuria compressa (Hyatt and Smith), and Owenites koeneni (Hyatt and Smith) are described and figured. Parinyoites differs from Metinyoites in having rounded saddles and it lacks the keel and costation of Inyoites. Subowenites has reticulate ornamentation, unlike Owenites, Parowenites, and Pseudowenites; it also lacks the adventive notches in the median saddle of Pseudowenites. --E. T. Tozer.  相似文献   

7.
Six new species of the genus Bythocytheremorpha, including B. centroscrobiculata, B. aksuensis, B. bicornis, B. (?) abnormis, B. torulosa, and B. ilyini, are reported and described from beds of Upper Cretaceous age (Cenomanian through Santonian) of the southwestern part of the Gissar Range, located in the southeast of Soviet Central Asia. These relatively primitive Cretaceous ostracods, which possess an intricately sculptured carapace, seem to have lived in a shallow, warm, marine environment. — R. H. Benson.  相似文献   

8.
Three new species and two new genera of scleractinian corals are described from the upper Oxfordian (Jurassic) limestones of Azerbaijan. Cyathopora parva, Thecosmilia vurguni, and Thecosmilia zagaliensis are described as new. The genus Brevimaeandra (Type species: B. alizadei nov. sp.) is compared with Mycetophyllopsis and Maeandrastraea, and is placed in the Family Montlivaltiidae. Grandifavia (Type species: G. bendukidzeae, nov. sp.) is placed in the Family Faviidae and is compared with Favia and Nefocoenia. No other constituents of the fauna are listed nor are references to such lists given. A brief introduction states that the limestones of middle Oxfordian age are probably reworked reef deposits, and that the coral and sponge reefs were deposited in waters probably not over 90 m deep. No stratigraphic sections are given. — D. F. Squires.  相似文献   

9.
《International Geology Review》2012,54(10):1860-1863
Putrya describes the new species Streblus galicianus, S. mjatliukae, S. pseudobeccarii, and S. granulosus from upper Tortonian (Miocene) deposits in Ciscarpathia.—M. A. Buzas  相似文献   

10.
The new subfamily Galliaecytherideinae is established in Cytherideinae Sars, 1925 for Galliaecytheridea, Lyubimovina, Palaeocytheridella, Asciocythere, Rubracea and Procytheridea. Lyubimivina is removed as a subgenus Palaeocytheridella and given generic status. Morphologic, phylogenetic and geographic justifications for the above actions are discussed. — I. G. Sohn.  相似文献   

11.
A new plant species, Cooksonia crassiparietilis, is described from the Lower Devonian of central Kazakhstan. It is found associated with Psilophyton princeps Dawson and Zosterophyllum australianum Cookson and Lang. The species is differentiated from other species of Cooksonia on the basis of sporangium size and wall structure. Forked sporangia are reported. Dehiscence of the sporangia is described as apical and lateral. This report extends the geographic range of the genus. — F. M. Hueber.  相似文献   

12.
The latest Cambrian deposits of the Malyy Karatau in Kazakhstan contain nautiloid cephalopods associated with trilobites. Four new species of nautiloids are described and assigned as follows: Ellesmeroceratidae — Tamdoceras n. gen; T. lisogorae n. sp.; T. logicameratum n. sp.; Protocycloceratidae — Chabactoceras n. gen.; C. balashovi n. sp. — C. R. Palmer.  相似文献   

13.
《International Geology Review》2012,54(12):2105-2114
  相似文献   

14.
The classification of the tribe Bereselleae of the family Dasycladaceae is discussed in some detail. The genera Beresella, Samarella and Dvinella are placed in the tribe with Trinodella, being treated as a subgenus of Dvinella. A number of new species are described: four in Beresella, six in Dvinella subgenus Dvinella and two in Dvinella subgenus Trinodella. The stratigraphic occurrence of the tribe in the Carboniferous at a number of localities on the Russian Platform is represented and a strong generic-facies association is pointed out. A pattern of variation in morphological form with sediment type is also discussed. — W. Adey.  相似文献   

15.
The new fenestellid bryozoan family Fenestraliidae is proposed to include Fenestralia Prout and two new genera, Parafenestralia and Triznella, from the Upper Permian of the Russian platform. The new family is compared with the Polyporidae and the Fenestellidae and is thought to be more closely allied to the latter. Parafenestralia arborescens (Netschajew), Triznella permiana (Nikiforova), T. viatkensis (Nikiforova), and the new species T. formosa are described and illustrated.—J. Utgaard  相似文献   

16.
A new species of the subgenus Solenopora (Neosolenopora) is described from upper Eocene, yellow-green, sandy-Micaceous clay filling, a pre-Paleogene excavation in a Precambrian surface at Ingulets, Dnepropetrovsk Province, 'USSR. The new species is Solenopora (Neosolenopora) multiformis. Excellent detail of the thalli is preserved and considerable anatomical and morphological detail is presented The discovery of this form constitutes the third report of Solenopora in the Cenozoic of Western Eurojie. The plants are associated with large nurnbetS of right valves from the pelecypod, Ostrea callifera Lam var. sokolovi Klushn. Other invertebrates associated with algal remains are Spondylus, Serpula and Nummulites. Paleoecological interpretation of the occurrence of the algal remains is given as a rocky shoal inhabited by a biocoenosis of sublittoral habit in depths of not more than 10–20 m. — F. M. Hueber.  相似文献   

17.
《International Geology Review》2012,54(10):1844-1846
Kurgalimova discusses the displacement of the aperture and the modification of its shape in the genera Gaudryina, Belorussiella, and Paragaudryina. The species G. navarroana Cushman, B. intermedia sp. nov., and P. pseudonavarroana (Balakh.) occur in fairly distinct stratigraphic position in lower to middle Eocene deposits of the southeastern part of the Turgay depression, South Emba and Bukhara Province.—M.A. Buzas  相似文献   

18.
The author discusses the conceptual bases of the pelecypod family Allorismidae and of the Carboniferous genera Allorisma, Allorismiella, Edmondia, Edmondiella, and Pseudedmondia. There is an extensive discussion of the hinge line structures of Allorisma based on Russian specimens, and four species of the genus from the Carboniferous of the Moscow area are described. Astaf'yeva-Urbaitis overlooked Wilson's 1959 paper in which Allorisma was shown to be a junior synonym of Edmondia; as a result Astaf'yeva-Urbaitis' nomenclature is faulty. Wilson replaced Allorisma with the new generic name Wilkingia. — J. Pojeta, Jr.  相似文献   

19.
  相似文献   

20.
《International Geology Review》2012,54(10):1814-1821
Representatives of the bryozoan family Rhabdomesidae (the family name and derivatives, misspelled throughout the original version, are corrected in this translation), found in the Lower Kazanian deposits of the Russian Platform and the Upper Permian of the Little Caucasus and of Transcaucasia are described as new species of Rhabdomeson, Rhombopora, and Neorhombopora, n. gen. Rhombopora crassa Ulrich, 1884, from the Upper Carboniferous (Upper Pennsylvanian) of North America, is designated the type species of Neorhombopora, which is characterized by spiral budding in ihe axial zone and by the absence of megacanthopores. Although only three genera and four species of rhabdomesids are recognized in the Upper Permian of the Soviet Union, specimens are comparatively abundant, and the species seem to be good index fossils. Rhabdomeson noinskyi was identified from various localities in the Lower Kazanian of the Vyatka and Nemda river basins; Rhabdomeson floriforum occurs in the Upper Permian Gnishik suite at several localities in Transcaucasia; Rhornbopora ornata is known from the Lower Kazanian of Kirov and Arkhangel'sk Provinces, Komi ASSR; and Neorhombopora polita was found at one locality in the Lower Kazanian of Kirov Province.—H. Duncan  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号