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Wyświetlanie 1-10 z 22
Tytuł:
On some Turonian and Coniacian ammonites from central Colombia
Autorzy:
Kennedy, William James
Tematy:
ammonites
Turonian
coniacian
Colombia
amonity
turon
koniak
Kolumbia
Pokaż więcej
Data publikacji:
2020
Powiązania:
https://bibliotekanauki.pl/articles/1835595.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Geologica Polonica; 2021, 71, 3; 259-285
0001-5709
Pojawia się w:
Acta Geologica Polonica
Opis:
The rich collections of Turonian and Coniacian ammonites from Colombia, housed in the University of California Museum of Paleontology, Berkeley, are described, with 20 species recognized, referred to the genera Reymenticoceras Kennedy, 2018, Vascoceras Choffat, 1898, Fagesia Pervinquière, 1907, Wrightoceras Reyment, 1954a, Subprionocyclus Shimizu, 1932, Subprionotropis Basse, 1951, Prionocycloceras Spath, 1926, Barroisiceras de Grossouvre, 1894, Forresteria Reeside, 1932, Niceforoceras Basse, 1948, Peroniceras de Grossouvre, 1894, Gauthiericeras de Grossouvre, 1894, Protexanites Matsumoto, 1955, and Metaptychoceras Spath, 1926. One species, Reymenticoceras ornatum, is new. Most of the species described can be assigned to the substages and ammonite zones recognized in Western Europe.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Turonian ammonite faunas from the southern Corbières, Aude, France
Autorzy:
Kennedy, W. J.
Bilotte, M.
Melchior, P.
Tematy:
ammonites
biostratigraphy
Turonian
Cretaceous
France
amonity
biostratygrafia
turon
kreda
Francja
Pokaż więcej
Data publikacji:
2015
Powiązania:
https://bibliotekanauki.pl/articles/950357.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Geologica Polonica; 2015, 65, 4; 437-494
0001-5709
Pojawia się w:
Acta Geologica Polonica
Opis:
The Turonian successions of the southern Corbières comprise three transgressive-regressive cycles in which ammonites occur in three intervals. The lowest comes from the glauconitic basal transgressive unit of the first cycle, and comprises 21 species, including Kamerunoceras douvillei (Pervinquière, 1907), Kamerunoceras turoniense (d’Orbigny, 1850), Spathites (Jeanrogericeras) revelerianus (Courtiller, 1860), Spathites (Jeanrogericeras) combesi (d’Orbigny, 1856), Mammites nodosoides (Schlüter, 1871), Mammites powelli Kennedy, Wright and Hancock, 1987, Fagesia tevestensis (Péron, 1896), Neoptychites cephalotus (Coutiller, 1860), Thomasites rollandi (Thomas and Péron, 1889), Wrightoceras wallsi Reyment, 1954, and Choffaticeras (Choffaticeras) quaasi (Péron, 1904). This is a Lower Turonian assemblage referred to the Mammites nodosoides Zone, although the possibility that elements from the preceding Fagesia catinus Zone are also present cannot be excluded. The fauna from the transgressive glauconitic interval of the succeeding cycle comprises nine species, including Romaniceras (Romaniceras) mexicanum Jones, 1938, Romaniceras (Yubariceras) ornatissimum (Stoliczka, 1864), Pseudotissotia galliennei (d’Orbigny, 1850), Collignoniceras woollgari (Mantell, 1822) sensu lato, Coilopoceras springeri Hyatt, 1903, and Eubostrychoceras (Eubostrychoceras) saxonicum (Schlüter, 1872). They indicate the Middle Turonian Romaniceras (R.) mexicanum and R. (Y.) ornatissimum zones. The highest fauna, from the Marnes supérieurs de Saint-Louis of the Saint-Louis syncline, is: Subprionocyclus sp. juv., Prionocyclus sp. and Worthoceras cf. rochatianum (d’Orbigny, 1850). The Subprionocyclus are minute individuals that resemble S. bravaisianus (d’Orbigny, 1841), and suggest the presence of the lower Upper Turonian bravaisianus Zone.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coilopoceras inflatum Cobban and Hook, 1980, a United States Western Interior ammonite from the Upper Turonian of the southern Corbières, Aude, France
Autorzy:
Melchior, P.
Bilotte, M.
Kennedy, W. J.
Tematy:
ammonites
biostratigraphy
Turonian
Cretaceous
France
amonity
biostratygrafia
turon
kreda
Francja
Pokaż więcej
Data publikacji:
2017
Powiązania:
https://bibliotekanauki.pl/articles/139013.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Geologica Polonica; 2017, 67, 1; 121-134
0001-5709
Pojawia się w:
Acta Geologica Polonica
Opis:
A newly discovered ammonite faunule from the Padern region of the southern Corbières in southern France includes representatives of typical northwest European Upper Turonian species Subprionocyclus cf. neptuni (Geinitz, 1850) and Lewesiceras cf. woodi Wright 1979, tethyan/ northwestern Pacific species Phyllopachyceras cf. ezoense (Yokoyama, 1890), Anagaudryceras involvulum (Stoliczka, 1865) and, Desmoceras (Pseudouhligella) sp., together with Coilopoceras inflatum Cobban and Hook, 1980, a species previously known only from New Mexico in the United States, where it is regarded as Middle Turonian. The faunule occurs above one with Romaniceras (R.) mexicanum Jones, 1938 and Coilopoceras springeri Hyatt, 1903, also originally described from New Mexico and northern Mexico, and recently described from the Uchaux massif in Vaucluse in southern France. The records suggest that the base of the Upper Turonian may be drawn at different, higher level in the United States Western Interior than in Europe. The coming together of these mixed faunal elements may be a result of high sea levels, and changing oceanic circulation patterns.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Turonian (Upper Cretaceous) inoceramid bivalves of the genus Mytiloides from the Sredna Gora Mountains, north-western Bulgaria
Autorzy:
Dochev, D.
Tematy:
Turonian
inoceramid bivalves
taxonomy
Mytiloides
biostratigraphy
turon
małże
taksonomia
biostratygrafia
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Data publikacji:
2015
Powiązania:
https://bibliotekanauki.pl/articles/139314.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Geologica Polonica; 2015, 65, 1; 101-119
0001-5709
Pojawia się w:
Acta Geologica Polonica
Opis:
The inoceramid bivalves of the genus Mytiloides, from the Turonian (Upper Cretaceous) of the Sredna Gora Mts (north-western Bulgaria), are studied. The material comes from three sections: Izvor, Filipovtsi, and Vrabchov dol. Eight species are described taxonomically, with one left in open nomenclature: M. cf. mytiloides (Mantell, 1822), M. mytiloidiformis (Tröger, 1967), M. incertus (Jimbo, 1894), M. scupini (Heinz, 1930), M. herbichi (Atabekian, 1969), M. striatoconcentricus (Gümbel, 1868), M. labiatoidiformis (Tröger, 1967) and M. carpathicus (Simionescu, 1899). Mytiloides incertus and Mytiloides scupini are index species for the eponymous Upper Turonian inoceramid biozones
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stratigraphy and palaeoenvironments in the upper Turonian to lower Coniacian of the Saxonian Cretaceous Basin (Germany) - insights from calcareous and agglutinated foraminifers
Autorzy:
Besen, Richard M.
Achilles, Mareike
Alivernini, Mauro
Voigt, Thomas
Frenzel, Peter
Struck, Ulrich
Tematy:
foraminifera
palaeoecology
biostratigraphy
Turonian
coniacian
Germany
otwornice
paleoekologia
biostratygrafia
turon
koniak
Niemcy
Pokaż więcej
Data publikacji:
2022
Powiązania:
https://bibliotekanauki.pl/articles/2086663.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Geologica Polonica; 2022, 72, 2; 159--186
0001-5709
Pojawia się w:
Acta Geologica Polonica
Opis:
Upper Turonian to lower Coniacian marls of the Strehlen Formation of the Graupa 60/1 core were investigated for their foraminiferal content to add stratigraphical and palaeoenvironmental information about the transitional facies zone of the Saxonian Cretaceous Basin. Further comparison with foraminiferal faunas of the Brausnitzbach Marl (Schrammstein Formation) were carried out to clarify its relationship to the marls of the Graupa 60/1 core. Tethyan agglutinated marker species for the late Turonian to early Coniacian confirm the proposed age of the marls of the Graupa 60/1 core and the Brausnitzbach Marl. The palaeoenvironment of the marls reflects middle to outer shelf conditions. The maximum flooding zones of genetic sequences TUR6, TUR7 and CON1 could be linked to acmes of foraminiferal species and foraminiferal morphogroups. In general, a rise of the relative sea-level can be recognised from the base to the top of the marls of the Graupa 60/1 core. While agglutinated foraminiferal assemblages suggest a generally high organic matter influx and variable but high productivity in the Graupa 60/1 core, the Brausnitzbach Marl deposition was characterized by moderate productivity and a generally shallower water depth.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mosasauroid predation on an ammonite – Pseudaspidoceras – from the Early Turonian of south-eastern Morocco
Autorzy:
Gale, A. S.
Kennedy, W. J.
Martill, D.
Tematy:
predation
ammonite
mosasauroidae
Cretaceous
Turonian
Morocco
drapieżnictwo
amonit
mozazaury
kreda
turon
Maroko
Pokaż więcej
Data publikacji:
2017
Powiązania:
https://bibliotekanauki.pl/articles/138610.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Geologica Polonica; 2017, 67, 1; 31-46
0001-5709
Pojawia się w:
Acta Geologica Polonica
Opis:
A juvenile specimen of the ammonite Pseudaspidoceras from the Early Turonian of the Goulmima area in the Province of Er-Rachida in south-eastern Morocco shows clear evidence of predation by a tooth-bearing verte-brate. Most of the body chamber is missing, as a result of post-burial compactional crushing. The adapertural part of the shell on the left flank of the surviving fragment of body chamber bears six circular punctuations; the right flank four. These are interpreted as the product of a single bite by a mosasauroid, probably a Tethysaurus. The taxonomy of the Goulmima Pseudaspidoceras is discuused in an appendix.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Foraminifera and Late Cenomanian-Turonian biostratigraphy of the northern palaeobiogeographic district of Western Siberia
Autorzy:
Podobina, Vera
Tematy:
Foraminifera
biostratigraphy
Upper Cenomanian
Turonian
Western Siberia
otwornice
biostratygrafia
Turon
Zachodnia Syberia
Pokaż więcej
Data publikacji:
2013
Powiązania:
https://bibliotekanauki.pl/articles/94591.pdf  Link otwiera się w nowym oknie
Źródło:
Geologos; 2013, 19, 3; 201-227
1426-8981
2080-6574
Pojawia się w:
Geologos
Opis:
The study of 114 core samples from seven borehole sections of the Van-Eganskaya area in the central part of Western Siberia yielded sufficient data to investigate the Late Cenomanian-Turonian foraminifers, palaeoenvironments, and the Late Cenomanian-Turonian biostratigraphy of this poorly studied area. Two Late Cenomanian foraminifer zones were established, viz. a (lower) Saccammina micra - Ammomarginulina sibirica Zone and an (upper) Trochammina wetteri tumida - Verneuilinoides kansasensis Zone. They reflect changes in the species composition of the foraminifer assemblages and lithology of the host rocks of the Uvatskian Horizon. In the lower part of the upper zone, beds with Gaudryinopsis nanushukensis elongatus are present. The changes in the species composition and lithology of the upper Cenomanian resulted from water-depth variations during the Boreal transgression. Two distinct assemblages and two homonymous zones, viz. the (lower) Gaudryinopsis angustus and the (upper) Pseudoclavulina hastata zones occur in the Turonian clayey cap-rocks of the superimposed Kuznetsovskian Horizon. Comparison of the Late Cenomanian-Turonian assemblages from the West-Siberian and Canadian provinces of the same Arctic palaeobiogeographical realm shows that the West-Siberian species are the same as, and closely related to, Canadian taxa, along with geographical subspecies. This comparison allows a detailed correlation, which results in a precise dating of the foraminifer zones.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Upper Albian, Cenomanian and Upper Turonian ammonite faunas from the Fahdène Formation of Central Tunisia and correlatives in northern Algeria
Autorzy:
Kennedy, William James
Tematy:
Ammonites
Cretaceous
Albian
Cenomanian
Turonian
Algeria
Tunisia
amonity
kreda
Alb
cenoman
Turon
Algieria
Tunezja
Pokaż więcej
Data publikacji:
2020
Powiązania:
https://bibliotekanauki.pl/articles/138843.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Geologica Polonica; 2020, 70, 2; 147-272
0001-5709
Pojawia się w:
Acta Geologica Polonica
Opis:
Over 130 species are documented from the Upper Albian, Cenomanian and Upper Turonian Fahdène Formation and correlatives in Central Tunisia and northern Algeria, based on material described by Henri Coquand (1852, 1854, 1862, 1880), Léon Pervinquière (1907, 1910), Georges Dubourdieu (1953), Jacques Sornay (1955), and new collections. The material consists predominantly of limonitic nuclei, together with adults of micromorphs. There is no continuous record, and a series of faunas are recognised that can be correlated with the zonation developed in Western Europe. These are the Upper Albian Ostlingoceras puzosianum fauna, Lower Cenomanian Neostlingoceras carcitanense and Mariella (Mariella) harchaensis faunas, the upper Lower to lower Middle Cenomanian Turrilites scheuchzerianus fauna, Middle Cenomanian Calycoceras (Newboldiceras) asiaticum fauna, Upper Cenomanian Eucalycoceras pentagonum fauna, and the Upper Turonian Subprionocyclus neptuni fauna. Two new micromorph genera are described, Coquandiceras of the Mantelliceratinae and Cryptoturrilites of the Turrilitinae. Most of the taxa present have a cosmopolitan distribution, with a minority of Boreal, North American and endemic taxa.
Dostawca treści:
Biblioteka Nauki
Artykuł
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