Results 21 to 30 of about 4,290 (216)

Influence of the Frasnian - Famennian extinction event on the reef development within the Pechora syneclise

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2017
In a complex and diverse reef community composition the biogenic nature of the deposition of the carbonate material is the most evident. Biotic crises, after which a significant evolutionary update of the organic world took place, also affected ...
L. M. Zhuravleva
doaj   +1 more source

Reflection of global events Frasnian epoch in the section of the western slope Polar Urals

open access: yesЛитосфера, 2018
For the first time we carried out a detailed comprehensive study of Frasnian stage in the lower сurrent of the Malaya Usa River located within the Eletskaya structural-formational zone of the Polar Urals.
Dmitrii B. Sobolev, Marina A. Soboleva
doaj   +1 more source

The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

open access: yesEuropean Journal of Taxonomy, 2022
The ammonoids of the suborder Gephuroceratina from the Roteisenstein (Red Ironstone) Formation of the area around Dillenburg (eastern Rhenish Mountains) are revised, mainly based on historical collections stored in the Museum für Naturkunde, Berlin. The
Dieter Korn, Jürgen Bockwinkel
doaj   +1 more source

Indigenous demosponge spicules in a Late Devonian stromatoporoid basal skeleton from the Frasnian of Belgium [PDF]

open access: yes, 2014
This paper records the first example of a demosponge spicule framework in a single specimen of a Devonian stromatoporoid from the Frasnian of southern Belgium.
Alvarez   +51 more
core   +1 more source

UPPER FRASNIAN (UPPER DEVONIAN) BRYOZOANS IN PROXIMAL FACIES OF SOUTHERN BELGIUM

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2015
Seven bryozoan species are described from the shallow-water Aisemont and Lambermont formations (upper rhenana Conodont zone, upper Frasnian) in southern Belgium. The studied interval is situated between the lower and upper Kellwasser events.
ANDREJ ERNST   +2 more
doaj   +1 more source

Insight into tube-building behaviour and palaeoecology of some agglutinating worms from the Upper Devonian of Nevada, USA [PDF]

open access: yes, 2015
Agglutinated worm tubes from the Upper Devonian of the Devils Gate section in Nevada, USA are reported for the first time, filling a major gap in their Palaeozoic fossil record.
Bond, David P. G., Zatoń, Michał
core   +1 more source

LATE DEVONIAN CONODONTS FROM THE HOJEDK SECTION, KERMAN PROVINCE, SOUTHEASTERN IRAN

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2008
Conodonts (34 species and subspecies) from the Hojedk section north of Kerman span the late Givetian to early Famennian. The new data suggest that Devonian biostromes in central and eastern Iran were deposited on differing levels, and that the currently ...
HOSSEIN GHOLAMALIAN   +1 more
doaj   +1 more source

Late Devonian (Frasnian–Famennian) palynomorphs from the Padeha and Bahram Formations of Shahzadeh Mohammad section, northwest of Kerman, Iran

open access: yesActa Palaeobotanica, 2022
A diverse and well-preserved microphytoplankton assemblage is reported from a measured section of Frasnian–Famennian (Upper Devonian) Padeha and Bahram Formations in Shahzadeh Mohammad area, northwestern Kerman, southeast Iran. The palynoflora assemblage
Roghayeh Rouzegar, Péter Ozsvárt
doaj   +1 more source

Representatives of the family Actinostromatidae (Stromatoporoidea) in the Devonian of southern Poland and their ecological significance

open access: yesGeologos, 2016
Stromatoporoids of the family Actinostromatidae are common constituents of Givetian to Frasnian (Devonian) organic buildups. The species-level structure of actinostromatid assemblages from the Devonian of southern Poland is described in the present paper,
Wolniewicz Paweł
doaj   +1 more source

Large igneous provinces and mass extinctions: an update [PDF]

open access: yes, 2014
The temporal link between mass extinctions and large igneous provinces is well known. Here, we examine this link by focusing on the potential climatic effects of large igneous province eruptions during several extinction crises that show the best ...
Bond, David P. G., Wignall, Paul B.
core   +1 more source

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