Results 41 to 50 of about 3,037 (183)

The oldest ascocerid cephalopod from the Silurian of Estonia and notes on the biogeography of the order Ascocerida (class Cephalopoda) [PDF]

open access: yesEstonian Journal of Earth Sciences, 2016
The early Palaeozoic order Ascocerida is a group of morphologically unique and rare cephalopods known from the Ordovician and Silurian rocks of Avalonia, Baltica, Laurentia and Perunica.
Martina Aubrechtova, Tõnu Meidla
doaj   +1 more source

The trace fossil Zoophycos from the Silurian of Estonia [PDF]

open access: yesEstonian Journal of Earth Sciences, 2015
Trace fossils of the ichnogenus Zoophycos have been described for the first time from the Silurian of Baltica. They occur in Llandovery pure limestones of middle Estonia and in Ludfordian argillaceous limestones and early Pridoli crinoid grainstones of ...
Olev Vinn, Ursula Toom
doaj   +1 more source

A Silurian sea spider

open access: yesNature, 2004
Pycnogonids (sea spiders) are marine arthropods numbering some 1,160 extant species. They are globally distributed in depths of up to 6,000 metres, and locally abundant; however, their typically delicate form and non-biomineralized cuticle has resulted in an extremely sparse fossil record that is not accepted universally.
Siveter, Derek J.   +3 more
openaire   +4 more sources

An updated correlation of the Silurian strata in Estonia [PDF]

open access: yesEstonian Journal of Earth Sciences
The correlation of the Silurian succession of Estonia with the global standard has long been considered reliable. However, new information, particularly on the distribution of microfossils, has changed our understanding of the Silurian stratigraphy in ...
Peep Männik, Tõnu Meidla, Olle Hints
doaj   +1 more source

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

open access: yesGeological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid   +9 more
wiley   +1 more source

Features of facies of reefs of the silurian age of Volyn-Podillia

open access: yesМінеральні ресурси України, 2021
On the territory of Volyn-Podillya Silurian deposits are represented by thick strata of terrigenous and carbonate deposits, they are mainly represented by marls, argillites, limestones, dolomites, etc.
T. V. Sushko
doaj   +1 more source

Folklore Studies, Fieldwork and the Making of a Domestic Anthropology in Fin‐de‐Siècle Britain

open access: yesHistory, EarlyView.
Abstract This article follows the ‘communities of knowledge‐making’ that formed around folklore collection at the end of the nineteenth century. Often regarded as eccentric or marginal figures in the history of human science, these collectors in fact engaged in lively and sophisticated discussions about the methodologies needed to study the mental ...
HARRY PARKER
wiley   +1 more source

A summary and revision of the East Baltic Silurian chitinozoan biozonation [PDF]

open access: yesEstonian Journal of Earth Sciences, 2012
The biostratigraphical data on the East Baltic Silurian chitinozoans are summarized. Based on the study of nine East Baltic drill cores, 28 regional chitinozoan zonal units, including 26 biozones and 2 interzones, are briefly characterized. In comparison
Viiu Nestor
doaj   +1 more source

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