Results 61 to 70 of about 1,800 (206)

The first hirnantian (Uppermost Ordovician) Odontopleurid trilobite from western Gondwana (Argentina) [PDF]

, 2014
An odontopleurid trilobite remain is described for the fi rst time from Hirnantian (uppermost Ordovician) rocks of Western Gondwana. Very rare material, represented by a single left librigena, comes from a new fossil locality of the Don Braulio Formation
Halpern, Karen, Meroi Arcerito, Facundo René, Rustán, Juan José   +2 more
core   +1 more source

The Digital Atlas of Ordovician Life: digitizing and mobilizing data for paleontologists and the public [PDF]

Estonian Journal of Earth Sciences, 2014
A new online resource, “The Digital Atlas of Ordovician Life: Exploring the Fauna of the Cincinnati Region” (www.OrdovicianAtlas.org), provides a tool for exploring the diversity, systematics, biogeography and stratigraphy of Late Ordovician fossils of ...
Alycia L. Stigall, Jennifer E. Bauer, Hannah-Maria R. Brame   +2 more
doaj   +1 more source

The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden

European Journal of Taxonomy, 2013
The late Katian, Late Ordovician Boda Limestone of Dalarna, Sweden contains a rich cephalopod assemblage. The assemblage consists of 61 species, of 31 genera, comprising almost all major Ordovician cephalopod orders.
Björn Kröger
doaj   +1 more source

The Upper Ordovician reef Bol’shaya Kos’yu, Ilych River, the Northern Urals (structure, paleobiocenosis, microfacies, model of formation)

Литосфера, 2020
Subject. The Upper Ordovician reef Bol’shaya Kos’yu, located on the western slope of the Northern Urals in the basin of the Ilych River is a unique object among coeval reefs due to the weak dolomitization of rocks and the ability to trace the phases of ...
L. A. Shmeleva
doaj   +1 more source

Conodonts in Ordovician biostratigraphy [PDF]

, 2017
The long time interval after Pander's (1856) original conodont study can in terms of Ordovician conodont biostratigraphical research be subdivided into three periods, namely the Pioneer Period (1856-1955), the Transition Period (1955-1971) and the Modern
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core   +1 more source

Upper Sandbian–lower Katian bio- and chemostratigraphy in the Pajevonys-13 core section, Lithuania [PDF]

Estonian Journal of Earth Sciences, 2016
The succession of five formations (Auleliai, Vilučiai, Alvitas, Šakiai, Jakšiai) corresponding to the upper Sandbian and lower Katian in southern Lithuania is dated based on new bio- and chemostratigraphical data from the Pajevonys-13 core section.
Linda Hints, Juozas Paškevičius, Tõnu Martma, Peep Männik, Jaak Nõlvak   +4 more
doaj   +1 more source

New Zealand Geological Timescale 2025

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
New Zealand Geological Timescale 2025 (NZGT 2025) is the first comprehensive update and revision of the New Zealand Geological Timescale in a decade. The criteria used to establish age ranges of New Zealand Stages within the NZGT have been reviewed, calibrated, and revised where required against the 2023/04 International Chronostratigraphic Chart and ...
Christopher D. Clowes, James S. Crampton, Kyle J. Bland, J. Ian Raine, Andrew F. Boyes, Hamish J. Campbell, Erica M. Crouch, Martin P. Crundwell, Neville Hudson, Elizabeth M. Kennedy, Donald A. B. MacFarlan, Hugh E. G. Morgans, Marcus D. Richards, Matthew W. Sagar   +13 more
wiley   +1 more source

Enhanced Continental Weathering Triggered the Anoxia of Seawater and Mass Extinctions During the Late Ordovician

Journal of Marine Science and Engineering
During the Late Ordovician period, changes in climate and mass extinctions were observed; however, the factors influencing these phenomena have not been fully understood.
Pan Tang, Xiangrong Yang, Detian Yan
doaj   +1 more source

A new glyptorthid species (Brachiopoda: Orthida) from the Upper Ordovician of Estonia [PDF]

Estonian Journal of Earth Sciences, 2010
A new glyptorthid brachiopod species Bassettella alata with surface pits and lamellose frills is described from the Upper Ordovician Haljala and Keila stages of northern Estonia.
Linda Hints
doaj   +1 more source

Front Cover and Publication Information [PDF]

, 2010
Front cover and publication information for this issue, including the table of ...

core   +1 more source