Results 51 to 60 of about 1,129 (198)

Ordovician plate tectonic and paleogeographic maps

open access: yes, 2023
Atlas of Ordovician plate tectonic and paleogeographic maps (Katian, 450 Ma)
Christopher R. Scotese (6998246)
core   +1 more source

New Katian bivalves from the Upper Ordovician Xiazhen Formation, Jiangxi Province, China

open access: yesActa Palaeontologica Polonica
A bivalve association reported herein was recently discovered from the Xiazhen Formation (upper Katian, Upper Ordovician) at Zhuzhai, southern Yushan County, northeastern Jiangxi Province, East China.
Yong Wang, Ren-Bin Zhan, Zong-Jie Fang
doaj   +1 more source

A new Byronia species from the Late Ordovician of Estonia [PDF]

open access: yesEstonian Journal of Earth Sciences, 2016
A new species of a possible thecate scyphozoan Byronia jaegeri sp. nov. is described from the late Katian of Estonia. This new taxon is distinct as it lacks the longitudinal ornamentation present in other Byronia species.
Olev Vinn   +3 more
doaj   +1 more source

Cyclic late Katian through Hirnantian glacioeustasy and its controls on the development of the organic-rich shale, South China

open access: yes, 2019
Suppliments for paper "Cyclic late Katian through Hirnantian glacioeustasy and its controls on the development of the organic-rich shale, South ...
Lu, Y (via Mendeley Data), Lu, Yangbo
core   +1 more source

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

open access: yesЛитосфера, 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

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

open access: yesEstonian 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   +2 more
doaj   +1 more source

The only known cyclopygid–‘atheloptic’ trilobite fauna from North America: the upper Ordovician fauna of the Pyle Mountain Argillite and its palaeoenvironmental significance [PDF]

open access: yes, 2012
The trilobite fauna of the upper Ordovician (middle Katian) Pyle Mountain Argillite comprises a mixture of abundant mesopelagic cyclopygids and other pelagic taxa and a benthic fauna dominated by trilobites lacking eyes.
Bruton, D.L.   +3 more
core   +1 more source

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

open access: yesEuropean 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

A new pteraspidomorph from the Nibil Formation (Katian, Late Ordovician) of the Canning Basin, Western Australia

open access: yes, 2013
Based upon fragmentary remains of dermal armor, a new form of arandaspid fish, Ritchieichthys nibili, gen et. sp. nov., is described from subsurface core material from the Katian (Late Ordovician) Nibil Formation of the Canning Basin, Western Australia ...
Sansom, Ivan; id_orcid   +3 more
core   +1 more source

Recognition of fossil keratose sponges in carbonates using petrographic and machine‐learning classification

open access: yesSedimentology, Volume 73, Issue 6, Page 2246-2280, October 2026.
ABSTRACT Filamentous, anastomosing spar‐filled networks in Phanerozoic carbonates have been interpreted as the mineralised remains of keratose (non‐spiculate) sponges, yet their recognition remains contested because fabrics of broadly similar appearance may arise from microbial, diagenetic or physical processes. This study combines direct fossil–modern
Jeong‐Hyun Lee   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy