Results 51 to 60 of about 1,784 (228)

Discovery of trimerellide brachiopod Gasconsia from the Ordovician of Estonia [PDF]

open access: yesEstonian Journal of Earth Sciences
In this study, the first trimerellide brachiopods from Estonia are described. They occur in the uppermost Katian (Upper Ordovician) shallow shelf environments and represent some of the largest Ordovician brachiopods.
Linda Hints, Jiayu Rong
doaj   +1 more source

Allogenic succession in Late Ordovician reefs from southeast China: a response to the Cathaysian orogeny [PDF]

open access: yesEstonian Journal of Earth Sciences, 2015
Several Late Ordovician (late Katian) reef complexes are known from the border area of Jiangxi and Zhejiang provinces in southeast China. We studied two coral–stromatoporoid reefs exposed in the Xiazhen Formation at Zhuzhai (Yushan, Jiangxi).
Qijian Li, Yue Li, Wolfgang Kiessling
doaj   +1 more source

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

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

Katian volcanism in Central Armorican Domain (France) and Central Iberian Zone (Portugal): a single monogenetic basaltic field? [PDF]

open access: yes, 2022
The Crozon peninsula and Buçaco syncline belong respectively to the Central Armorican Domain (CAD) and the Central Iberian Zone (CIZ), located on both sides of the Variscan “Ibero-Armorican Arc” structure at present.
Martial Caroff, Caroff, Martial
core   +1 more source

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

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)
core   +1 more source

Ordovician climate changes in the northern subtropics: The δ18O record from the Tunguska Basin, Siberia [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Oxygen isotopes from bioapatite (conodonts) have been used for several decades to reconstruct the Palaeozoic climate history. During the Ordovician, conodont-based δ18Ophos studies have revealed a general cooling trend throughout the system.
Peep Männik   +2 more
doaj   +1 more source

Late Ordovician (Katian) spores in Sweden: oldest land plant remains from Baltica [PDF]

open access: yes, 2014
A palynological study of the Ordovician–Silurian boundary (Katian–Rhuddanian) succession in the Röstaånga-1 drillcore, southern Sweden, has been performed.
BADAWY, AHMED SALAH   +6 more
core   +2 more sources

Late Ordovician jawed polychaete fauna from the Spiti Valley, northern India [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
The final part of the Ordovician Period was characterised by major perturbations in climate, environments and ecosystems, as proved by numerous studies. These changes resulted in one of the biggest extinctions in Earth’s history. Most research in early
Petra Tonarová   +3 more
doaj   +1 more source

Palaeoecology and palaeogeography of Late Ordovician (Katian–Hirnantian) cephalopods of the Boda Limestone, Siljan district, Sweden [PDF]

open access: yes, 2014
The carbonates associated with the Late Ordovician (Katian–Hirnantian) Boda mounds of the Siljan district, Sweden, contain a rich cephalopod fauna.
Jan Ove R. Ebbestad   +3 more
core   +1 more source

Late Ordovician (Katian) graptolites and shelly fauna from the Phu Ngu Formation, north-east Vietnam [PDF]

open access: yes, 2021
Two new graptolite assemblages are identified from discrete intervals within the Phu Ngu Formation, Na Ri District, Bac Kan Province, north-east Vietnam. The graptolites occur in laminated mud/siltstones thought to be distal turbidite deposits.
Williams, Mark   +11 more
core   +3 more sources

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