Results 31 to 40 of about 1,129 (198)

Early Katian, Late Ordovician, heliolitine corals from southern Kuruktag in northeastern Tarim Basin of China

Acta Palaeontologica Polonica, 2023
Heliolitines are a major tabulate coral group, which experienced their early diversification in the Katian (Late Ordovician). Fossils of this group are well represented in the Kuruktag area of northeastern Tarim Basin, Northwest China, but detailed ...
YU-NONG CUI, GUANG-XU WANG
doaj   +1 more source

Global palaeogeographical implication of acritarchs in the Upper Ordovician [PDF]

Estonian Journal of Earth Sciences, 2023
The Early–Middle Ordovician peri-Gondwana and Baltica acritarch provinces are easily recognizable, illustrating a clear provincialism of global phytoplankton.
Yan Kui, Thomas Servais, Huang Bin, Li Jun, Shan Longlong   +4 more
doaj   +1 more source

A multiproxy study of the Puhmu core section (Estonia, Upper Ordovician): consequences for stratigraphy and environmental interpretation [PDF]

Estonian Journal of Earth Sciences, 2017
A multiproxy study of the Katian and Hirnantian in the Puhmu core in NE Estonia resulted in new data on chitinozoan and brachiopod biostratigraphy. Some mass occurrences of dasycladacean algae are tied to small early Katian ‘reefs’.
Dimitri Kaljo, Linda Hints, Tõnu Martma, Jaak Nõlvak   +3 more
doaj   +1 more source

Subway into the Ordovician (Prague Basin, Czech Republic) [PDF]

Estonian Journal of Earth Sciences, 2023
In the Late Ordovician, the Prague Basin was located at the high-latitude northwestern shelf of Gondwana. This period was characterised by profound environmental changes and ended by one of the most severe mass extinctions, which was caused by climatic ...
Jana Bruthansová, Petr Kraft, Jiří Bruthans   +2 more
doaj   +1 more source

Age of the Ordovician sedimentary succession in Lumparn Bay, Åland Islands, Finland [PDF]

Estonian Journal of Earth Sciences, 2023
Depression of the ancient Lumparn meteorite impact structure in the Åland Islands is partly infilled with the lower Palaeozoic sediments, lying presently below sea level. The Cambrian and Ordovician sedimentary cover is distributed in the area of 15 km2,
Leho Ainsaar, Tõnu Meidla
doaj   +1 more source

City Rhythms: Urban Mobility Relations in Ho Chi Minh City

City &Society, Volume 35, Issue 2, Page 89-100, August 2023., 2023
Abstract Moving beyond a rhythmanalysis approach to banal mobilities and diurnal journey making – commuting, visiting, shopping, leisure – this paper explores how place‐dependent forms of transport shape the feel and flow of the city. Theorizing the city as polyrhythmic reveals multiple traces of local/global and past/present in the socio‐historically ...
Catherine Earl
wiley   +1 more source

Healed injuries, ontogeny and scleritome construction in a Late Ordovician machaeridian (Annelida, Aphroditiformia)

Papers in Palaeontology, Volume 9, Issue 4, July/August 2023., 2023
Abstract Machaeridians are armoured annelids that were morphologically diverse during the Palaeozoic. The scleritome developed from fleshy protrusions at the base of each parapodium, with alternating segments giving rise to differentiated inner and outer shell plates.
Luke A. Parry, Gregory D. Edgecombe, Jana Bruthansová, Jakob Vinther   +3 more
wiley   +1 more source

Putative hydroid symbionts recorded by bioclaustrations in fossil molluscan shells: a revision and reinterpretation of the cecidogenus Rodocanalis

Papers in Palaeontology, Volume 9, Issue 2, March/April 2023., 2023
Abstract The fossil record yields a peculiar phenomenon in different kinds of molluscan shells: bioclaustrations formed around (epi)symbionts during growth of the hosts' shell margin. Four morphologies, two of them formerly considered bioerosion traces, are here united in the parataxonomy of bioclaustration structures under the revised cecidogenus ...
Max Wisshak, Simon Schneider, Radek Mikuláš, Sebastián Richiano, Fran Ramil, Mark A. Wilson, Paul Taylor   +6 more
wiley   +1 more source

Palaeobiogeographical study of the Late Ordovician brachiopods of Iran based on quantitative analysis [PDF]

Journal of Stratigraphy and Sedimentology Researches
Brachiopods, as one of the most important benthic fauna in the Late Ordovician, show a great abundance and diversity in many continents.
Akbar Sohrabi
doaj   +1 more source

Fossilized soft tissues in Palaeozoic bryozoans

Papers in Palaeontology, Volume 9, Issue 1, January/February 2023., 2023
Abstract Thin sections of three Palaeozoic bryozoans reveal fossilized soft tissues that show the position of organic cuticle and internal structures such as the membranous sac and gut. The fossilization occurred apparently due to fast burial under anoxic conditions.
Andrej Ernst, Jeffrey Thompson
wiley   +1 more source