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   Articles with "late ordovician" as a keyword



Mid–Late Ordovician tetradiid–calcimicrobial–cement reef: A new, peculiar reef-building consortium recording global cooling

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recommendations! Published in 2021 at "Global and Planetary Change"

DOI: 10.1016/j.gloplacha.2021.103462

Abstract: Abstract Skeletal–microbial–cement reefs are a triple hybrid carbonate that mainly formed during the Pennsylvanian to Mid-Triassic, when a marked increase in microbial carbonate formation coincided with extensive precipitation of crystalline crusts on the seafloor. We… read more here.

Keywords: reef building; late ordovician; mid; cement reef ... See more keywords

Euxinia caused the Late Ordovician extinction: Evidence from pyrite morphology and pyritic sulfur isotopic composition in the Yangtze area, South China

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recommendations! Published in 2018 at "Palaeogeography, Palaeoclimatology, Palaeoecology"

DOI: 10.1016/j.palaeo.2017.11.033

Abstract: Abstract The Late Ordovician mass extinction (LOME) was a severe biocrisis during the Phanerozoic and in this extinction, trilobites, brachiopods, mollusks, graptolites, conodonts and other types suffered severe mortality, and 85% of marine invertebrate species… read more here.

Keywords: late ordovician; pyritic sulfur; morphology pyritic; sulfur isotopic ... See more keywords

Climatic and oceanic changes during the Middle-Late Ordovician transition in the Tarim Basin, NW China and implications for the Great Ordovician Biodiversification Event

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recommendations! Published in 2019 at "Palaeogeography, Palaeoclimatology, Palaeoecology"

DOI: 10.1016/j.palaeo.2018.10.032

Abstract: Abstract The Middle-Late Ordovician transition (Darriwilian to Sandbian Age) witnessed a major pulse of the Great Ordovician Biodiversification Event (GOBE) and distinctive oceanic geochemical fluctuations, such as coeval negative C and Sr isotope excursions. In… read more here.

Keywords: middle late; late ordovician; ordovician biodiversification; ordovician transition ... See more keywords
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Edrioasteroids on corals: Taphonomic feedback and sedimentary processes control the ecology of a Late Ordovician (Katian: Cincinnatian, Richmondian) community in central Kentucky, USA

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recommendations! Published in 2020 at "Palaeogeography, Palaeoclimatology, Palaeoecology"

DOI: 10.1016/j.palaeo.2019.109447

Abstract: Abstract Communities of organisms that encrusted hardgrounds and skeletal material developed and became widespread during the Great Ordovician Biodiversification Event, and this community structure was a well-established part of the marine ecosystem by the Late… read more here.

Keywords: late ordovician; community; ordovician katian; taphonomic feedback ... See more keywords
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Spatiotemporal variations of sedimentary carbon and nitrogen isotopic compositions in the Yangtze Shelf Sea across the Ordovician-Silurian boundary

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recommendations! Published in 2021 at "Palaeogeography, Palaeoclimatology, Palaeoecology"

DOI: 10.1016/j.palaeo.2021.110257

Abstract: Abstract The Hirnantian Glaciation resulted in a perturbation in global carbon cycling, which is recognized as a positive excursion in the δ13C values of both carbonates and organic matter. To investigate the factors controlling the… read more here.

Keywords: late ordovician; isotopic; carbon nitrogen; carbon ... See more keywords
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Crouching shells, hidden sponges: Unusual Late Ordovician cavities containing sponges

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recommendations! Published in 2017 at "Sedimentary Geology"

DOI: 10.1016/j.sedgeo.2016.11.003

Abstract: Abstract Marine cavities harbouring cryptic organisms have been ubiquitous throughout the Phanerozoic. However, our knowledge of early cryptic communities is as yet insufficient, and how metazoans began to utilize such habitats remains unknown. In this… read more here.

Keywords: sponges unusual; late ordovician; shells hidden; hidden sponges ... See more keywords

A new post-LOME (Late Ordovician Mass Extinction) recovery brachiopod fauna from South China

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recommendations! Published in 2024 at "Journal of Paleontology"

DOI: 10.1017/jpa.2024.14

Abstract: Non-technical Summary. The Late Ordovician Mass Extinction event (roughly 445 million years ago), one of the big five major extinctions, is characterized by a glacial phase followed by a post-glacial warmer phase. Faunas of brachiopods… read more here.

Keywords: brachiopod; fauna; recovery; mass extinction ... See more keywords

Competition or coexistence? Ecology and niche partitioning of pelmatozoan echinoderms from the Late Ordovician Bromide Formation (Oklahoma, USA)

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recommendations! Published in 2025 at "Journal of Paleontology"

DOI: 10.1017/jpa.2025.10137

Abstract: Abstract Pelmatozoa is an informal grouping of filter-feeding echinoderms including crinoids, paracrinoids, rhombiferans, and eocrinoids that possess a theca, an erect stalk, and feeding appendages. Although crinoids were major constituents of marine communities with high… read more here.

Keywords: pelmatozoan; competition; niche; late ordovician ... See more keywords

Abrupt global-ocean anoxia during the Late Ordovician–early Silurian detected using uranium isotopes of marine carbonates

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recommendations! Published in 2018 at "Proceedings of the National Academy of Sciences of the United States of America"

DOI: 10.1073/pnas.1802438115

Abstract: Significance The Late Ordovician mass extinction (LOME) terminated one of the greatest biodiversity radiations in Earth history eliminating ∼85% of marine animals, and it is coincident with the first major glaciation of the Phanerozoic. To… read more here.

Keywords: ocean; late ordovician; global ocean; early silurian ... See more keywords

Late Ordovician high-Mg adakitic andesite in the western South China block: evidence of oceanic subduction

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recommendations! Published in 2018 at "International Geology Review"

DOI: 10.1080/00206814.2017.1370617

Abstract: ABSTRACT The Early Palaeozoic was an important period in the geologic evolution of the South China block (SCB), marking the intracontinental orogen in the Wuyi-Yunkai region. One salient feature of the western SCB is the… read more here.

Keywords: late ordovician; south china; china block; oceanic subduction ... See more keywords

Dwarf cornulitid tubeworms from the Hirnantian (Late Ordovician) of Estonia

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recommendations! Published in 2024 at "Historical Biology"

DOI: 10.1080/08912963.2024.2318796

Abstract: ABSTRACT Four species of Conchicolites and two species of Cornulites occur in the Hirnantian of Estonia. Two new cornulitids Conchicolites corbalengus sp. nov. and Cornulites levigatus sp. nov. have been described from the Siuge Member.… read more here.

Keywords: cornulitid tubeworms; estonia; late ordovician; dwarf cornulitid ... See more keywords