Results 21 to 30 of about 6,708 (227)

Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA

open access: yesEuropean Journal of Taxonomy, 2021
Middle Permian (Guadalupian) ostracods are described from the Williams Ranch Member of the Cutoff Formation (Roadian) and the McKittrick Canyon Member of the Bell Canyon Formation (Capitanian) from two sections exposed in Culberson County, Guadalupe ...
Anaëlle Tarnac   +4 more
doaj   +1 more source

Ostracods of the Ordovician–Silurian boundary beds: Jūrmala core (Latvia) and its implications for Baltic stratigraphy [PDF]

open access: yesEstonian Journal of Earth Sciences, 2020
Ostracods of the Ordovician and Silurian transition interval in the Jūrmala section, Latvia, were studied. The diverse pre-Hirnantian ostracod assemblage is replaced by the Harpabollia harparum association that has been recorded across the Baltoscandian
Tõnu Meidla   +3 more
doaj   +1 more source

Mid-Late Quaternary Fluvial Archives near the Margin of the MIS 12 Glaciation in Southern East Anglia, UK: Amalgamation of Multi-Disciplinary and Citizen-Science Data Sources

open access: yesQuaternary, 2022
This paper presents an updated geological reconstruction of the Quaternary evolution of the River Thames at its downstream extremities, close to the North Sea coast, based on new data from multi-disciplinary and citizen-science sources. In this area, the
Peter Allen   +23 more
doaj   +1 more source

The Evolution of an Ancient Coastal Lake (Lerna, Peloponnese, Greece)

open access: yesQuaternary, 2022
Degradation of coastal environments is an issue that many areas in Europe are facing. In the present work, an ancient coastal lake wetland is investigated, the so-called Lake Lerna in NE Peloponnese, Greece. The area hosted early agricultural populations
Efterpi Koskeridou   +10 more
doaj   +1 more source

A review of rice field ostracods (Crustacea) with a checklist of species

open access: yesJournal of Limnology, 2017
Ostracods are very common in rice fields and they can have a significant influence on the rice field ecosystem. They can reach very high densities, often higher than other meiofauna, and their activities can have both positive and negative effects on ...
Robin J. Smith   +4 more
doaj   +1 more source

Ostracod Response to a Major Middle Jurassic Sea-Level Fall: A Case Study from Southern Tunisia (North Gondwana) with Implications on Regional Stratigraphy and Palaeoenvironmental Reconstruction

open access: yesGeosciences, 2022
Marginal-marine to non-marine ostracod assemblages from the Bajocian (Mid-Jurassic) of southern Tunisia, precisely from the Krachoua Formation at the Kef El Anneba section near the Beni Kheddache area, are here described and tested for their utility to ...
Khaled Trabelsi   +9 more
doaj   +1 more source

Microfossils in the Ordovician erratic boulders from Southwestern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1995
Chitinozoans, ostracods and acritarchs found in four glacially transported limestone boulders from the south-western coast of Finland have been studied in order to test the usefulness of these microfossil groups in age determinations. Also rare specimens
J. Nõlvak, T. Meidla, A. Uutela
doaj   +1 more source

Late Pleistocene–Holocene Palaeoenvironmental Evolution of the Makgadikgadi Basin, Central Kalahari, Botswana: New Evidence From Shallow Sediments and Ostracod Fauna

open access: yesFrontiers in Ecology and Evolution, 2022
The Makgadikgadi Basin in Botswana hosts a system of salt lakes, which developed from the Upper Pleistocene onward due to the gradual shrinking of the giant Lake Palaeo-Makgadikgadi. Stratigraphic and palaeoclimatic studies of this area are difficult due
Fulvio Franchi   +9 more
doaj   +1 more source

Improvement of the description of ostracods of the family TRACHYLEBERIDINAE

open access: yesВісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. Екологія, 2023
Introduction. The definition of criteria for separating closely related species of representatives of the genus Cythereis is currently incomplete. Ostracods of this genus have wide intraspecific variability and high adaptability to changing living ...
Vitalii Syniehubka
doaj   +1 more source

Ostracods (Crustacea) associated with microbialites across the Permian-Triassic boundary in Dajiang (Guizhou Province, South China)

open access: yes, 2012
26 samples were processed for a taxonomic study of ostracods from the Upper Permian (Changhsingian) - Lower Triassic (Griesbachian) interval of the Dajiang section, Guizhou Province, South China. 112 species belonging to 27 genera are recognized.
Marie-Beatrice FOREL   +2 more
core   +1 more source

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