Results 191 to 200 of about 5,561 (227)
Some of the next articles are maybe not open access.
Polyubiquitin Insertions and the Phylogeny of Cercozoa and Rhizaria
Protist, 2005A single or double amino acid insertion at the monomer-monomer junction of the universal eukaryotic protein polyubiquitin is unique to Cercozoa and Foraminifera, closely related 'core' phyla in the protozoan infrakingdom Rhizaria. We screened 11 other candidate rhizarians for this insertion: Radiozoa (polycystine and acantharean radiolaria), a ...
Bass, David +7 more
openaire +2 more sources
2014
Phytomyxea comprises two orders: Plasmodiophorida and Phagomyxida. The group is characterized by a unique type of nuclear division, cruciform division, in which a persistent nucleolus aligns parallel to the spindle and perpendicularly to the metaphase plate of chromatin.
Simon Bulman, James P. Braselton
openaire +1 more source
Phytomyxea comprises two orders: Plasmodiophorida and Phagomyxida. The group is characterized by a unique type of nuclear division, cruciform division, in which a persistent nucleolus aligns parallel to the spindle and perpendicularly to the metaphase plate of chromatin.
Simon Bulman, James P. Braselton
openaire +1 more source
Three new species of Gromia (Protista, Rhizaria) identified from the Romanian Black Sea shelf.
European Journal of Protistology, 2023The protist genus Gromia was first described in 1835 by Dujardin and while gromiids are prominent in the marine environment, Gromia oviformis was, for a long time, the only valid species regularly recorded.
Sylvain Kreuter +4 more
semanticscholar +1 more source
Phylogenetic Revision of the Order Entactinaria—Paleozoic Relict Radiolaria (Rhizaria, SAR)
Protist, 2020Entactinaria, an order of Radiolaria, are defined by a specific skeletal structure called "initial spicular system (ISS)". The oldest entactinarians appeared in the Ordovician period, and the extant species are thought to have survived until today.
Nakamura, Yasuhide +4 more
openaire +2 more sources
European Journal of Protistology
Monothalamous (single-chambered) foraminifera are widespread in marine benthic environments and are also a common part of freshwater and soil microbial communities.
Maria Holzmann, F. Siemensma
semanticscholar +1 more source
Monothalamous (single-chambered) foraminifera are widespread in marine benthic environments and are also a common part of freshwater and soil microbial communities.
Maria Holzmann, F. Siemensma
semanticscholar +1 more source
Putative sponge biomarkers in unicellular Rhizaria question an early rise of animals
Nature Ecology & Evolution, 2019 The dawn of animals remains one of the most mysterious milestones in the evolution of life. The fossil lipids 24-isopropylcholestane and 26-methylstigmastane are considered diagnostic for demosponges-arguably the oldest group of living animals. The widespread occurrence and high relative abundance of these biomarkers in Ediacaran sediments from 635-541
B. Nettersheim +16 more
semanticscholar +8 more sources
European Journal of Protistology
Non-marine foraminifera are among the least-studied groups of protists due to their low population densities, patchy distribution, and spatiotemporal variability.
Najla Baković +2 more
semanticscholar +1 more source
Non-marine foraminifera are among the least-studied groups of protists due to their low population densities, patchy distribution, and spatiotemporal variability.
Najla Baković +2 more
semanticscholar +1 more source
Marine Ecology
Cyclammina cancellata is a common benthic foraminifer found at bathyal depths across the world's oceans. Despite its important role in deep‐sea food webs and biogeochemical cycles, the feeding habits of this species remain poorly understood.
H. Nomaki +4 more
semanticscholar +1 more source
Cyclammina cancellata is a common benthic foraminifer found at bathyal depths across the world's oceans. Despite its important role in deep‐sea food webs and biogeochemical cycles, the feeding habits of this species remain poorly understood.
H. Nomaki +4 more
semanticscholar +1 more source
Deep relationships of Rhizaria revealed by phylogenomics: A farewell to Haeckel’s Radiolaria
Molecular Phylogenetics and Evolution, 2013Rhizaria is one of the six supergroups of eukaryotes, which comprise the majority of amoeboid and skeleton-building protists living in freshwater and marine ecosystems. There is an overall lack of molecular data for the group and therefore the deep phylogeny of rhizarians is unresolved.
Sierra, Roberto +7 more
openaire +2 more sources
Journal of Paleontology
Non-technical Summary. Diverse and well-preserved radiolarians (siliceous planktonic microfossils) have been recovered from middle Eocene sediment cores drilled at Blake Nose, a submarine promontory in the western North Atlantic Ocean.
Mathias Meunier, T. Danelian
semanticscholar +1 more source
Non-technical Summary. Diverse and well-preserved radiolarians (siliceous planktonic microfossils) have been recovered from middle Eocene sediment cores drilled at Blake Nose, a submarine promontory in the western North Atlantic Ocean.
Mathias Meunier, T. Danelian
semanticscholar +1 more source