Results 21 to 30 of about 1,320 (212)

Brain Reconstruction Across the Fish-Tetrapod Transition; Insights From Modern Amphibians

open access: yesFrontiers in Ecology and Evolution, 2021
The fish-tetrapod transition (which incorporates the related fin-limb and water-land transitions) is celebrated as one of the most important junctions in vertebrate evolution.
Alice M. Clement   +4 more
doaj   +1 more source

A Comparison of the Innate and Adaptive Immune Systems in Cartilaginous Fish, Ray-Finned Fish, and Lobe-Finned Fish

open access: yesFrontiers in Immunology, 2019
The immune system is composed of two subsystems—the innate immune system and the adaptive immune system. The innate immune system is the first to respond to pathogens and does not retain memory of previous responses.
Nicole C. Smith   +2 more
doaj   +1 more source

The hyomandibulae of rhizodontids (Sarcopterygii, stem‐tetrapoda)

open access: yesJournal of Morphology, 2008
AbstractDespite its important role in the study of the evolution of tetrapods, the hyomandibular bone (the homologue of the stapes in crown‐group tetrapods) is known for only a few of the fish‐like members of the tetrapod stem‐group. The best‐known example, that of the tristichopterid Eusthenopteron, has been used as an exemplar of fish‐like stem ...
Martin D, Brazeau, Jonathan E, Jeffery
  +5 more sources

Prioritizing the reassessment of data‐deficient species on the IUCN Red List

open access: yesConservation Biology, Volume 37, Issue 6, December 2023., 2023
Abstract Despite being central to the implementation of conservation policies, the usefulness of the International Union for Conservation of Nature (IUCN) Red List of Threatened Species is hampered by the 14% of species classified as data‐deficient (DD) because information to evaluate these species’ extinction risk was lacking when they were last ...
Victor Cazalis   +19 more
wiley   +1 more source

Rhipidistians (Sarcopterygii) from the Hunter Siltstone (Late Famennian) near Grenfell, NSW, Australia [PDF]

open access: yesFossil Record, 2000
Rhipidistian sarcopterygian fishes (Dipnomorpha + Tetrapodomorpha) are well represented in the upper levels of the Hunter Siltstone (latest Famennian) near Grenfell. New South Wales (NSW), Australia.
Z. Johanson, A. Ritchie
doaj   +5 more sources

Conservation of Intronic Sequences in Vertebrate Mitochondrial Solute Carrier Genes (Zebrafish, Chicken, Mouse and Human)

open access: yesNon-Coding RNA, 2019
The conservation of intronic sequences was studied in the mitochondrial solute carrier (SLC25A*) genes of Zebrafish, Chicken, Mouse and Human. These genes are homologous and the coding sequences have been well conserved throughout Vertebrates, but the ...
Rosa Calvello   +4 more
doaj   +1 more source

The cranial endocast of the Upper Devonian dipnoan ‘Chirodipterus’ australis [PDF]

open access: yesPeerJ, 2018
One of the first endocasts of a dipnoan (lungfish) to be realised was that of the Upper Devonian taxon Chirodipterus australis. This early interpretation was based on observations of the shape of the cranial cavity alone and was not based on a natural ...
Struan A.C. Henderson, Tom J. Challands
doaj   +2 more sources

The first Jurassic coelacanth from Switzerland

open access: yesSwiss Journal of Palaeontology, 2022
Coelacanths form a clade of sarcopterygian fish represented today by a single genus, Latimeria. The fossil record of the group, which dates back to the Early Devonian, is sparse.
Christophe Ferrante   +2 more
doaj   +1 more source

Data from the ichthyological collection of the Museu Paraense Emílio Goeldi

open access: yesZooKeys, 2017
This dataset contains information on the occurrence of Neotropical fishes (Actinopterygii, Chondrichthyes, Sarcopterygii) collected in South America, mostly from the Brazilian Amazon. The ichthyology collections of the Museu Paraense Emílio Goeldi (MPEG:
Timóteo Monteiro da Silva   +5 more
doaj   +3 more sources

Confocal Characterization of Intestinal Dendritic Cells from Myxines to Teleosts

open access: yesBiology, 2022
Dendritic cells (DCs) are antigen-presenting cells (APCs) that regulate the beginning of adaptive immune responses. The mechanisms of tolerance to antigens moving through the digestive tract are known to be regulated by intestinal DCs.
Alessio Alesci   +9 more
doaj   +1 more source

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