Results 21 to 30 of about 1,575 (199)

150 million years of freshwater fish biogeography: vicariance or dispersal? [PDF]

open access: yesResearch & Knowledge, 2017
Freshwater fishes are supposedly good case studies to test palaeobiogeographical models because they are attached to land masses, at least primary freshwater fishes, which are unable to cross marine barriers.
Lionel Cavin
doaj   +1 more source

Coelacanths from the Middle Triassic of Switzerland and the pace of actinistian evolution [PDF]

open access: yesResearch & Knowledge, 2017
Latimeria chalumnae (Actinistia) was regarded as the ‘ancestor of the four-legged vertebrates’ and rapidly became the iconic example of a ‘living fossil’.
Christophe Ferrante   +3 more
doaj   +1 more source

The timing of Timezyme diversification in vertebrates. [PDF]

open access: yesPLoS ONE, 2014
All biological functions in vertebrates are synchronized with daily and seasonal changes in the environment by the time keeping hormone melatonin. Its nocturnal surge is primarily due to the rhythmic activity of the arylalkylamine N-acetyl transferase ...
Damien Cazaméa-Catalan   +3 more
doaj   +1 more source

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

Mandibular musculature constrains brain–endocast disparity between sarcopterygians

open access: yesRoyal Society Open Science, 2020
The transition from water to land by the earliest tetrapods in the Devonian Period is seen as one of the greatest steps in evolution. However, little is understood concerning changes in brain morphology over this transition.
T. J. Challands   +2 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

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

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

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

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