Results 31 to 40 of about 20,818 (273)

Actinopterygii

open access: yes, 2020
Key to species of fishes from the Coto River basin, Pacific coast, Costa Rica The following key is based on our research and data available in the literature (Bussing 1987, 1998, Angulo et al. 2015 and Robertson & Allen 2015). 1 Body asymmetrical, strongly compressed laterally; both eyes on the same side of head..............................
Angulo, Arturo   +4 more
openaire   +2 more sources

New Genus of the Actinopterygian Fishes (Eurynotoidiidae) from the Urzhumian of Republic of Tatarstan (Kluchevskoy Ovrag locality) [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Науки о Земле
New genus and species of eurynotoidiid actinopterygians (Eurynotoidiformes), Kluchevichthys praeclarus gen. et sp. nov., is described from the uppermost Urzhumian (Kluchevskoy Ovrag locality), Tetushi District, Republic of Tatarstan.
Minikh, Alla Vasilievna   +2 more
doaj   +1 more source

Differences in the trophic ecology of micronekton driven by diel vertical migration. [PDF]

open access: yes, 2019
Many species of micronekton perform diel vertical migrations (DVMs), which ultimately contributes to carbon export to the deep sea. However, not all micronekton species perform DVM, and the nonmigrators, which are often understudied, have different ...
Angel M. V.   +6 more
core   +1 more source

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

A reappraisal of the Italian record of the Cretaceous pachycormid fish Protosphyraena Leidy, 1857 [PDF]

open access: yes, 2017
The genus Protosphyraena is known mainly from partial remains, consisting of isolated blade-like teeth, conical rostra and scythe-like pectoral fins. This paper provides a new insight into partial specimens of the genus Protosphyraena from the Cretaceous
Amalfitano, Jacopo   +3 more
core   +3 more sources

Review of the genus Photoblepharon (Actinopterygii: Beryciformes: Anomalopidae) [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2019
The flashlight fishes of the genus Photoblepharon (Family: Anomalopidae) are herein reviewed, in order to clarify their taxonomy. The genus includes two species Photoblepharon palpebratum (Boddaert, 1781) from the eastern Indian Ocean and the western Pacific Ocean and Photoblepharon steinitzi Abe et Haneda, 1973 from the Red Sea, Oman, and western ...
Daniel Golani   +2 more
openaire   +3 more sources

The most complete amiid fish from the Coal Creek Member of the Eocene Kishenehn Formation in northwestern Montana

open access: yesActa Palaeontologica Polonica, 2022
The larger-bodied fish fauna of the Kishenehn Formation’s Coal Creek Member (Eocene, 43.5 Ma), northwestern Montana, is understudied because of a sampling bias towards small specimens. Small specimens (
JACOB D. GARDNER, MARK V.H. WILSON
doaj   +1 more source

A primitive actinopterygian braincase from the Tournaisian of Nova Scotia [PDF]

open access: yesRoyal Society Open Science, 2018
The vertebrate fossil record of the earliest Carboniferous is notoriously poorly sampled, obscuring a critical interval in vertebrate evolution and diversity.
Conrad D. Wilson   +2 more
doaj   +1 more source

A giant dapediid from the Late Triassic of Switzerland and insights into neopterygian phylogeny [PDF]

open access: yesRoyal Society Open Science, 2018
A new Triassic neopterygian is described on the basis of a large three-dimensional neurocranium from the Rhaetian (Late Triassic) of the Kössen Formation (Schesaplana, Grisons, Switzerland).
Ashley E. Latimer, Sam Giles
doaj   +1 more source

Phylogenetic analysis of the SAP30 family of transcriptional regulators reveals functional divergence in the domain that binds the nuclear matrix [PDF]

open access: yes, 2009
Background: Deacetylation of histones plays a fundamental role in gene silencing, and this is mediated by a corepressor complex containing Sin3 as an essential scaffold protein. In this report we examine the evolution of two proteins in this complex, the
Heinonen, TYK   +3 more
core   +3 more sources

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