Results 171 to 180 of about 2,343 (186)
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Characteristics of the reparative regeneration of fins in the polypterid fish (Polypteridae, Actinopterygii)

Russian Journal of Developmental Biology, 2012
Epimorphic regeneration of fins was studied in different ray-finned fishes (Actinopterygii), but species representing the phylogenetically basal lineages of the taxon have remained outside the attention of researchers. Information on the regenerative abilities of these groups is important both for understanding the evolutionary origins of the ...
A. I. Nikiforova, V. A. Golichenkov
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Palaeobiogeography of Cretaceous bony fishes (Actinistia, Dipnoi and Actinopterygii) [PDF]

open access: possibleGeological Society, London, Special Publications, 2008
Abstract Dispersal and vicariant patterns have been used as opposite concepts to explain biogeographical histories of organisms. Vicariance has been preferred to dispersal: the former is said to be falsifiable while the latter is regarded as a contingent hypothesis.
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The Genus Polypterus (Bichirs): A Fish Group Diverged at the Stem of Ray-Finned Fishes (Actinopterygii)

Cold Spring Harbor Protocols, 2009
INTRODUCTIONAxis and germ-layer formations are central issues in vertebrate embryology that can be examined in the zebrafish, Xenopus, chick, and mouse. An intriguing question is how the mechanisms that existed in an ancestral vertebrate have been modified during vertebrate evolution.
Masaki Takeuchi   +2 more
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Isozymes of glucosephosphate isomerase (PGI) in fishes of the subclass actinopterygii

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1986
A compilation of the species of fishes of the subclass Actinopterygii for the study of the PGI isozyme system is given. PGI appears to be codified by more than one locus in fishes; 65% of the species analysed here have two loci for PGI. PGI duplication in fishes and the relationship of isozymes of PGI with temperature and metabolism are discussed.
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An offshore fish assemblage (Elasmobranchii, Actinopterygii) from the Late Jurassic of NE Spain

Paläontologische Zeitschrift, 2012
Bulk sampling of late Oxfordian and early Kimmeridgian sediments of the Sot de Chera Formation near the Village of Moneva in the Aragonese Branch of the Iberian Ranges (NE Spain) yielded a low-diversity fauna of sharks (Synechodus ungeri, Phorcynis sp. cf. P.
Klug, Stefanie, Kriwet, Jurgen
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The Jurassic and Cretaceous bony fish record (Actinopterygii, Dipnoi) from Thailand

Geological Society, London, Special Publications, 2009
Abstract This first overview of the bony fish record from the Jurassic and Cretaceous continental deposits of Thailand reveals a significant diversity, with 16 taxa in four formations (the Khlong Min, Phu Kradung, Sao Khua and Khok Kruat Fms).
Cavin Lionel   +2 more
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Morphology, taxonomy, and phylogeny of Triassic pholidophorid fishes (Actinopterygii, Teleostei)

Journal of Vertebrate Paleontology, 2013
ABSTRACT This study presents the first comprehensive revision of ‘pholidophoriform’ fishes, which are a key taxon for understanding the early diversification of teleost fish. Systematic revisions of Triassic pholidophorids, which are based on numerous well-preserved specimens, include †Annaichthys, gen. et sp. nov., †Knerichthys, gen.
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Fishes (Elasmobranchii and Actinopterygii) of Picãozinho reef, Northeastern Brazil, with notes on their conservation status

Zootaxa, 2007
Shallow reefs on the northeastern coast of Brazil are rich, productive and diverse environments, with great ecological and economical importance. Picãozinho is located 1,500 m off the coast of João Pessoa city, Paraíba state, NE Brazil. The aim of this work is to provide an updated list of the reef fishes of Picãozinho, based on a survey of ...
De Souza, Allan T.   +5 more
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Comparative Analysis of the Organization of the Catecholaminergic Systems in the Brain of Holostean Fishes (Actinopterygii/Neopterygii)

Brain, Behavior and Evolution, 2019
Living holosteans, comprising 8 species of bowfins and gars, form a small monophyletic group of actinopterygian fishes, which are currently considered as the sister group to the enormously numerous teleosts and have largely been neglected in neuroanatomical studies.
Daniel Lozano   +3 more
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Polymeric immunoglobulin receptor (pIgR) in ray-finned fish (Actinopterygii)

Fish & Shellfish Immunology, 2023
Michał Stosik   +2 more
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