Results 171 to 180 of about 5,493 (196)
Some of the next articles are maybe not open access.
Journal of Morphology, 1986
Problems surrounding the relationships of lungfishes are intricately connected with the search for the origin of tetrapods. Early in the history of lungfish research, the emphasis was on attempts to determine whether lungfishes were more closely related to fishes or to tetrapods.
openaire +1 more source
Problems surrounding the relationships of lungfishes are intricately connected with the search for the origin of tetrapods. Early in the history of lungfish research, the emphasis was on attempts to determine whether lungfishes were more closely related to fishes or to tetrapods.
openaire +1 more source
Current Biology
Alice Clement introduces the lungfishes, a group of sarcopterygian fishes that uses lungs to breathe and is the living sister group to tetrapod vertebrates.
openaire +2 more sources
Alice Clement introduces the lungfishes, a group of sarcopterygian fishes that uses lungs to breathe and is the living sister group to tetrapod vertebrates.
openaire +2 more sources
Nitrogen metabolism in the African lungfish
Comparative Biochemistry and Physiology, 1968Abstract 1. 1. The free amino acid concentration and glutamate dehydrogenase (GDH) activity were similar in livers of unfed and estivating African lungfish. 2. 2. Glutamine synthetase was present in brain but undetectable in liver. 3. 3. Lungfish GDH was kinetically similar to amphibian GDH. 4. 4.
P A, Janssens, P P, Cohen
openaire +2 more sources
Lungfish: Phylogeny and parsimony
Journal of Morphology, 1986Miles ('77) has produced the only comprehensive cladistic analysis of the Dipnoi. His phylogeny involves both definitely and uncertainly placed genera. An analysis of the data for the definitely placed genera, using a Wagner routine, showed that his phylogeny is similar to two of eight equally parsimonious cladograms.
openaire +1 more source
Neoceratodus forsteri (Australian lungfish)
Trends in Genetics, 2021Manfred, Schartl, Axel, Meyer
openaire +2 more sources
Australian Triassic lungfish skulls
Journal of Paleontology, 1994Skull bones ofGosfordia truncataWoodward, 1891, from the Lower Triassic Hawkesbury Sandstone of New South Wales, Australia, are described for the first time. The skull roofing pattern suggests possible affinities betweenG. truncataandParaceratodus germaini(Triassic, southwest Madagascar).
openaire +2 more sources
Lungfish Hearing:Implications for the evolution of the tetrapod middle ear [PDF]
, 2015 Recent research has shown that tympanic middle earsevolved independently in the major vertebrate groups andrepresent independent experiments in terrestrial hearing.Furthermore, the tympanic ear emerged quite late – ap-proximately 120 mya after the origin of the tetrapods andapproximately 70 my after the first truly terrestrial tetrapodsemerged.
Christensen, Christian Bech +2 more
openaire +1 more source
Cardiovascular dynamics in the lungfishes
Zeitschrift für vergleichende Physiologie, 19681. Cardiovascular dynamics and the functional status of a double circulation have been studied in representatives of the three genera of lungfishes; Neoceratodus, Lepidosiren, and Protopterus. 2. The experimental approach consisted in continuous recording of heart rate, blood pressures and blood velocity from appropriate blood vessels in
Kjell Johansen +2 more
openaire +1 more source
An Immunohistochemical Approach to Lungfish Telencephalic Organization
Brain, Behavior and Evolution, 2009The brains of lungfishes have received little attention in comparative neuroanatomy, in spite of the strategic position of these fishes in phylogeny, in that they are currently recognized as the closest living relatives of tetrapods. The neglect has probably been due to the difficulty of obtaining these unique animals, which comprise (along with the ...
Agustín, González, R Glenn, Northcutt
openaire +2 more sources
A Tetrapod Neurohypophysial Hormone in African Lungfishes
Nature, 1970THE pituitary gland of Dipnoi is different from that of other bony fishes but very much like that of amphibians such as urodeles1. Because bony fishes usually have the neurohypophysial hormone isotocin, [Ser4,Ile8]-oxytocin (ref. 2), in contrast to amphibians which have mesotocin, [Ile8]-oxytocin (ref. 3), and mammals which have oxytocin4, it seemed of
R, Acher, J, Chauvet, M T, Chauvet
openaire +2 more sources