Results 141 to 150 of about 1,738 (172)

The occipital bones of the Dipnoi

1923
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Osteogenesis in the Australian lungfish, Neoceratodus forsteri (Osteichthyes: Dipnoi)

Australian Journal of Zoology, 2022
Several types of bone development are present in the Australian lungfish, Neoceratodus forsteri, the only extant member of the family Neoceratodontidae. In this species, dermal and parachondral bones form around the chondrocranium and mandible, to protect the brain and sense organs, to support the dentition and to facilitate oral function.
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The evolutionary significance of pulmonary surfactant in lungfish (Dipnoi).

American Journal of Respiratory Cell and Molecular Biology, 1995
In this study, we characterized surfactant lipids from the lungs of the lungfish, Protopterus annectens, Lepidosiren paradoxa, and Neoceratodus fosteri (Sarcopterygiia: Dipnoi). We quantified the types of phospholipids present, the amounts of total phospholipid, disaturated phospholipid (DSP)--purported to be the primary surface tension-controlling ...
Orgeig, Sandra, Daniels, Christopher Brian   +1 more
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Feeding systems of living dipnoi: Anatomy and function

Journal of Morphology, 1986
Living lungfishes capture prey by means of suction and then use a simple “hydraulic” transport system to position it for processing between the tooth plates. Three major morphological features–-an autostylic jaw suspension, tooth plates, and a reduced but highly mobile branchial apparatus–-largely determine the special cranial morphology of living ...
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Prismatic dentine in the Australian lungfish, Neoceratodus forsteri (Osteichthyes: Dipnoi)

Tissue and Cell, 2006
The Australian lungfish, Neoceratodus forsteri, has a dentition consisting of enamel, mantle dentine and bone, enclosing circumdenteonal, core and interdenteonal dentines. Branching processes from cells that produce interdenteonal dentine leave the cell surface at different angles, with collagen fibrils aligned parallel to the long axis of each process.
Kemp, Anne, Barry, John C.
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Die Fahrenholzschen Organe der Dipnoi und Brachiopterygii

Zeitschrift f�r Zellforschung und Mikroskopische Anatomie, 1968
1. Die Haut aller rezenten Gattungen der Dipnoi und der Brachiopterygii, insbesondere die Schleimzellen, Neuromasten der Epidermis, Geschmacksknospen und die Fahrenholzschen Organe wurden lichtmikroskopisch untersucht. 2. Die Dipnoi besitzen einen Typ groser Schleimzellen in der Epidermis, die Brachiopterygii zwei verschiedene Typen ...
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Paedomorphosis and the evolution of the Dipnoi

Paleobiology, 1984
Paedomorphosis has played an important evolutionary role in several vertebrate lineages, yet there are few studies in which fossils have been used to document this evolutionary pattern directly. The unusually good fossil record of lungfishes offers an excellent opportunity to do this.
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Cytogenetic and molecular studies in a lungfish, Protopterus annectens (Osteichthyes, Dipnoi)

Gene, 2002
A neontological approach to the problem of the origin of tetrapods consists in the examination of the available cytological and molecular data on the genome of these vertebrates. Dipnoans are a group of osteichthyian fishes, the evolutionary relationships of which with tetrapods have been disputed since their discovery. In the past, they were variously
MORESCALCHI M. A., ROCCO, Lucia, STINGO, Vincenzo   +2 more
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Retina und Retinomotorik der Dipnoi und Brachiopterygii

Zeitschrift f�r Zellforschung und Mikroskopische Anatomie, 1968
1. Das Auge, insbesondere die Retina von Calamoichthys calabaricusJ. A. Smith, Polypterus delheziBoulenger (Polypteridae, Polypteriformes, Brachiopterygii) und von Protopterus dolloiBoulenger (Protopteridae, Lepidosireniformes, Dipnoi) wurde lichtmikroskopisch untersucht. Die Zahl der Seh- und Ganglienzellen wurde uberschlagsweise berechnet.
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Das geruchsorgan der rezenten Actinistia und Dipnoi (Pisces)

Zeitschrift für Morphologie der Tiere, 1969
The olfactory organs of all recent genera from the Actinistia (Latimeria) and Dipnoi (Neoceratodus, Lepidosiren, Protopterus) were studied morphologically, and compared with each other. Whereas the olfactory organ of Latimeria resembles that of the Brachiopterygii, the olfactory organ of the Dipnoi is similar to that, of the Elaemohra.nnhii and ...
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