Results 31 to 40 of about 5,493 (196)

The cranial endocast of Dipnorhynchus sussmilchi (Sarcopterygii: Dipnoi) and the interrelationships of stem-group lungfishes [PDF]

open access: yesPeerJ, 2016
The first virtual cranial endocast of a lungfish from the Early Devonian, Dipnorhynchus sussmilchi, is described. Dipnorhynchus, only the fourth Devonian lungfish for which a near complete cranial endocast is known, is a key taxon for clarifying ...
Alice M. Clement   +3 more
doaj   +2 more sources

The small non-coding RNA processing machinery of two living fossil species, lungfish and coelacanth, gives new insights into the evolution of the Argonaute protein family [PDF]

open access: yes, 2017
Argonaute (AGO) family proteins play many roles in epigenetic programming, genome rearrangement, mRNA breakdown, inhibition of translation, and transposon silencing.
Barucca, Marco   +6 more
core   +1 more source

Olfactory Projections in the Lepidosirenid Lungfishes [PDF]

open access: yesBrain, Behavior and Evolution, 2011
Olfactory nerve and olfactory bulb projections in lepidosirenid lungfishes were experimentally determined with neural tracers. Unilateral injections of DiI into the olfactory nerve labeled the accessory and main olfactory bulbs as well as fibers of the anterior root of the terminal nerve, which terminates extensively in cell groups of the medial ...
R Glenn, Northcutt, Elke, Rink
openaire   +5 more sources

Physiological Responses to Prolonged Aquatic Hypoxia in the Queensland Lungfish Neoceratodus forsteri [PDF]

open access: yes, 2002
The effects of moderate and severe hypoxia on air breathing frequency and respiratory properties of the blood of the Queensland (Australian) lungfish Neoceratodus forsteri were measured in fish exposed to these conditions for 14-22 days at 20 degrees C ...
Babiker   +34 more
core   +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

LUNGFISHES' BALANCING ACT [PDF]

open access: yesJournal of Experimental Biology, 2007
![Figure][1] Our bodies are constantly working to keep everything in balance; when we exercise, not only do we breathe harder to get more oxygen to our muscles, but also to get rid of the painful lactic acid `burn'. All air breathing land dwellers deal with acid – an excess of protons –
openaire   +1 more source

The Immunoglobulins of Cold-Blooded Vertebrates [PDF]

open access: yes, 2014
Peer reviewedPublisher ...
Chen   +22 more
core   +2 more sources

Optimal Strouhal number for swimming animals [PDF]

open access: yes, 2011
To evaluate the swimming performances of aquatic animals, an important dimensionless quantity is the Strouhal number, St = fA/U, with f the tail-beat frequency, A the peak-to-peak tail amplitude, and U the swimming velocity.
Abramowitz   +86 more
core   +3 more sources

Meeting report: a hard look at the state of enamel research. [PDF]

open access: yes, 2017
The Encouraging Novel Amelogenesis Models and Ex vivo cell Lines (ENAMEL) Development workshop was held on 23 June 2017 at the Bethesda headquarters of the National Institute of Dental and Craniofacial Research (NIDCR).
Bartlett, John D   +13 more
core   +1 more source

Nkx2-5 and Sarcospan genetically interact in the development of the muscular ventricular septum of the heart [PDF]

open access: yes, 2017
The muscular ventricular septum separates the flow of oxygenated and de-oxygenated blood in air-breathing vertebrates. Defects within it, termed muscular ventricular septal defects (VSDs), are common, yet less is known about how they arise than rarer ...
Chen, Iuan-bor D   +11 more
core   +2 more sources

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