Примери за използване на Tetrapods на Английски и техните преводи на Български
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There are no transitional fossils between fish and tetrapods.
The ancestors of all tetrapods began adapting to walking on land.
The temporal and ecological separations between these two early tetrapods is unclear.
The further fate of the tetrapods was predetermined- they were simply killed.
On the other hand,the distal parts of the front fins are unlike those of tetrapods.
In bony fish and tetrapods the external opening into the inner ear has been lost.
Next Thursday, I'm going to talk to your class about the lungfish… the closest living relative of the tetrapods.
Not all adaptations observed in marine tetrapods can be attributed to convergent evolution.
The re-interpretation of existing fossil specimens is a recurring theme in the study of early tetrapods.
After tetrapods took to land, hundreds of millions of years would pass before a bipedal humanoid form emerged.
The vertebral column is ossified throughout its length andthe vertebrae are comparable to those of early tetrapods.
For more than 250 million years,four-limbed land animals known as tetrapods have repeatedly conquered the Earth's oceans.
Consequently, its unclear whether Elginerpeton is more closely allied with the Panderichthys orwith other early tetrapods.
With the exception of some sea turtles and crocodiles, no tetrapods weighing more than 25 kilograms(55 lb) survived.
Secondly, the concentration of many substances in toothpastes is too high for people andcan negatively affect tetrapods.
The small intestine is found in all tetrapods and also in teleosts, although its form and length vary enormously between species.
Fish are a paraphyletic group: that is,any clade containing all fish also contains the tetrapods, which are not fish.
The ancestors of all tetrapods began adapting to walking on land, their strong pectoral and pelvic fins gradually evolving into legs.
(Subsequent analyses have indicated that at least two other early tetrapods, Ichthyostega and Tulerpeton, also had more than five digits.).
Elginerpeton and Obruchevichthys may represent a distinct andpresumably short-lived radiation that diverged prior to the emergence of other tetrapods.
Study on the biomechanics of the cranio-cervical complex in lower tetrapods, using high-speed cinematography and computer tomography.
Most recently(2006), the discovery of another tetrapod-like fish, Tiktaalik,has substantially enriched our understanding of the transition of lobe-fins to tetrapods.
They have persisted since the dawn of tetrapods 390 million years ago in the Devonian period, when they were the first four-legged animals to develop lungs.
Recent investigations in the fossil record have provided new insight into the evolution of traits that allowed marine tetrapods to thrive in the sea.
Perhaps the most important findings to alter our understanding of tetrapods evolution followed the discovery and analysis of Acanthostega in the late 1980s and early 1990s.
With its combination of fish-like and tetrapod features Acanthostega has engendered a variety of speculation about the paleoecology and evolution of early tetrapods.
With the exception of a few species such as the leatherback sea turtle and crocodiles, no tetrapods, including dinosaurs, weighing more than 25 kilograms(55 lb) survived.
But there's a gap of about 15 million years in the fossil record following the close of the Famennian,after which time the record shows a very diverse group of aquatic and terrestrial tetrapods.
Its structure is similar in most terrestrial tetrapods, but it may be fused with the ulna in some mammals(such as horses) and reduced or modified in animals with flippers or vestigial forelimbs.[5].
With the exception of some ectothermic species such as the leatherback sea turtle and crocodiles, no tetrapods weighing more than 25 kilograms survived.