The early radiation of tetrapods is analysed, and it is shown that there is no good evidence against a monophyletic origin of a single basal type from which all others were derived. 13. The dynamic significance of the emergence of tetrapods lies largely in locomotion mechanics and the loss of the buoyancy effect on leaving the water.
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Tetrapods are now generally considered to have colonized land during the Carboniferous (i.e., after 359 MYA), which is considered to be one of the major events in the history of life.
The fossil record of Devonian tetrapods is often presented as compelling evidence of this major evolutionary transition. 1 Science writer Carl Zimmer has written a popular book, At the Water’s Edge, 2 which purports to show how life came ashore (i.e. how fish evolved into tetrapods) and then went back to the sea (i.e. how land mammals gave rise to the whales).
The first African Devonian tetrapods. Two new species, named Tutusius and Umzantsia, are Africa’s earliest known four-legged vertebrates by a remarkable 70 million years. The approximately metre-long Tutusius umlambo (named in honour of Archbishop Emeritus Desmond Tutu) and the somewhat smaller Umzantsia amazana are both incomplete.Tutusius is represented by a single bone from the shoulder.
The Origin of Tetrapods. Exploring Prehistoric Life. Tuesday,. we find a series of fossil forms that lived between about 390 and 360 million years ago during the Devonian Period. During this interval, this lineage of fleshy-finned organisms moved from the water to the land.
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