Thirty tons of weight, a length of 14 meters and a gigantic jaw with triangular teeth of 20 cm: we are speaking of the greatest raider of the seas, lived up to around 1,5 million years ago..
Its name is Carcharodon megalodon, an extinct shark characterized by great teeth (megalodon) thick, triangular, serrated in both the sides, with a length from 15 to 20 cm,
Of this animal only the teeth and vertebrae have remained, being its skeleton cartilaginous, as that of all the condroittis, and therefore degradable in brief period of time.
Analyzing the fossils teeth, the dimensions have been established, reaching the conclusion that probably the length of this shark would be of 13-14 ms with a weight of 20-30 tons.
The study of the rings of
growth of the rare recovered vertebrae points out that this animal lived
for 35-40 years.
The presence of the
Carcharodon megalodon has been inserted among the Miocene and the
Pliocene (between 15 and 1,5 million years ago) and the motive for the
extinction is not certain: the two most accredited hypotheses are those
of the lowering of the temperature of the oceans and a diminution of its
Numerous criptozoologis affirm
even that this shark is not extinct, but present in deep waters and
therefore very difficult to observe..
The great similarity in the
morphology of the teeth suggests that the Carcharodon megalodon
is a "narrow relative" of the white shark (Carcharodon carcharias),
but also here some
considered the idea of the convergent evolution, that is two
evolutionary lines that have brought to similar results, inserting
therefore the Carcharodon megalodon in a different genus.
(recostruction of Carcharodon megalodon jaw)
E' assolutamente vietata la
riproduzione, anche parziale, del testo e delle