Recent advances in molecular techniques have allowed scientists to successfully extract proteins and dna fragments from extinct animals found in museum collections or the recent fossil record. in the near future, it may be possible to clone previously extinct organisms such as mammoths. what are your opinions on cloning extinct species?

maritime tropical may be your answer.

where is the scientific experiment?

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.