Huang Diying

recently, researchers at the Huang Diying Research Institute of the Chinese Academy of Sciences Nanjing geology and paleontology led the research team, from nearly 100000 pieces of fossils, found so far the earliest, largest flea fossil -- they lived in 165000000 years ago, is the modern flea 10 times, Cheap La Galaxy Jerseys about 40000000 years earlier than previously reported in Australia find flea fossil. The results of the recently published online in the international journal "Cretaceous research". (reporter Mao Qing)

Huang Diying, a parasitic insect, feed on animal blood for a living, the body will die with the host, it is difficult to preserved in fossils. Giant fossil found in the county in Inner Mongolia is Jurassic Daohugou animal in the group are found, at least not in before search 100000 fossil. Because the fossil layer in the volcano ash in the volcano ash particles, Cheap Tottenham Hotspur Jerseys thin the insect details "solidification" sealed off, flea fossil could be preserved.

"flea, now all the fleas will jump, but ancient flea is not jump. But as time goes on, more and more small flea head." Huang Diying said, 165000000 years ago the flea maximum of more than 2 cm, then gradually become smaller, about 118000000 years ago, only 7 mm. And now the flea was 1 - 3 mm, is simply "giants" and "dwarf" gap. Moreover, the ancient flea, hind legs is not developed, long nails, only male fleas will jump a little flea, mother can't jump. But the modern fleas have two strong hind legs, can skip them at 350 times the distance, the equivalent of a person to skip a football field.

world ancient biological experts found that the flea fossils are extremely rare, before the flea was discovered in 1970 by Australian scientists. Huang Diying with its own fossil phase comparison, two kinds Cheap Athletic Bilbao Jerseys of fleas should belong to the same genus, which have a common ancestor.

China and Australia are numerous hills and streams, the flea Cheap Fulham Jerseys is how to do this a long-distance "move" process? Huang Diying analysis, in fact, 165000000 years ago, in the Middle Jurassic before because Pangea has not yet fully split, Chinese and Australia is a complete, flea ancestors also walk in the land, and to the 118000000 or so years ago, the mainland has been gradually cracking, the Australian continent has spread and Cheap Newcastle Jerseys other continental plate obvious division, flea ancestors also with the "plate" drift, easily finish the long distance journey.