Hallucigenia bring us back to date more than 500 million years to a time known as the Cambrian Period when most of the major groups of animals first appeared. The Cambrian Period was also a time of evolutionary experimentation in which countless bizarre body plans were tried out and then left behind in the primordial soup. One particularly odd set of fossils come from an area of the Canadian Rockies known as the Burgess Shale, including a strange little arthropod named Hallucigenia.
Hallucigenia gets its name from its body plan, which appears to have been designed by someone under the influence of psychedelic drugs. It has an elongated body with a row of tentacles on one side and a string of stiltlike spines on the other. At first, researchers had no idea which way to orient the animal — on its tentacles or on its spines — but chose the spines since the tentacles appeared to have mouthparts on the end of them. However, recent evidence suggests that Hallucigenia's tentacles were actually paired appendages used for walking and that the spines were most likely for protection from predators. Based on this discovery, Hallucigenia was finally turned right side up.
Okay, maybe 500 millions years ago extinction has nothing to do with our human selfish act towards mothernature. So I ll be realistic ... on the next article Im gonna present to you all :D
P/s :Its not something cute.
Who knew pigeons could be extinct? we see them everyday.The earliest settlers in the New World were amazed by the passenger pigeon, a bird with flocks so huge that it would take days for them to travel overhead, blackening the sky as they passed. Any farmer who had the misfortune of hosting passenger pigeons for a meal would quickly find his entire crop decimated within the blink of an eye. Then, virtually overnight, the most abundant bird in North America suddenly disappeared from the planet.
The extinction of the passenger pigeon is an example of nature coming into direct conflict with man. Its population numbered an astounding 3 to 5 billion when the first Europeans arrived in America. However, there was not room enough in the New World for both species. Passenger pigeons were soon wiped out due to merciless hunting, deforestation and other factors related to humankind's ever-expanding range. The extinction was only becoming apparent at the start of the 20th century; by 1914, the last known bird was dead.
Mling signing off :P
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