Sifrys Alerts: State of the Blogosphere, October, 2006
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Nate, aka Thoth is a 24 year old guy from Bridgewater, Massachusetts, USA
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Four-finned Japanese dolphin an evolutionary throwback, researchers say
"Although dolphins and whales with
odd-shaped protrusions near their tails have been caught in the past, researchers think this is the first one found with well-developed, symmetrical fins, Hayashi said.
"I believe the fins may be remains from the time when dolphins' ancient ancestors lived on land ... this is an unprecedented discovery," said Seiji Osumi, an adviser at Tokyo's Institute of Cetacean Research, at a news conference televised Sunday.
Fossil remains indicate that dolphins and whales were four-footed land animals about 50 million years ago and share a common ancestors with the hippopotamus and deer. Scientists believe they later transitioned to an aquatic lifestyle and lost their hind limbs.
Whales and dolphin fetuses show signs of hind protrusions but they disappear before birth. "
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