美洲最古老的家犬遗骸有助于揭示古代犬类迁徙的故事 sina.com.cn - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sina.com.cn Daily Mail and Mail on Sunday newspapers.
The finding, published today in the journal
Scientific Reports, is the result of reconstructing an unusual trace fossil that they identified as a burrow of these ancient worms.
According to the study’s lead author, SFU Earth Sciences PhD student, Yu-Yen Pan, the trace fossil was found in a rocky area near coastal Taiwan. Trace fossils are part of a research field known as ichnology. “I was fascinated by this monster burrow at first glance,” she says. “Compared to other trace fossils which are usually only a few tens of centimetres long, this one was huge; two-metres long and two-to-three centimetres in diameter. The distinctive, feather-like structures around the upper burrow were also unique and no previously studied trace fossil has shown similar features.”
Credit: Masakazu Nara
Simon Fraser University researchers have found evidence that large ambush-predatory worms some as long as two metres roamed the ocean floor near Taiwan over 20 million years ago. The finding, published today in the journal
Scientific Reports, is the result of reconstructing an unusual trace fossil that they identified as a burrow of these ancient worms.
According to the study s lead author, SFU Earth Sciences PhD student, Yu-Yen Pan, the trace fossil was found in a rocky area near coastal Taiwan. Trace fossils are part of a research field known as ichnology. I was fascinated by this monster burrow at first glance, she says. Compared to other trace fossils which are usually only a few tens of centimetres long, this one was huge; two-metres long and two-to-three centimetres in diameter. The distinctive, feather-like structures around the upper burrow were also unique and no previously studied trace fossil has shown similar features.
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