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Recent fossil finds

  1. Apr 13, 2006 #1


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    Two significant finds - both being refered to as "missing links" - in the area of evolutionary biology have made the news these last couple of days. I've put them together here.

    1. Fossils of a fish-to-tetrapod link discovered in Ellesmere Island, Canada :

    News links :


    [quote]Paleontologists have discovered fossils of a species that provide the missing evolutionary link between fish and the first animals that walked out of water onto land about 375 million years ago. The newly found species, Tiktaalik roseae, has a skull, a neck, ribs and parts of limbs that are similar to four-legged animals known as tetrapods, as well as fish-like features such as a primitive jaw, fins and scales.[/quote]


    Original References :

    [url=http://www.nature.com/nature/journal/v440/n7085/abs/nature04639.html]"A Devonian tetrapod-like fish and the evolution of the tetrapod body plan" [/url]
    Edward B. Daeschler, Neil H. Shubin and Farish A. Jenkins, Jr, [i]Nature[/i], [b]440[/b], 757 (2006)

    [url=http://www.nature.com/nature/journal/v440/n7085/abs/nature04637.html]"The pectoral fin of Tiktaalik roseae and the origin of the tetrapod limb"[/url]
    Edward B. Daeschler, Neil H. Shubin and Farish A. Jenkins, Jr, [i]Nature[/i], [b]440[/b], 764 (2006)

    [b]2. Ardipithecus to Australopithecus link unearthed in Ethiopia : [/b]

    News links :


    [quote]"This appears to be the link between Australopithecus and Ardipithecus as two different species," White said. The major noticeable difference between the phases of man can be seen in Australopithecus' bigger chewing teeth to eat harder food, he said.

    While it's looking more likely, it is not a sure thing that Ardipithecus evolved into Australopithecus, he said. The finding does not completely rule out Ardipithecus dying off as a genus and Australopithecus developing independently.

    The connections between Ardipithecus and Australopithecus have been theorized since an anamensis fossil was first found in Kenya 11 years ago. [/quote]


    Original Reference :

    [url=http://www.nature.com/nature/journal/v440/n7086/abs/nature04629.html]"Asa Issie, Aramis and the origin of Australopithecus" [/url]
    Tim White [i]et al, Nature[/i], [b]440[/b], 883 (2006)
    Last edited by a moderator: May 2, 2017
  2. jcsd
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