Home > Biology > Is the Frilled Shark a “living fossil” ?

Is the Frilled Shark a “living fossil” ?

January 24, 2007

A few of my SciBlings have posted on the frilled shark (Chlamysoselachus anguineus) that turned up off Japan. Shelley and PZ have two different videos to check out. A CNN story notes that the species “sometimes referred to as a ‘living fossil’
because it is a primitive species that has changed little since prehistoric times.” This is a somewhat controversial statement. A few paleontologists claim that the species is a living cladodont shark, but while some of its features (teeth in particular) are like the cladodonts that occupied Devonian seas, Chlamysoselachus has numerous neoselachian skeletal and muscular features unknown in more archaic sharks (source).

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  1. J-Dog
    January 24, 2007 at 7:40 pm

    Whatever it is offically, it’s all cool to me…

  2. January 24, 2007 at 9:30 pm

    You are not the only one irked by the term.

  3. January 25, 2007 at 3:11 am

    Any idea what selachus means? Quite common word out there.

  4. John Lynch
    January 25, 2007 at 8:57 pm

    Basically means “shark”

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