Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×
Earth Science

Newly Discovered Sea Creature Was Once the Largest Animal On Earth 57

sciencehabit writes Almost half a billion years ago, the largest animal on Earth was a 2-meter-long, helmet-headed sea creature that fed on some of the ocean's tiniest prey. The newly described species is one of the largest arthropods yet discovered, a class of animals that includes spiders and crabs. The well-preserved remains of the multisegmented creature are providing clues about how subsequent arthropods' legs may have evolved from the dozens of stubby flaps used to propel this beast through the water.
This discussion has been archived. No new comments can be posted.

Newly Discovered Sea Creature Was Once the Largest Animal On Earth

Comments Filter:
  • by Anonymous Coward

    2-meter-long, helmet-headed creature....

    First post :)

  • by Guy From V ( 1453391 ) on Thursday March 12, 2015 @04:29AM (#49239669) Homepage

    This is the most "Why not Zoidberg" scenario ever.

    • by Anonymous Coward

      Unoriginal, that question is already asked among the comments to TFA.

  • uuuh.. ehehe.. hey Beavis... ehehe
  • by Anonymous Coward

    Rock Lobster.

  • O my gods! Leviathan has shrunk!
  • .... then pretty soon the largest creature on earth will once again be 2m long - us. Since we seem to find some sort of glee in killing pretty much all the large fauna on this planet.

  • by Anonymous Coward

    One question I ask myself whenever I see some new creature is "I wonder how it tastes". It's kind of disturbing when watching sci-fi flicks though.

    • Re: Cooking (Score:3, Interesting)

      by rkcth ( 262028 )

      I've often wondered if they can bring back the dodo or the wooly mammoth if we will domesticate them for food, since both were believed to be hunted to extinction by man, they must be delicious.

    • by tnk1 ( 899206 )

      One question I ask myself whenever I see some new creature is "I wonder how it tastes".

      Like chicken.

      See how easy that was?

  • by OzPeter ( 195038 ) on Thursday March 12, 2015 @08:03AM (#49240261)

    For a short time I was the youngest person on earth.

  • Keep reading this kind of stories. But I wonder how the scientists come to a conclusion, about newer species and all the evolution that might have happened, and make people believe it... just based on theories.
    • Keep reading this kind of stories. But I wonder how the scientists come to a conclusion, about newer species and all the evolution that might have happened, and make people believe it... just based on theories.

      1. You misunderstand what a theory is.

      2. The current theory is testable, based on observations and hypotheses, and will be altered as evidence requires. It's certainly better than "God did it", which is not testable, has no observational basis, and the proponents refuse to alter their beliefs based on evidence to the contrary.

    • by OzPeter ( 195038 )

      and make people believe it... just based on theories.

      You do know that Gravity is also only a theory?

  • This is a minor quibble, but the article says:

    Almost half a billion years ago, the largest animal on Earth was a 2-meter-long, helmet-headed sea creature that fed on some of the ocean’s tiniest prey. The newly described species is one of the largest arthropods yet discovered

    Now, if it's the largest animal ever on Earth, doesn't that mean it also has to be *the* largest arthropod, and not just one of the largest? Or are there some arthropods that are larger, and also not animals?

    • by jps25 ( 1286898 )

      It was the largest animal on earth half a billion years ago.
      Since then there have been larger animals, including larger arthropods.

      • Ah, thank you. That makes more sense.

        New question, then: Why is this a big deal? I paid more attention to what I was reading now, and it says that this animal was 1.6 meters long, so it wasn't very big at all. Why is it a big deal that it was the largest animal at the time?

        Is it something like, this is the last time that an arthropod was the largest animal on earth? And why is that particularly interesting? For the sake of clarity, I'll explain that I'm not arguing that it's not interesting. It just

        • Certainly there have been a *lot* of creatures that were the largest animal on Earth at the time. But there were far, far more that weren't. I would say belonging to that tiny subset of "largest of its time" is a fairly interesting feature, at least where headlines are concerned. From a scientific perspective I'd say the evolutionary insight from the paddles is probably far more interesting, but that's not going to generate nearly as much attention. Lead with the dramatic, and far more people will hear o

          • Yeah, once I understood the headline and that it wasn't the largest animal ever, the insight about the paddles evolving into limbs seemed more interesting to me, too.

    • Re:Minor quibble (Score:4, Interesting)

      by mrchaotica ( 681592 ) * on Thursday March 12, 2015 @09:42AM (#49240869)

      It was the largest [known] animal on Earth at the time, and therefore also the largest arthropod at the time. Bigger arthropods have existed, but they came later. For example, the modern Japanese spider crab [wikipedia.org] could be considered "bigger" (depending on what you're measuring) because it can have an almost 4 meter leg span. And of course, Wikipedia [wikipedia.org] lists Jaekelopterus (2.5 meters), a sea scorpion, and Arthropleura (2.1 meters), a millipede, but they both lived about 100 million years more recently than the species in TFA.

  • Pokemon? (Score:4, Funny)

    by rjejr ( 921275 ) on Thursday March 12, 2015 @10:00AM (#49240985)
    That artwork is straight out of the Pokedex, maybe an ice type?
  • Bacteria, once the largest creatures on earth, are now the smallest!!

Math is like love -- a simple idea but it can get complicated. -- R. Drabek

Working...