The fossils that rewrite the history of the dinosaurs: 230 million-year-old remains suggest their rise was 'more gradual' than thought

化石重写恐龙历史:2.3亿年前恐龙遗骸表明,恐龙崛起的过程比想象中更为平缓。
Sarah Griffiths for MailOnline

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Tos
Brazil : the land of sun , summer and sea
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Jay
Our own self importance as the apex predator & only sentient being on this planet really is quite depressing. We'll likely be here for the blink of an eye; & it will take far far more than an epiphany to change it.
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UsOcoms1Reply toJay
They say if you break the time frame of the earth into a 24 hour day, humans are at 11:59 and 59 seconds PM. Not even a blink of an eye.
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Matey
Whenever I see a story on dinosaurs I always think of John Cleese as Mizz Anne Elk delivering her theory on dinosaurs being thin at one end, fat in the middle and thin at the other end. It's her theory and all hers !
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Dune playerReply toMatey
Olrite m8y. Remains of dino's are only ever found by "experts". Paper machet copies in museums of what? They are a con. To perpetuate the illusion that we are random and insucnificant. Job done.
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Peter .Reply toMatey
Dune player - You're either a deliberate liar or just utterly ignorant. (Your grammar and spelling does suggest total mental incompetence, so that's a third option I suppose..)
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UsOcoms1
Some say if you break down the life span of earth so far into a 24 hour day, humans would appear at 11:59 and 59 seconds PM.
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Tuna SandwichReply toUsOcoms1
In your analogy, a second is equivalent to 50-55,000 years. So the emergence of the h0m0 genus would be at about 11:59 and 50 seconds, and the emergence of anatomically modern humans would be about 11:59 and 56 seconds. Apologies if my maths are off.
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UsOcoms1Reply toUsOcoms1
Thank for filling in the details that I left out.
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RitzBiscuit
DM: Evolution takes time. Extinction takes a moment.
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Usutu1973Reply toRitzBiscuit
Evolution takes so long, it never actually happened. Try Richard Lenski's 25 yr experiment that has produced NOTHING.
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Tuna SandwichReply toRitzBiscuit
Oh look - a halfwit. Let's point and laugh. Over the course of those 25 years, Richard Lenski has bred 50k generations of 12 E.Coli populations, whose environments were manipulated to impose selective pressure. Between generations 30k and 35k, one of the populations evolved the ability to absorb, ingest and metabolise citrate, making it easier for them to survive. E.Coli's inability to ingest citrate is one of the main distinctions from its close cousin Salmonella. This ability to digest citrate came from a potentiating mutation, which required at least two mutations prior to activation - meaning it did not exist in the previous generation, or in any of the first twenty thousand. Earlier generations of the E.Coli were frozen, and the genes were not found. So a series of mutations allowed an organism to gain a new function - macro evolution observed. Let's hope this Usutu1973 buffoon is sterile.
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Peter .Reply toRitzBiscuit
Usutu1973 - You absolute gibbering liar! This is precisely why you gi ts deserved absolute derision and contempt!!!
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kirstenReply toRitzBiscuit
It does,so stop slagging off the dm.It may not be the best way of explaining it but it is technically true.Kill off the last one of a species,and it's extinct.Simple as that.
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MateyReply toRitzBiscuit
Usutu1973. Clearly you can't grasp time as the major concept in evolution! What do they teach down there or is our contributor just plain thick ?
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sskiles
There is still a lot for us to learn about the past. What we believed were the precursors to humans have now been discovered to be living on Earth at the same time as us, and what we believed were the precursors to dinosaurs have now been discovered to be living on Earth at the same time as dinosaurs. Interesting to think what we will learn in the next couple hundred years.
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Randy_PriestReply tosskiles
That isn't true, you are deliberately misunderstanding the facts.
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aciddrop
When it comes to prehistory why are artists so impressionable? Who drew this one -Tracy Emin?
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BrexitBoyAndProud
Why are people finding this so surprising. I always thought this would be the case.
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null
Another artists impression of dinosaurs - do they REALLY have to tell us that??!!
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Peter .Reply tonull
Apparently. The creationists get very confused about this sort of thing.
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