Bird-from-Dinosaur Theory of Evolution Challenged: Was It the Other Way Around?

[Kadri]

Interesting ! Do you know something about this guys? Any other links?

http://www.sciencedaily.com/releases/2010/02/100209183335.htm

[Henry Blewer]

I missed this entirely. Thanks for posting this.

[PabloMack]

Interesting ! Do you know something about this guys? Any other links?

I know quite a lot about this. The journalist who wrote this is over-stating his case. Sauropods and the Ornithischians made up the bulk of dinosaur diversity.  These certainly did not evolve from birds as their basal ancestors showed up in the late Triassic (Carnian-Norian times) well before Archaeopteryx which didn't appear until the late Jurassic.  That is at least a 60 millian year lead on the oldest known birds. The only issue here is how many of the theropod dinosaurs (which is still quite diverse) were regressive and were descended from birds who secondarily became flightless.  The evolutionary tree of birds should probably be called the evolutionary bush of birds because it is turning out to be so complex.  But theropods also lead birds since Coelophysis is well known from Ghost Ranch which is also from the late Triassic.  I don't think that there is any question that some of the dinosaurs had avian origins such as the struthiomimids but claiming that all dinosaurs came from birds is an absurd asertion and has no merit. To read further on the subject find books by Luis Chiappe and John Long among others.

[Kadri]

Thanks 

[Goms]

So.... i don't have to fear a re-evolution of Velociraptors? 

[schmeerlap]

So.... i don't have to fear a re-evolution of Velociraptors? 

Embrace your fear, Goms.   

[Henry Blewer]

They would make great guard animals.

[Goms]

They would make great guard animals.

for preventing bad code


*http://xkcd.com/

[Henry Blewer]

lol

[PabloMack]

So.... i don't have to fear a re-evolution of Velociraptors? 

No.  But only your chihuahua needed to fear Velociraptor (12 kg).  For humans it would have been Deinonychus (80 kg) or Utahraptor (500 kg). 

[Goms]

never saw Jurassic park, huh?

[Jack]

[PabloMack]

Yeah. Jesus called his followers "sheep".  The thing I wanted to know as a child is whether he ate lamb or mutton.

never saw Jurassic park, huh?

The Jurassic Park "Velociraptors" were designed directly from Deinonychus.  But since Deinonychus doesn't have "raptor" in its name, reality gave way to Hollywood. It was actually Deinonychus that inspired John Ostrom to revive the idea that birds evolved from dinosaurs.