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originally posted by: randyvs
a reply to: Krazysh0t
Alright I'll ask a question and even SnF your thread for scientific
Are there more specific findings of dinosaurs to birds? For intance,
would it be only reptile dinosaurs that evolved this way? Or would it
be only the mammalian dinos or perhaps both?
originally posted by: Krazysh0t
a reply to: Plugin
There are a few things that need to be addressed here. First, there were THREE distinct periods during the age of the dinosaurs (Triassic, Jurassic, and Cretaceous periods) with different dinosaurs in it. Also evolution continued to work and help create new dinosaurs throughout the Mesozoic era. Though you are also correct about the explosion of new life after the KT event. That can be explained due to punctuated equilibrium where evolution tends to speed up to fill many niches when there is a void created of all the niches after a mass extinction event. Keep in mind though that even sped up by punctuated equilibrium, evolution still takes millions of years though.
Punctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that most species will exhibit little net evolutionary change for most of their geological history, remaining in an extended state called stasis. When significant evolutionary change occurs, the theory proposes that it is generally restricted to rare and rapid (on a geologic time scale) events of branching speciation called cladogenesis. Cladogenesis is the process by which a species splits into two distinct species, rather than one species gradually transforming into another.
originally posted by: buddha
I dont belive this!
the bigest animals are now small birds?
dont they keep saying some big death killed them all?
"Once the whole body plan finally came together, then something was unlocked and they started evolving really fast," says paleontologist Stephen Brusatte of the University of Edinburgh in Scotland, lead author on the study.
originally posted by: Verum1quaere
New Evidence Shows Duck-like Birds Lived at Same Time as Dinosaurs
originally posted by: bigfatfurrytexan
a reply to: Kromlech
what moment are you referring to?
are you ready to consider that a "moment" is, in this case, over a million years? Its not like one day all the dinosaurs on the planet didn't wake up.
The "moment" all dinosaurs went extinct, most of the bipedal specimens had already either died off, or taken flight.
originally posted by: Kromlech
...Oh cool, so an asteroid DIDN'T kill all the dinosaurs? It took "a million years later" for that asteroid to kill them all off? Huh ?