This is the latest spectacular fossil to come out of China in recent years. Damn that Xing Xu- lucky bastard!
Clarification fo some terms:
basal = more primitive, branched off early from the main ...
This is the latest spectacular fossil to come out of China in recent years. Damn that Xing Xu- lucky bastard!
Clarification fo some terms: basal = more primitive, branched off early from the main stock. plesiomorphic = ancestral, more primitive derived = ''more evolved'', specialised lacustrine = lake deposit cranium = skull mandible = lower jaw furcula = wishbone tibiotarsus = lower leg bone restoration = scientific interpretation, reconstrution Ma = million of years ago Cretaceous = geologic period lasting from ~144Ma to ~67Ma Jurassic = geologic period lasting from ~205Ma to ~144Ma tetrapod = four limbed organism archosaur = tetrapods more similar to crocodiles than to lizards dinosaurs = archosaurs with fully erect posture, fused lower back vertebrae and long, raised ankles birds = dinosaurs with hollow bones, a ''through'' lung system, feathers, a wishbone, a fused and box- like pelvis, fused fingers, a jawless toothless beak and a fan like tail with only a stubby bone to support it.
Get used to cumbersome terms like ''non-avian therapod'' or ''non-avian dinosaur'', they are really the only accuate way of determining what we are talking about. If you simply say ''dinosaur'' to a palaeontologist then for all they know you could be talking about a penguin or a pigeon.
Dinosaurs did NOT become extinct 65 million years ago, they are alive and well today and are currently the most widespread and species-diverse group of tetrapods. Among the vertebrates, only teleost fish outnumber them on species diversity.
Dinosaurs are NOT all gigantic. Anchiornis is the smallest non-avian dinosaur known, only being about the size of a crow.
I am really happy with the first half of this video, if I hadn't have found out about the creationists an their malarky then I might have considered it my best one- but then I had to mess it up by hastily rambling about their nonsense.
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you have interesting ideas, but not stupid ones. don't worry about "excommunication"
the only example of "excommunication"/ extreme ridicule I know of in paleontology are those clowns from oregon state university (Ruben et al.); you too would be severely ridiculed if you said that the feathers on sinosauropteryx's feather were from a bird under the fossil XD
or Archaeopteryx was a cold blooded animal. (wtf?)
or that Respiratory turbinals are the ONLY requirement for endothermy, etc.
No, I think the evidence firmly points to therapods at least being the ANCESTORS of birds. But, from my own view of some things, I put it more in the mammal like reptiles/synapsids where while there is a grey area, you'd be justified in separating the true birds from the dinosaurs. I base this partly on the way dinosaur and bird bodies, while similar, were clearly designed for different functions
I would also say that while I think the evidence is pretty conclusive as to the link, I don't agree with the practice of looking at modern day birds when trying to figure out behaviour (eg, looking at that well known Tenotosaurus with Deinonychus find and determining the dromaeosaur behaviour based on bird behaviour) given I think behaviour's main controls are sex and food. Therapods occupied a very different niche to all flying and probably all/most ground birds today, and their habits would be
again, in my very uninformed opinion (not being modest, I'm just dense) controlled by the advantage for their lifestyle than their relatives. Eg, some dismiss the concept of pack behaviour based on comparison with modern birds. But, no bird would fill the niche of medium sized major ground carnivore which hunts prey larger than itself, generally. And since pack behaviour can be primarily instinctual, a large brain would not be an automatic indicator. Just a thought or five ^_^
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the only example of "excommunication"/ extreme ridicule I know of in paleontology are those clowns from oregon state university (Ruben et al.); you too would be severely ridiculed if you said that the feathers on sinosauropteryx's feather were from a bird under the fossil XD
or Archaeopteryx was a cold blooded animal. (wtf?)
or that Respiratory turbinals are the ONLY requirement for endothermy, etc.
"Gary..Gary, you fell out of the tree and landed on me...Gary?"
Rick the bird was too traumatised to push Gary's body off him and starved to death. It all makes sense
+1
Just my own, very uninformed opinion,.