Science Daily: Color of Dinosaur Feathers Identified.
ScienceDaily (Jan. 28, 2010) — The colour of some feathers on dinosaurs and early birds has been identified for the first time, reports a paper recently published in Nature.
The research found that the theropod dinosaur Sinosauropteryx had simple bristles -- precursors of feathers -- in alternate orange and white rings down its tail, and that the early bird Confuciusornis had patches of white, black and orange-brown colouring. Future work will allow precise mapping of colours and patterns across the whole bird.
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7 comments:
So, Oils, I take it you understand that Archesaurs evolved into birds? Good for you!
Jeffery,
The babies of velociraptors are velociraptors.
Velociraptors never magically and miraculoulsy evolved wings and flew off into the sunset.
No, they didn't.
Nobody ever said that. The species you want to say is Eoraptor.
I suppose you just choose to remain ignorant. Good for you!
OIM,
These are a summary of the concepts you need to know by the time this unit is finished
• Explain Wegener’s hypothesis of continental drift
• List evidence that supports the theory of continental drift
• Summarize the theory of plate tectonics
• Compare the characteristic geologic activities that occur along divergent, convergent & transform boundaries
• Explain the possible role of convection currents and plate movement and "slab pull"
• Predict isostatic adjustments (isostasy) that will result from changes in the thickness of the earth’s crust
• Describe the process of ocean-floor spreading and the main geologic features involved
• Compare folding and faulting as responses to stress in crustal rock
• Explain why earthquakes generally occur at plate boundaries
• Compare three types of seismic waves—P, S, and L-waves.
• Apply the triangulation method used to pinpoint an earthquake
• Determine the magnitude of earthquakes based on seismic data
• Describe the possible effects of various strength earthquakes
• Describe the formation and movement of magma
• Define volcanism and three locations where it likely occurs
• Summarize the relationship between lava types and the force of volcanic eruptions
• Identify and describe the three types of volcanic cones
• Summarize the events that may signal a volcanic eruption
For answers read: http://teacher2.smithtown.k12.ny.us/sgessler/continentaldrift.htm
and go to this for the pic... http://teacher2.smithtown.k12.ny.us/sgessler/
Finally some concrete evidence for Dinosaur display structures!! :) I KNEW they were for display in some species, but, I'm afraid there's more to it than that. My theory- Feathers evolved as display structures, insulation, and, in the case of the Microraptor, gliding. Very Cool!
OiM- The commonly referred to "bird-dino theory," (of course, the name doesn't do them all justice.) could be labeled as fact. SO much evidence supports it that one can NOT debunk the theory easily. It just gets revised when evidence seems to contradict it.
The same applies to Darwinian Evolution.
KV-
I am astonished at how ignorant you are!! You blindly follow main-stream "science?!"
Holy Cretaceous! Clearly, you make a HORRIBLE scientist. Why? YOu don't know how to QUESTION others' judgment and back it up with your OWN opinions and hypotheses! I do!!
You really need to leave and not return until you can argue intelligently on ANYTHING!!
Mr. Keown-
You misspelled the group name. "Archesaurs" SHOULD be "Archosaurs."
Mr. Keown- Another thing, that conjecture is inaccurate. You forget about the Crocodylians still living today and turtles. Birds are considered by some to be "Theropoda." Therefore, they are, in a way, "Archosauria."
OiM- What makes you doubt Evolutionary theory?
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