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Course: American Museum of Natural History > Unit 1
Lesson 2: How do scientists study dinosaurs?- Where in the world did dinosaurs live?
- Where in the world did dinosaurs live?
- Did dinosaurs travel in herds or packs?
- Did dinosaurs travel in herds or packs?
- How fast were dinosaurs?
- Were dinosaurs warm-blooded?
- Were dinosaurs warm-blooded?
- How fast did dinosaurs grow, and how long did they live?
- How fast did dinosaurs grow, and how long did they live?
- What was dinosaur skin like?
- What color were extinct dinosaurs?
- What color were extinct dinosaurs?
- What were the biggest and smallest dinosaurs?
- Did dinosaurs fight?
- How did dinosaurs reproduce?
- How intelligent were dinosaurs?
- New research points to dinosaurs' colorful past
- New dinosaur research: Microraptor's feather color revealed
- Quiz: How do scientists study dinosaurs?
- Exploration Questions: How do scientists study dinosaurs?
- Answers to Exploration Questions: How do scientists study dinosaurs?
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New dinosaur research: Microraptor's feather color revealed
A pigeon-sized, four-winged dinosaur known as Microraptor had black iridescent feathers when it roamed the Earth 130 million years ago, according to research led by a team of American and Chinese scientists that includes Museum researchers. The dinosaur’s fossilized plumage is the earliest record of iridescent feather color. Created by American Museum of Natural History.
Want to join the conversation?
- How do you get the exact age of the fossil?(5 votes)
- The age of the fossil is determined by the layer of earth from which it came. Just as a Arborist can tell the age of a tree by it's rings and when different things happened to it depending on where on the rings the event occurs, like a thin ring means drought, and a thick one means lots of water that year, and they can tell when these events were by their position in the rings. The earth is laid down in layers, and each layer represents a different time, just like with the rings on a tree the one closest to the surface is the current time, and the further in you go, the further back you travel in time. So by dating the layer they were found in you can determine the age of a fossil, just like you can say what the weather was like over the last several years looking at the rings of a tree. Hope this helps!(2 votes)
- How does carbon dating works?(1 vote)
- How are they so sure that it was that certain color(1 vote)
- How did they figure out what color the feathers were?(1 vote)
- They didn't. Rather, they made a theory and used some scientific evidence to guess that they had black feathers.(1 vote)
Video transcript
(Mark Norell) We have a paper coming out on
Science Week, and it's about the color and the feather configuration on a small, hundred
thirty million year old dinosaur call Microraptor from Northeastern China. What our new paper really shows is this phenomena
that we call "iridescence", which is a kind of both structural color as well as pigment
color that we see in modern birds like grackles and crows evolved long before those animals
did in non-avian dinosaurs. Now, whether this is a homologous, meaning
it was only one evolution, or it evolved several times, we don't really know. We do know that it evolved several times in
living birds, so that it may be just a parallel evolution of this feature. But what it really shows is that these animals
signaled visually, a lot like living birds do today. Whenever we see a great specimen like this
in a collection, we really try think to about what we can do with it that's outside the
ordinary, and this one had these beautiful feather impressions all over it, so one of
the first things we thought we would do would be to look at feather coloration because that's
something that's been the focus of a lot of different labs' work over the last couple
of years. But another one is really like, you know,
feather architecture, and the configuration of feathers across the body, because there's
been a lot of speculation on how the feathers were oriented in Microraptor and whether or
not these formed air foils or whether or not these had to do with something like sexual
selection and sexual display, so I think that we really nailed and we conclusively have
shown what color this animal was, it was dark-colored, and it was iridescent, we have also shown
the tail feathers are in a different configuration than previously have been thought, that instead
of being just a lollypop, single blade, there's actually two feathers that stick out pretty
far on the end of tail, and this is a common motif that one sees in both birds alive today
as well as fossil birds and now in non-avian dinosaurs that they have these almost peacock-tail
kind of things with long feathers sticking off the end of the tail that undoubtably are
used for display. The work is really the result of a highly
collaborative team of people spread across the planet, in China, in the United States,
and elsewhere, that we've really worked hard in putting this whole thing together to give
us a really new look of an animal that was pretty poorly known to us. (Mick Ellison) My role was to do the imaging
for the paper and that included taking photographs of the specimen and mapping out the skeleton
and ultimately doing a reconstruction, a drawing of the animal, how it may have appeared when
it was alive. If you saw it today, superficially, you may
think that you're looking at a crow-sized, or a pigeon-sized bird, but you'd instantly
know after that this is something very unusual. It's very exciting to feel like I maybe, somewhat
close to visualizing what this animal may have looked like. (Mark Norell) One of the things that really
drives me as a paleontologist is not really the answer, it's the process. And when we look at something like a dinosaur,
but has feathers on it, and it's preserved on a slab of rock, you know, one of the immediate
things you would think of is, "Wow, I wonder what color those feathers were." and just
as we were able to put together a team of people to be able to figure that out, is really
what keeps me going as a scientist, it's less of the answer, it's more of the process.