Mar 20th 2018 by CivilizedPsycho • 13 Questions • 92 Points
I am part of an international team that studies Archaeopteryx with microtomography using synchrotron light. Archaeopteryx is a feathered dinosaur from the Late Jurassic of Bavaria in Germany. We just found out that the cross cuts of its wing bones look remarkably like those of modern birds and interpreted this as evidence for active flight. However, we also recalled that the skeleton of Archaeopteryx was not equipped with the advanced flight adaptations that all present-day flying birds share. Furthermore, the recent years have uncovered evidence for various previously unrecognised aerial strategies that were adopted by early bird-like dinosaurs. This led us to the conclusion that Archaeopteryx, which remains among the oldest of them, must have represented one of many such evolutionary experiments of dinosaurian flight that ultimately went extinct, leaving only the flight of living birds today. Tomography in general - and synchrotron microtomography in particular - continues to unlock new possibilities for non-destructive and three-dimensional visualisation of important fossils. This promises much for the future of studying the past!
EDIT: Thank you all very much for having joined me here to talk about Archaeopteryx! I will have to return to finishing my preparations for my defence later this week but hope to have sufficiently addressed your interesting questions!
Well i certainly didnt do anything that extreme but maybe this will fit.
1) i was about 9 or 10. I saw this older kid who i wasnt on the best of terms with, was sitting on a picnic bench so i went home and grabbed a hammer and some nails. Snuck up on him and nailed his hand to the bench, i then procedded to beat him with the hammer for a few more minutes and left.
2) too young to be charged at the time, i ended up on a few different medications and in therapy and some other stuff. I had a history of acting out violently like this for much of my childhood.
3) yes, though after a few whacks of the hammer i kinda blacked out.
4) #2 applies a fair bit to here i would say. Kinda hard to say though, the rest of my family had its share of problems and alot of my memory around this time "hazy" at best.
5) im doing alright these days. Though when i was in my early twenties i sold crack and stuff and later became a crackhead for a couple years.
Hi Dennis, I also like bones! I practice orthopedic surgery - many patients suffer degenerative conditions around their joints, but they differ in weight bearing and non-weight bearing joints (ie- knee vs. shoulder). Both get arthritis, but for different reasons. When deciding if a particular species could fly, do you look for degenerative bony sequela related to the stresses of attempted/achieved flight?
My first instinct was to respond "Jesus Christ" and then I realized how wrong that was.
Do you feel any regret from that incident? Did you make amends? Do you still feel violent?
Hello fellow bone enthusiast! Limb bones evolve to cope with the stresses and demands they are subjected to and can even remodel themselves to a certain degree during life, depending on how they are used. We did not find signs of degeneration but really aimed at interpreting these evolutionary and adaptive modifications in comparison with understood archosaurs to explain what they signify.