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Kosti Hadrosaura byly nacházeny nejčastěji v USA a Kanadě. Ilustrační foto | zdroj: Profimedia Nejnovější archeologické výzkumy z oblasti Aljašky podporují teorii o tom, že některé druhy dinosaurů byly schopné přežívat i v mnohem chladnějším klimatu, než se vědci domnívali. Právě na Aljašce byl objeven nový druh Hadrosaura (kachnozubého dinosaura), který žil v tomto nehostinném a chladném podnebí před 69 milióny lety. Zkamenělé kosti nalezené u aljašské řeky Colvil pocházejí od několika jedinců nového druhu Hadrosaura, který se zde vyskytoval před 69 milióny lety a to v chladném podnebí. Doposud se vědci domnívali, že Hadrosauři žili jen v oblastech, kde jsou tropické teploty a jejich ostatky nacházeli především v USA nebo Kanadě. ....
By Jim Shelton May 6, 2021 Share this with FacebookShare this with TwitterShare this with LinkedInShare this with EmailPrint this Hesperornis image provided by the Yale Peabody Museum of Natural History. (Photo: Robert Lorenz) If paleontologists had a wish list, it would almost certainly include insights into two particular phenomena: how dinosaurs interacted with each other and how they began to fly. The problem is, using fossils to deduce such behavior is a tricky business. But a new, Yale-led study offers a promising entry point the inner ear of an ancient reptile. According to the study, the shape of the inner ear offers reliable signs as to whether an animal soared gracefully through the air, flew only fitfully, walked on the ground, or sometimes went swimming. In some cases, the inner ear even indicates whether a species did its parenting by listening to the high-pitched cries of its babies. ....
Saving Mongolia s dinosaurs and inspiring the next generation of paleontologists by Thea Boodhoo Tuesday, February 7, 2017 Articulated dinosaur fossils can still be found at the Flaming Cliffs, and frequently are by tourists, guides, locals and poachers. Mongolian law instructs those who find such specimens to notify the area s single ranger, but no signage or leaflets exist to convey this. Even when a fossil is reported, Bayanzag Park has no resident paleontologist to excavate it, no prep lab to clean it, no collections facility to store it and no museum to display it. Credit: Thea Boodhoo. The bones were too yellow, too translucent, and the skeleton had no hands. I could tell the skeleton wasn’t a dinosaur, but the illusion was enough to bring my brain to a momentary halt. ....