http___metro-portal.hr_najstariji-dinosaur-pronadjen-u-muzeju_75261_1.xml
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The oldest dinosaur EVA! has been discovered And is compared, by science, to being the size of a Labrador. Cats everywhere? Seethe with jealously. [via Physorg] Researchers have discovered what may be the earliest dinosaur, a creature the size of a Labrador retriever, but with a five foot-long tail, that walked the Earth about 10 million years before more familiar dinosaurs like the small, swift-footed Eoraptor and Herrerasaurus. The findings mean that the dinosaur lineage appeared 10 million to 15 million years earlier than fossils previously showed, originating in the Middle Triassic rather than in the Late Triassic period. “If the newly named Nyasasaurus parringtoni is not the earliest dinosaur, then it is the closest relative found so far,” according to Sterling Nesbitt, a University of Washington postdoctoral researcher in biology and lead author of a paper published online Dec. 5 in Biology Letters, a journal of the United Kingdom’s Royal Society. “For 150 years, people have been suggesting that there should be Middle Triassic dinosaurs, but all the evidence is ambiguous,” he said. “Some scientists used fossilized footprints, but we now know that other animals from that time have a very similar foot. Other scientists pointed to a single dinosaur-like characteristic in a single bone, but that can be misleading because some characteristics evolved in a number of reptile groups and are not a result of a shared ancestry.” The researchers had one humerus – or upper arm bone – and six vertebrae to work with. They determined that the animal likely stood upright, measured 7 to 10 feet in length (2 to 3 meters), was as tall as 3 feet at the hip (1 meter) and may have weighed between 45 and 135 pounds (20 to 60 kilograms). The fossilized bones were collected in the 1930s from Tanzania, but it may not be correct to say dinosaurs originated in that country. When Nyasasaurus parringtoni lived, the world’s continents were joined in the landmass called Pangaea. Tanzania would have been part of Southern Pangaea that included Africa, South America, Antarctica and Australia. “The new findings place the early evolution of dinosaurs and dinosaur-like reptiles firmly in the southern continents,” said co-author Paul Barrett at the Natural History Museum, London. …[Read More] And the fact that cats are indeed seething with jealously? Make me wonder if they might have had their nefarious little paws in THIS (below) deal. Cause you see, for some odd reason… Big Sis is now seizing dinosaur skeletons. [via InvestmentWatchBlog] Big Sis Seizes Dinosaur Skeleton NEW YORK – A New York judge’s approval has cleared the way for a dinosaur skeleton held by an auction house to be moved to U.S. control on Friday. Authorities said Wednesday the skeleton will be carefully transferred in boxes so no damage is done to the 70 million-year-old bones. Department of Homeland Security spokesman Luis Martinez says the skeleton will be moved to a government warehouse. He says the government cannot disclose the name or address of the storage site because other priceless antiquities are there. Read more: http://www.myfoxdc.com/story/18843715/us-takes-control-of-dinosaur-skeleton-in-ny-friday#ixzz1yQvkS6Zl …[Read More] Mere coincidence, my friends? Oh, no…
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Najstariji dinosaur pronađen u muzeju Fosil se nalazi na policama londonskog Prirodoslovnog muzeja desetljećima, a tek sada je prepoznat kao ostatak pradavnog dinosaura Ponekad za velika otkrića ne trebate napraviti ništa pametnije od brisanja prašine na policama, pokazalo se u londonskom Prirodoslovnom muzeju. Naime, jedan od fosila koji doslovno skuplja prašinu na policama već desetljećima nije bio ono što se misli, nego ostaci najstarijeg dinosaura na Zemlji. Prema novom istraživanju, radi se o ostacima dinosaura Nyasasaurus parringtoni koji je živio prije 245 milijuna godina, između 10 i 15 milijuna godina prije najstarijih do sada poznatih dinosaura. Dinosaur je ime dobio po po jezeru Nyasa u Africi, danas jezeru Malawi, i Rexu Parringtonu sa sveučilišta Cambridge koji je uzorak našao blizu jezera tridesetih godina prošlog stoljeća. Radi se o dinosauru koji je bio velik otprilike kao labrador, a ostatke su zadnji puta proučavali pedesetih godina prošlog stoljeća. Stvorenje je bilo otprilike veličine labradora i nazvano je . "To je bio slučaj gledanja materijala novim očima", rekao je agenciji Reuters Paul Barrett iz Prirodoslovnog muzeja, koji je radio na studiji. "To zatvara rupu u dokumentaciji fosila i gura dalje postojanje dinosaura". Londonski fosil istraživači su proučavali pedesetih godina 20. stoljeća ali nisu došli do nikakvog zaključka te ništa nije ni objavljeno, rekao je Barrett. "Nitko nije znao što je to ... bila je to mitska životinja" Dva obilježja londonskog fosila, zajedno sa sličnim uzorkom uočenim u muzeju u južnoafričkom Cape Townu, snažan su dokaz da je životinja pripadala dinosaurima, rekli su istraživači. Struktura kostiju gornjih udova pokazuje znakove brzog rasta, uobičajenog kod dinosaura, a ostaci također imaju i obilježje poznato kao produženi deltopektoralni greben na koji se vežu mišići gornjih udova, osobina jedinstvena za dinosaure. "Iako Nyasasaurusa znamo samo po fosilnim fragmentima, anatomija gornjih udova i kukova ima obilježja jedinstvena za dinosaure, što nas uvjerava da imamo posla sa životinjom vrlo bliskom porijeklu dinosaura", rekao je Barrett. Znanstvenici vjeruju da je Nyasasaurus stajao uspravno, bio metar visok u kukovima, dva do tri metra dug od glave do kraja repa i težio 20 do 60 kilograma. Kada je živio Nyasasaurus kontinenti su bili spojeni u golemu kopnenu masu zvanu Pangea a dio područja u Tanzaniji gdje su nađeni fosili bili bi dio južne Pangee koja je uključivala Afriku, Južnu Ameriku, Antarktiku i Australiju. Teoretičari su dugo tvrdili da je trebalo biti dinosaura koji su hodali Zemljom sredinom razdoblja Trijasa koje je završilo prije oko 237 milijuna godina ali su do sada dokazi bili dvojbeni, rekao je Streling Nesbitt sa sveučilišta države Washington u Seattleu, koji je vodio studiju objavljenu u časopisu Biology Letters. "Ako novootkriveni Nyasasaurus parringtoni nije najraniji dinosaur onda mu je najbliži rođak do sada nađen", rekao je Nesbitt. "Ono što je stvarno zgodno kod uzorka je da ima mnogo povijesti. Nađen tridesetih, prvi put opisan pedesetih... Sada, 80 godina kasnije, sve to zbrajamo". Znanstvenici planiraju dodatna terenska istraživanja u Tanzaniji kako bi našli još fosila i dobili bolju sliku anatomije Nyasasaurusa.