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オーストラリアの恐竜 |
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☆クイーンズランド州 クイーンズランド州恐竜 クイーンズランドの恐竜達は自由に徘徊し、plesiosaursプレシオサウルス、
ichthyosaursイチトサウルスやpliosaursプリオサウルスなどの海竜は海を支配していました。 Queensland dinosaurs roamed the land, swimming reptiles such as plesiosaurs,
pliosaurs and ichthyosaurs dominated the seas. When first learning about prehistoric animals, it is sometimes easy to get confused about what exactly is and isn't a dinosaur. Quite simply, we talk about dinosaurs as being land-based creatures - they had four legs, and breathed air through lungs. Dinosaurs lived between 248 million and 65 million years ago. Also living in the same period were sea creatures such as the ichthyosaur, which could certainly be as large and ferocious as a dinosaur, but were not called dinosaurs. Queensland was also home to some prehistoric animals of the sky such as Pterosdaurs. ロートサウルス | ミンマイ(アンキロサウルス) | ウイントン足跡化石 | 新竜脚類 |エリオット | クーパー&ジョージ Australia Agrosaurus, Austrosaurus, Kronosaurus*, Minmi, Muttaburrasaurus, Platypterygius*, Rhoetosaurus, Woolungosaurus*, and trackways ______________________________________________________________________________________________________________________________ ☆西オーストラリア州 ストラマトライト Ozraptor, many trackways ☆ニューサウスウエールズ州 Australia Fulgurotherium ☆ビクトリア州 Australia Allosaurus, Atlascopcosaurus, Ausktribosphenos*, Fulgurotherium, Leaellynasauria, "Quantassasaurus", Timimus ☆南オーストラリア州 Kakuru
Australia ☆ニュース☆2008年6月19日 A Megaraptor-like theropod (Dinosauria: Tetanurae) in Australia: support for faunal exchange across eastern and western Gondwana in the Mid-Cretaceous The fossil record of Australian dinosaurs in general, and theropods in particular, is extremely sparse. Here we describe an ulna from the Early Cretaceous Eumeralla Formation of Australia that shares unique autapomorphies with the South American theropod Megaraptor. We also present evidence for the spinosauroid affinities of Megaraptor. This ulna represents the first Australian non-avian theropod with unquestionable affinities to taxa from other Gondwanan landmasses, suggesting faunal interchange between eastern and western Gondwana during the Mid-Cretaceous. This evidence counters claims of Laurasian affinities for Early Cretaceous Australian dinosaur faunas, and for the existence of a geographical or climatic barrier isolating Australia from the other Gondwanan continents during this time. The temporal and geographical distribution of Megaraptor and the Eumeralla ulna is also inconsistent with traditional palaeogeographic models for the fragmentation of Gondwana, but compatible with several alternative models positing connections between South America and Antarctica in the Mid-Cretaceous.
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