ERTH 2104 Lecture Notes - Lecture 13: Feathered Dinosaur, Troodontidae, Oviraptoridae
14 Dec 2019
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Document Summary
Palate with a pair of median, tooth like projections. Found in solnhofen germany because of the great preservation conditions. Limestone was a great rock that made it easy to reveal fossils. Carcasses fall down and settle on the seafloor. Cover of very fine sediment preserved the fossils. Most feathered dinosaurs are known from early cretaceous china. Oldest bird not likely to have been the first warm-blooded. Small theropod with very long tail and short arms. First non-avialan with rectrices (tail fan feathers) . First non-avialan dinosaur with half a wing . Symmetrical feathers on the hand; tail fan also present. Long hindlimbs and teeth only in premaxilla only. Important group used to establish the link between dinosaurs and birds. Quill knobs, little holes where the feathers were inserted within the bone. Broad feathers suggested display either for courtship or defense. Extending out almost all in the same plane.
