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Lecture 25 - Origin of Birds

2 Pages

Earth Sciences
Course Code
Earth Sciences 1083F/G
Cameron Tsujita

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Lecture 25The Origin of Birds y Discovery of feathered dinosaurs in Liaoning China excited many paleontologists who suspected a direct link between dinosaurs and birds o The fuzzy raptor o Dates back to the discovery of Archaeopteryx in the Upper Jurassic Solnhofen Limestone of Bavaria Germany y Solnhofen Limestone o Much of what is now Germany was covered by a warm shallow sea with reefs made up of sponges and corals o Isolated lagoons that were cut off from the rest of the sea o Lagoons too salty and had too little oxygen for anything more complex than bacteria or protists y Archaeopteryx First significant specimen o First fossil was a single feather found in 1860 o Showed asymmetric form that is characteristic of flight feathers in birds o Specimen found in 1861 The London Specimen established that type of bird which the feather probably belonged to o Best preserved specimen is the Berlin Specimen discovered in 1877Shows most of
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