04-dino-systematics

04-dino-systematics - 460:206 DINOSAURS Philosophies of...

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460:206 DINOSAURS Philosophies of Dinosaur Systematics
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China, 3000 years ago “Dragon’s teeth”
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180 years since first discovery William Buckland (1784-1856) Megalosaurus Britain, 1824
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Large, extinct reptiles Gidoen Mantel (1790-1852)- Iguanodon
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Richard Owen (1804-1892) Dinosauria “deinos” fearfully great “saurus” lizard
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“Dinosaurs as Reptiles” Concept “saurus” lizard
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Hadrosaurus “heavy lizard” Joseph Leidy (1823-1891)
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Hadrosaurus “heavy lizard” Reconstructed as biped (walking on two feet)
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DINOSAUR RUSH (1870 – 1900) Bias for large specimens
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Dinosaurs as “evolutionary failures”
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Dinosaurs as “slow, brutish, dim- witted”
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DINOSAUR RENAISSANCE The seventies John Ostrom Dinosaurs are ancestral to birds
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DINOSAUR RENAISSANCE The seventies Robert Bakker Dinosaurs are fast, agile, active
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MODERN CONCEPTS Dinosaurs show diversity
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Where do dinosaurs belong? LINNAEAN CLASSIFICATION
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Cladogram A B C D E
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Monophyly, Monophyletic group A B C D E
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Monophyly, Monophyletic group A B C D E All members have a single common ancestor
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Polyphyly, Polyphyletic group A B C D E
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Polyphyly, Polyphyletic group A B C D E Members are descended from different ancestors
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Holophyly, Holophyletic group A B C D E
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Holophyly, Holophyletic group A B C D E All members are descendants of a single common ancestor
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Paraphyly, Paraphyletic group A B C D E
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Paraphyly, Paraphyletic group A B C D E Some members are descendants of a single common ancestor
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LINNAEAN CLASSIFICATION
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This note was uploaded on 02/18/2011 for the course DINOSAURS 206 taught by Professor Neitzke during the Spring '11 term at Rutgers.

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04-dino-systematics - 460:206 DINOSAURS Philosophies of...

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